transmission fluid ISUZU KB P190 2007 Workshop Owner's Guide

Automatic Transmission – 4L60E – General Information Page 7C1–24
J39855-1
Stator Shaft Seal Expander
Used to expand the stator shaft seal
prior to installation.
Previously released Unique
J39855-2
Stator Shaft Seal Resizer
Used to re-size the stator shaft seal
after installation.
Previously released Unique
J41510
T50 Torx Plus



Bit
Used to loosen and tighten the torque
converter housing to transmission
case bolts.
Also released as 6194.
Previously released Unique
J41778-1
Oil Pump Bush Installer
Used with a bench press.
Previously released Unique
J41778-2
Support Plate
Used to support the oil pump during
bush installation.
Previously released Unique
J42628
Plate
Used with clutch spring compressor,
J23327-1.
Previously released Unique
16296 12 Volt Black Light
Used with special, fluorescent dyes
for tracing a variety of fluid leaks.
Also previously released as J42220 Desirable
70000861
Tech 2 Diagnostic Tool

Previously released Mandatory
J21867
Pressure Gauge And Hose
Assembly

Previously released Mandatory

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ISUZU KB P190 2007

Automatic Transmission – 4L60E – General Information Page 7C1–25
J28431-B
Fluorescent Oil Dye
Supplied in packs of 24, 1 oz bottles.
Suitable for black light tracing of
engine, transmission and power
steering fluid leaks.
Previously released Desirable
AU525
AU525 Quick-Connect Release Tool
This tool is used on all engines with
automatic transmission.
Previously released Mandatory
AU583 Selector Shaft Seal Remover/
Installer
Use to remove and install the manual
shaft oil seal, with the transmission
installed in the vehicle.
Previously released Unique
J25025-B
Dial Indicator Stand and
Guide Pin Set
Used for the guide pins for aligning
the control valve body spacer plate.
Previously released Unique
J41623-B
Cooler Line Disconnect Tool
Used to disconnect cooler lines at the
transmission end, Quick-Connects.
Previously released Mandatory
7380
(J25765-A)
Pre-load gauge
(3/8” drive)
Used in several applications. In 7C5 it
is used in conjunction with J33037 to
measure selective apply pin length.
(0-17 Nm.)
Previously released Mandatory
E308
(56750)
(49V012001)
Seal Remover
Used as a universal seal remover .

Previously released Available
J35616-C

Electronic Kit
Used in conjunction with a multimeter
for measuring voltages and
resistances without damaging wiring
harness connectors.
Previously released Desirable

J44152
Jumper Harness
Used for checking automatic
transmission during diagnostic
checks.
Previously released Mandatory


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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–2
4 Diagnostics ...........................................................................................................................................27
4.1 Introduction ................................................................................................................... ....................................... 27
4.2 Basic Knowledge Required ....................................................................................................... .......................... 27
4.3 Diagnostic Precautions ....................................................................................................................................... 27
4.4 Preliminary Checks.............................................................................................................................................. 28
4.5 Diagnostic Trouble Code Tables ................................................................................................. ....................... 29
Multiple DTCs Fault Condition ............................................................................................................................ 29
4.6 Diagnostic Trouble Code Definitions ............................................................................................ ..................... 29
Type A – Emission Related DTCs ....................................................................................................................... 29
Type B – Emission Related DTCs ....................................................................................................................... 30
Conditions for Clearing Type A or Type B DTCs .................................................................................. ............ 30
Type C – Non-emission Related DTCs ............................................................................................................... 30
Conditions for Clearing Type C DTCs .............................................................................................................. 30
Current DTCs........................................................................................................................................................ 30
History DTCs ........................................................................................................................................................ 30
4.7 Diagnostic System Check ........................................................................................................ ........................... 30
Description ........................................................................................................................................................... 30
Test Description ................................................................................................................................................... 31
4.8 Diagnostic Trouble Code List ................................................................................................... .......................... 31
4.9 DTC P0218 – Transmission Fluid Overtemperature................................................................................. ......... 33
DTC Description ................................................................................................................................................... 33
Circuit Description ............................................................................................................................................... 33
Conditions for Running the DTC ................................................................................................. ....................... 33
Conditions for Setting the DTC........................................................................................................................... 33
Action Taken When the DTC Sets ................................................................................................. ..................... 33
Conditions for Clearing the DTC ........................................................................................................................ 34
Diagnostic Aids .................................................................................................................................................... 34
Test Description ................................................................................................................................................... 34
DTC P0218 Diagnostic Table..................................................................................................... .......................... 34
4.10 DTC P0562 – System Voltage Low ................................................................................................. .................... 35
DTC Description ................................................................................................................................................... 35
Circuit Description ............................................................................................................................................... 35
Conditions for Running the DTC ................................................................................................. ....................... 36
Conditions for Setting the DTC........................................................................................................................... 36
Action Taken When the DTC Sets ................................................................................................. ..................... 36
Conditions for Clearing the DTC ........................................................................................................................ 36
Diagnostic Aids .................................................................................................................................................... 36
Test Description ................................................................................................................................................... 36
DTC P0562 Diagnostic Table..................................................................................................... .......................... 36
4.11 DTC P0563 – System Voltage High................................................................................................ ..................... 38
DTC Description ................................................................................................................................................... 38
Circuit Description ............................................................................................................................................... 38
Conditions for Running the DTC ................................................................................................. ....................... 38
Conditions for Setting the DTC........................................................................................................................... 39
Action Taken When the DTC Sets ................................................................................................. ..................... 39
Conditions for Clearing the DTC ........................................................................................................................ 39
Diagnostic Aids .................................................................................................................................................... 39
Test Description ................................................................................................................................................... 39
DTC P0563 Diagnostic Table..................................................................................................... .......................... 39
4.12 DTC P0601 to P0604 or P1621 – TCM Malfunction .................................................................................. .......... 41
DTC Description ................................................................................................................................................... 41
Circuit Description ............................................................................................................................................... 41
Conditions for Running the DTC ................................................................................................. ....................... 41
Conditions for Setting the DTC........................................................................................................................... 41
Action Taken When the DTC Sets ................................................................................................. ..................... 42
Conditions for Clearing the DTC ........................................................................................................................ 42
Test Description ................................................................................................................................................... 42
DTC P0601 to P0604 or P1621 Diagnostic Table ................................................................................... ............ 42
4.13 DTC P0711 to P0713 – Transmission Fluid Temperature Sensor .................................................................... 4 3
DTC Description ................................................................................................................................................... 43

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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–6
DTC Description ................................................................................................................................................. 100
Circuit Description ............................................................................................................................................. 100
Conditions for Running the DTC ................................................................................................. ..................... 101
Conditions for Setting the DTC......................................................................................................................... 101
Action Taken When the DTC Sets ................................................................................................. ................... 101
Conditions for Clearing the DTC ...................................................................................................................... 101
Test Description ................................................................................................................................................. 101
DTC P0977 Diagnostic Table..................................................................................................... ........................ 101
4.32 DTC P1810, P1815 and P1816 – Transmission Fluid Pressure Position Switch........................................... 103
DTC Description ................................................................................................................................................. 103
Circuit Description ............................................................................................................................................. 103
Conditions for Running the DTC ................................................................................................. ..................... 104
DTC P1810 .................................................................................................................................................... 104
DTC P1815 .................................................................................................................................................... 104
DTC P1816 .................................................................................................................................................... 104
Conditions for Setting the DTC................................................................................................. ........................ 104
DTC P1810 .................................................................................................................................................... 104
DTC P1815 .................................................................................................................................................... 104
DTC P1816 .................................................................................................................................................... 104
Action Taken When the DTC Sets ................................................................................................. ................... 104
Conditions for Clearing the DTC ...................................................................................................................... 105
Diagnostic Aids .................................................................................................................................................. 105
Test Description ................................................................................................................................................. 105
DTC P1810, P1815 and P1816 Diagnostic Table.................................................................................... .......... 105
4.33 DTC P2763 – Torque Converter Clutch Pressure Control Solenoid Control Circuit High Voltage ............. 108
DTC Description ................................................................................................................................................. 108
Circuit Description ............................................................................................................................................. 108
Conditions for Running the DTC ................................................................................................. ..................... 108
Conditions for Setting the DTC......................................................................................................................... 108
Action Taken When the DTC Sets ................................................................................................. ................... 108
Conditions for Clearing the DTC ...................................................................................................................... 108
Test Description ................................................................................................................................................. 109
DTC P2763 Diagnostic Table..................................................................................................... ........................ 109
4.34 DTC P2764 – Torque Converter Clutch Pressure Control Solenoid Control Circuit Low Voltage .............. 111
DTC Description ................................................................................................................................................. 111
Circuit Description ............................................................................................................................................. 111
Conditions for Running the DTC ................................................................................................. ..................... 111
Conditions for Setting the DTC......................................................................................................................... 111
Action Taken When the DTC Sets ................................................................................................. ................... 111
Conditions for Clearing the DTC ...................................................................................................................... 111
Test Description ................................................................................................................................................. 112
DTC P2764 Diagnostic Table..................................................................................................... ........................ 112
4.35 DTC P2769 – Torque Converter Clutch Enable Solenoid Control Circuit Low Voltage ............................... 115
DTC Description ................................................................................................................................................. 115
Circuit Description ............................................................................................................................................. 115
Conditions for Running the DTC ................................................................................................. ..................... 115
Conditions for Setting the DTC......................................................................................................................... 115
Action Taken When the DTC Sets ................................................................................................. ................... 115
Conditions for Clearing the DTC ...................................................................................................................... 116
Diagnostic Aids .................................................................................................................................................. 116
Test Description ................................................................................................................................................. 116
DTC P2769 Diagnostic Table..................................................................................................... ........................ 116
4.36 DTC P2770 – Torque Converter Clutch Enable Solenoid Control Circuit High Voltage............................... 119
DTC Description ................................................................................................................................................. 119
Circuit Description ............................................................................................................................................. 119
Conditions for Running the DTC ................................................................................................. ..................... 119
Conditions for Setting the DTC......................................................................................................................... 119
Action Taken When the DTC Sets ................................................................................................. ................... 120
Conditions for Clearing the DTC ...................................................................................................................... 120
Test Description ................................................................................................................................................. 120

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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–7
DTC P2770 Diagnostic Table............................................................................................................................. 120
4.37 DTC U0073 and U0100 – CAN-Bus No Communication With ECM (Engine Control Module)...................... 121
DTC Description ................................................................................................................................................. 121
Circuit Description ............................................................................................................................................. 121
Conditions for Running the DTC ................................................................................................. ..................... 121
Conditions for Setting the DTC......................................................................................................................... 121
DTC U0073 .................................................................................................................................................... 121
DTC U0100 .................................................................................................................................................... 121
Action Taken When the DTC Sets ................................................................................................. ................... 122
Conditions for Clearing the DTC ...................................................................................................................... 122
Test Description ................................................................................................................................................. 122
DTC P0864 and U0101 Diagnostic Table........................................................................................... ............... 122
5 Electrical Specifications ....................................................................................................................124
5.1 Transmission Fluid Temperature (TFT) Sensor Specifications ..................................................................... 124
5.2 Range Reference................................................................................................................................................ 124
5.3 Transmission Fluid Pressure Manual Valve Position Switch Logic .............................................................. 125
5.4 Transmission Range Switch Logic................................................................................................................... 125
5.5 Component Resistance ..................................................................................................................................... 126
5.6 Shift Solenoid Valve State and Gear Ratio ...................................................................................................... 126
5.7 Line Pressure ..................................................................................................................................................... 126
6 Special Tools ......................................................................................................................................127



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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–8
1 General Information
1.1 Introduction
This Section covers the electrical diagnostic for the 4L60E automatic transmission when mated to a V6 engine.
1.2 General Description
The 4L60E automatic transmission incorporates electronic controls that utilise a transmission control module (TCM) to
control shift points through:
• the 1-2 and 2-3 shift solenoid valves,
• the 3-2 downshift solenoid valve,
• a torque converter clutch (TCC) solenoid valve,
• apply and release through the TCC pulse width modulated (PW M) solenoid valve, and
• line pressure through the pressure control (PC) solenoid valve.
Electrical signals from various sensors provide information to the TCM about the following:
• vehicle speed,
• throttle position,
• engine coolant temperature,
• transmission fluid temperature,
• gear range selector position,
• engine speed,
• converter turbine speed, and
• engine load braking and operating mode.
The TCM uses this information to determine the precise moment to upshift or downshift, apply or release the TCC and
what fluid pressure is needed to apply the clutches. This type of control provides consistent and precise shift points and
shift quality based on the operating conditions of the vehicle.
Figure 7C2 – 1 shows the location of the internal electronic components in the transmission.

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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–9

Figure 7C2 – 1
Legend
1 Vehicle Speed Sensor 5 Torque Converter Clutch Pulse Width Modulation (TCC
PWM) Solenoid Valve
2 1-2 Shift Solenoid (Solenoid A) and 2-3 Shift Solenoid (Solenoid B) 6 Torque Converter Clutch (TCC) Solenoid Valve
3
Automatic Transmission Fluid Pressure (TFP) Manual Valve
Position 7 Pressure Control (PC) Solenoid Valve
4 3-2 Downshift Solenoid
Transmission Adaptive Functions
The 4L60E automatic transmission uses a line pressure control system, which has the ability to adapt the system line
pressure to compensate for normal wear within the transmission, such as the clutch pack fibre plates, seals, springs, etc.
The adapt feature is similar in function to the long term/short term fuel trim feature of the engine management system.
The 4L60E automatic transmission uses the adapt function for garage shifts, upshifts and torque converter clutch (TCC)
application. The TCM monitors the engine torque to determine if the shift is occurring too fast or too slow and adjusts the
pressure control solenoid to maintain the correct shift feel.

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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–11

Figure 7C2 – 2
The TCM is an electronic control module receiving input or providing output to control the operation of the 4L60E
automatic transmission.
The TCM receives the following inputs from the engine control module (ECM):
• engine speed and torque values,
• engine intake air temperature (IAT), accelerator pedal position (APP) information,
• engine coolant temperature (ECT),
• driver selected shift mode, and
• air-conditioning (A/C) status.
The ECM provides this data to the TCM through the databus.
Other TCM inputs are:
• battery and ignition voltage,
• brake switch status,
• transmission fluid temperature (TFT), and
vehicle speed sensor (VSS).
The TCM provides the following outputs to control the automatic transmission:
• shift solenoids to control transmission shifting,
• torque converter clutch (TCC) pulse width modulated (PW M) solenoid operation to control the apply and release of
the torque converter clutch assembly, and
• pressure control (PC) solenoid to regulate the transmission line pressure.
Other TCM outputs provided to the ECM / PIM are:
• MIL illumination request,
• vehicle speed,

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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–12
• transmission fluid temperature,
• commanded gear status,
• TCC status, and
• torque reduction requests.

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Automatic Transmission – 4L60E – Electrical Diagnosis Page 7C2–16
Programming
If Programming is selected, a selection list is displayed which contains:
• Reset TAP Cells – This test allows the user to reset the Transmission Adapt (TAP) cells by pressing the Reset soft
key.
NOTE
Upon resetting the TAP cells the TCM loses all
learnt adaptive functions. When the vehicle is first
driven after this, the shifts may be harsh. This
harshness will ease as the TCM relearns the TAP
cells.
3.2 Data Display
If Data Display is selected, a selection list is displayed which contains the following:
Transmission Data
Once this mode, a list of transmission components and the TCM inputs are displayed along with their status.
Transmission Data Parameters
For definitions of the parameters in this table, refer to 3.3 Tech 2 Data Definitions.
Tech 2 Parameter Units Displayed Typical Data Value
Engine Torque Nm Varies
Throttle Position Percent Varies
Engine Speed RPM Varies
AT Input Speed N/A N/A
AT Output Speed RPM Varies
Vehicle Speed km/h 0
Commanded Gear 1,2,3,4 1
Shift Solenoid A On / Off Varies
Shift Solenoid B On / Off Varies
3-2 Downshift Solenoid On/Off On
Estimated Gear Ratio Ratio 8.00:1
Speed Ratio Ratio 8.00:1
Torque Converter Efficiency Ratio .00:1
TFP Switch A Open 12 V / Closed 0 V Varies
TFP Switch B Open 12 V / Closed 0 V Varies
TFP Switch C Open 12 V / Closed 0 V Varies
Engine Coolant Temperature °C Varies
Transmission Fluid Temp °C Varies
Transmission Hot Mode On/Off Off
PCS Actual Current Amps Varies (0.1 – 1.1 A)
PCS Desired Current Amps Varies (0.1 – 1.1 A)
PCS Duty Cycle Percent Varies

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