trans ISUZU KB P190 2007 Workshop Owners Manual

6B-14 ENGINE COOLING (4JK1/4JJ1)
Removal
1. Disconnect battery ground cable.
2. Loosen a drain plug to drain EC.
3. Disconnect oil cooler hose on automatic transmission (A/T).
4. Remove the engine cover.
5. Disconnect radiator inlet hose and outlet hose from the engine.




RTW 56BSH000301
6. Remove fan guide (1), clips (2) on both sides and
the bottom lock, then remove lower fan guide (3)
with fan shroud (4).



PTW 46BSH000101

Legend
1. Fan Guide
2. Clips
3. Lower Fan Guide
4. Fan Shroud

7. Disconnect the reserve tank hose (1) from
radiator.
8. Remove bracket (9).




RTW 76BMH000101
Legend
1. Reserve Tank Hose
2. Reserve Tank
3. Radiator Hose
4. Fan Guide; Lower
5. Fan Guide
6. Radiator Assembly
7. Drain Plug
8. Radiator Cap
9. Bracket

9. Lift up and remove the radiator assembly with
hose, taking care not to damage the radiator core
with a fan blade.

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

6B-16 ENGINE COOLING (4JK1/4JJ1)
Installation
1. Install radiator assembly (6) with hose, taking care
not to damage the radiator core with a fan blade.
2. Support the radiator upper tank with the bracket (9) and secure the radiator.
3. Connect reserve tank hose (1).
4. Install lower fan guide (4).
5. Connect radiator inlet hose and outlet hose (3) to the engine.
6. Install the engine cover.
7. Connect oil cooler hose to automatic transmission.
8. Connect battery ground cable.



RTW 76BMH000101
Legend
1. Reserve Tank Hose
2. Reserve Tank
3. Radiator Hose
4. Fan Guide; Lower
5. Fan Guide
6. Radiator Assembly
7. Drain Plug
8. Radiator Cap
9. Bracket


9. Pour engine coolant up to filler neck of radiator,
and up to MAX mark of reserve tank.
Important operation (in case of 100% engine coolant change) procedure for filling with engine
coolant.







RTW 76BSH000101
Engine coolant change
Refer to change procedure for Draining and Refilling
Cooling System in this section.

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

6E-6 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
P0501 25 AAA Vehicle Speed Sensor Circuit Range/ Performance
P0512 417 C -- Starter Request Circuit
P0562 35 C AA System Voltage Low
P0563 35 C AA System Voltage High
P0565 515 D D- Cruise Control On Signal
P0566 516 D D- Cruise Control Off Signal
P0567 517 D D- Cruise Control Resume Signal
P0568 518 D D- Cruise Control Set Signal
P0571 26 D D- Brake Switch Circuit
P0601 53 C AA Internal Control Module Memory Check Sum Error
P0602 154 C AA Control Module Programming Error
P0604 153 C AA Internal Control Module RAM Error
P0606 51 C AA ECM Processor
P0615 19 C -- Starter Relay Circuit
P0633 176 C AA Immobilizer Not Programmed
P0638 61 A AA Throttle Actuator Control Range/ Performance
P0642 55 C AA Sensor Reference Voltage 1 Circuit Low
P0643 55 C AA Sensor Reference Voltage 1 Circuit High
P0650 77 A AA Malfunction Indicator Lamp (MIL) Control Circuit
P0652 56 A AA Sensor Reference Voltage 2 Circuit Low
P0653 56 A AA Sensor Reference Voltage 2 Circuit High
P0661 58 C AA Intake Manifold Turning Valve Control Circuit Low
P0662 58 C AA Intake Manifold Turning Valve Control Circuit High
P0698 57 A AA Sensor Reference Voltage 3 Circuit Low
P0699 57 A AA Sensor Reference Voltage 3 Circuit High
P0700 185 A A- Transmission Control System (MIL Request)
P1064 247 A AA Fuel Pressure Regulator Control Circuit
P1065 247 A AA Fuel Pressure Regulator Control Circuit
P1093 227 A AA Fuel Rail Pressure Too Low
P1094 226 A AAFuel Rail Pressure Too Low (FRP Regulator
Commanded High)
P1094 226 C AA Fuel Rail Pressure Too Low (Fuel Pressure Drop)
P1196 461 A AA Intake Throttle Solenoid Control Driver
P1197 461 A AA Intake Throttle Solenoid Control Driver
P1198 461 A AA Intake Throttle Solenoid Control Driver
P124B 157 C AA Injector Circuit Short Across Group 1 & 2
P1261 34 A AA Injector Positive Voltage Control Circuit Group 1
P1261 34 A AAInjector Positive Voltage Control Circuit (Supply Voltage
Low)
DTC
Flash
Code DTC Type
DTC Descriptor
Euro 4
Specification Except Euro 4
Specification
(High Output) Except Euro 4
Specification (Standard Output)

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-25
Transmission Range Switch and Neutral Switch
RTW76EXF005001
E-51
H-5
E-51
Transmission
range
switch
3
2
8 NP
X-16
X-16 C-94 C-95
TCM
Diode
4
2
3 0.75
WHT
0.5
RED/
BLK
0.5
RED/
BLK
0.5
RED/
BLK 0.5
YEL/
VIO
0.5
YEL/
VIO
0.5
YEL/
VIO 0.5
YEL/
VIO 0.5
RED/
BLK
0.5
RED/
GRN
9
2
10
2 Neutral
switch
M/T
Standard output
A/T
0.5
BLK/
WHT Reverse
lamp
switch
0.5
BLK/
WHT
0.85
WHT
0.85
WHT
0.75
WHT
1 E-11
13 H-4 1 E-12 0.85
WHT
3 H-4
3 H-4 E-51
H-5
E-51
Transmission
range
switch
4
5
6 NP
X-16
X-16 C-95
TCM
Diode
4
2
3 0.75
WHT
0.5
RED/
BLK
0.5
RED/
BLK
0.5
RED/
BLK 0.5
YEL/
VIO
0.5
YEL/
VIO
0.5
YEL/
VIO 0.5
YEL/
VIO 0.5
RED/
BLK
0.5
RED/
GRN
9
2
8
20 Neutral
switch
M/T
High output
A/T
0.5
BLK/
WHT
0.5
BLK/
WHT
0.85
WHT
0.75
WHT
2 E-111
13 H-4 1 E-111
C-10
Back up
15A
Fuse/
relay
box
(Cabin)
3 C-58 ECM
PorN
range/
Neutral
switch
signal

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-45
Diagnostic System Check - Engine Controls
Description
The Diagnostic System Check - Engine Controls is an
organized approach to identifying a condition that is
created by a malfunction in the electronic engine
control system. The Diagnostic System Check must be
the starting point for any driveability concern. The
Diagnostic System Check directs the service technician
to the next logical step in order to diagnose the
concern. Understanding and correctly using the
diagnostic table reduces diagnostic time, and prevents
the replacement of good parts.
Test Description
The numbers below refer to the step numbers on the
diagnostic table.
2. Lack of communication may be because of a partial
or a total malfunction of the serial data circuit.
7. The presence of DTCs which begin with U, indicate
that some other module is not communicating.
10. If there are other modules with DTCs set, refer to
the DTC list. The DTC list directs you to the appropriate
diagnostic procedure. If the control module stores
multiple DTCs, diagnose the DTCs in the following
order:
• Component level DTCs, such as sensor DTCs, solenoid DTCs, actuator DTCs, and relay DTCs.
Diagnose the multiple DTCs within this category in
numerical order. Begin with the lowest numbered
DTC, unless the diagnostic table directs you
otherwise. Diagnostic System Check Engine Controls
Important:
• DO NOT perform this diagnostic if there is not a driveability concern, unless another procedure
directs you to this diagnostic.
• Before you proceed with diagnosis, search for applicable service bulletins.
• Unless a diagnostic procedure instructs you, DO NOT clear the DTCs.
• If there is a condition with the starting system, refer to the starting system section in the engine
mechanical.
• Ensure the battery has a full charge.
• Ensure the battery cables (+) (-) are clean and tight.
• Ensure the ECM grounds are clean, tight, and in the correct location.
• Ensure the ECM harness connectors are clean and correctly connected. DO NOT attempt to
crank the engine with ECM harness connectors
disconnect.
• Ensure the ECM terminals are clean and correctly mating.
• Ensure the fuel injector ID code data is correctly programmed in to the ECM.
• Ensure the immobilizer security information is correctly programmed into the ECM and
immobilizer control unit (ICU).
• If there are fuel system DTC’s (P0087, P0088, P0089, P0093, P1093 or P1094), diagnose sensor
DTCs, solenoid DTCs, actuator DTCs and relay
DTCs first.
Diagnostic System Check - Engine Controls
Step Action Value(s)Yes No
1 Install a scan tool.
Does the scan tool turn ON? —
Go to Step 2 Go to Scan Tool
Does Not Power Up
2 1. Turn ON the ignition, with the engine OFF.
2. Attempt to establish communication with the listed control modules.
•ECM
• Immobilizer control unit (ICU) (If so equipped)
• Transmission control module (TCM) (AISIN A/T only)
Does the scan tool communicate with all the listed
control modules? —
Go to Step 3 Go to Scan Tool
Does Not
Communicate with CAN Device

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

6E-46 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
3Notice:
If an immobilizer system is active the ECM
will disable the fuel injection causing the engine to
stall immediately after starting and energize the
starter cut relay to disable cranking.
Attempt to crank the engine.
Does the engine crank? —
Go to Step 4 Go to Step 5
4 Attempt to start the engine.
Does the engine start and idle? —
Go to Step 6 Go to Engine
Cranks but Does
Not Run
5 Does the scan tool display ECM DTCs P0615,
P0633, P161B or U0167?
—
Go to Applicable DTC Problem is relating
to starting system. Refer to the
applicable
diagnostic chart in starting system
6 Select the DTC display function for the following
control modules: •ECM
• ICU (If so equipped)
• TCM (AISIN A/T only)
Does the scan tool display any DTCs? —
Go to Step 7 Go to Step 11
7 Does the scan tool display DTCs which begin with
U or other control module communication fault
DTCs? —
Go to Applicable
DTC Go to Step 8
8 Does the scan tool display ECM DTCs P0601,
P0602, P0604, P0606 or P1621? —Go to Applicable
DTC Go to Step 9
9 Does the scan tool display ECM DTCs P0562 or
P0563, P156A or P156B? —
Go to Applicable
DTC Go to Step 10
10 Is there any other code in any controller that has
not been diagnosed? —Go to Applicable
DTC Go to Step 11
11 Is the customer’s concern with the automatic
transmission? —Go to Diagnostic
System Check - Transmission
Controls Go to Step 12
12 Is the customer’s concern with the immobilizer
system? —Go to Diagnostic
System Check - Immobilizer
Controls Go to Step 13
13 1. Review the following symptoms.
2. Refer to the applicable symptom diagnostic table:
• Hard Start
• Rough, Unstable, or Incorrect Idle and Stalling
• High Idle Speed
•Cuts Out
• Surges
• Lack of Power, Sluggishness, or Sponginess
• Hesitation, Sag, Stumble
• Abnormal Combustion Noise
• Poor Fuel Economy
• Excessive Smoke (Black Smoke)
• Excessive Smoke (White Smoke)
Did you find and correct the condition? —
System OK Go to Intermittent
Conditions
Step
Action Value(s)Yes No

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-49
Cam/ Crank Sensor Signal Synchronization Status Asynchronous/ No
Crank Signal/ Synchronous Synchronous Synchronous
Engine Runtime Time (hour: minute: second) Va r i e s
Va r i e s
Vehicle Speed km/h / MPH0 km/h / 0 MPH 0 km/h / 0 MPH
Transmission Gear Out of gear/ 1st/ 2nd/ 3rd/ 4th/ 5th Out of gear
Out of gear
Starter Switch On/OffOn On
Ignition Switch On/OffOn On
Ignition Voltage Volts11.0 to 15.0 volts 11.0 to 15.0 volts
Battery Voltage Volts11.0 to 15.0 volts 11.0 to 15.0 volts
Fuel Pump Relay Command On/ Off OnOn
Swirl Control Solenoid Command On/ Off OnOn
Fuel Filter Switch On/ OffOn On
A/C Request Signal On/ OffOff Off
A/C Relay Command On/ OffOff Off
Park/ Neutral Switch Neutral/ In Gear NeutralNeutral
Glow Relay Command On/ OffOff Off
Glow Plug Lamp Command On/ Off OffOff
Brake Switch 1 Applied/ Released Released Released
Brake Switch 2 Applied/ Released Released Released
Clutch Pedal Switch Applied/ Released ReleasedReleased
Cruise Main Lamp Command On/ Off OffOff
Cruise Main Switch On/ OffOff Off
Cruise Cancel Switch On/ OffOn On
Cruise Resume Switch On/ OffOff Off
Cruise Set Switch On/ OffOff Off
MIL Command (Malfunction Indicator Lamp) On/ Off
Off Off
SVS Lamp Command (Service Vehicle Soon) On/ Off
Off Off
Limp Home Mode None/ 1/ 2/ 3/ 4 None None
Distance While MIL is Activated km/ Mile 0 km/ 0 Mile0 km/ 0 Mile
Engine Runtime With MIL Active minutes 00
Total Engine Overspeed Event Counter VariesVaries
Total Engine Coolant
Overtemperature Event Counter
Varies Varies
Total Fuel Temperature
Overtemperatrure Event Counter
Varies Varies
Total Intake Air Temperature Overtemperaure Event Counter
Varies Varies
Immobilizer Function Programmed Ye s / N o
Ye s Ye s
Wrong Immobilizer Signal Yes/ NoNo No
Scan Tool Parameter Units Displayed Typical Data Value at Engine Idle Typical Data Value at 2000RPM

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-53
Cam/ Crank Sensor Signal/ Synchronization Status
This parameter displays the synchronization state of
the crankshaft position (CKP) sensor signal and
camshaft position (CMP) sensor signal. Asynchronous
indicates the CMP sensor signal is not detected or only
CKP sensor signal is detected. No Crank Signal
indicates CMP sensor signal is detected but CKP
sensor signal is not detected. Synchronous indicates
both sensor signals are detected correctly.
Engine Runtime
This parameter displays the time elapsed since the
engine start. The scan tool will display the time in
hours, minutes and seconds. The engine run time will
reset to zero as soon as the ignition switch is OFF.
Vehicle Speed
This parameter indicates the vehicle speed calculated
by the ECM using the signal from the vehicle speed
sensor (VSS). The scan tool will display a low value at
lower vehicle speeds, and a high value at higher
vehicle speeds.
Transmission Gear
This parameter displays the estimated transmission
gear position as calculated by the ECM based on
inputs from the vehicle speed and the engine speed.
Starter Switch
This parameter displays the input status of the starter
switch to the ECM. When the ignition switch is turned at
START position, the scan tool displays On.
Ignition Switch
This parameter displays the input status of the ignition
switch to the ECM. When the ignition switch is turned
ON position, the scan tool displays On.
Ignition Voltage
This parameter displays the ignition voltage measured
at the ignition feed circuit of the ECM. Voltage is
applied to the ECM when the ignition switch is ON
position.
Battery Voltage
This parameter displays the battery voltage measured
at the ECM main relay switched voltage feed circuit of
the ECM. Voltage is applied to the ECM when the ECM
main relay is energized.
Fuel Pump Relay Command
This parameter displays the commanded state of the
fuel pump relay control circuit. On indicates the fuel
pump relay control circuit is being grounded by the
ECM, allowing fuel pumping from the tank.
Swirl Control Solenoid Command
This parameter displays the commanded state of the
swirl control solenoid control circuit. On indicates the
swirl control solenoid control circuit is being grounded
by the ECM, allowing vacuum pressure to the swirl
control
actuator. Fuel Filter Switch
This parameter displays the input state of the fuel
pressure switch to the ECM. When the large vacuum
pressure is generated in the fuel suction line such as
clogged fuel filter, the scan tool displays Off.
A/C Request Signal
This parameter displays the input state of the air
conditioning (A/C) request to the ECM from the
heating, ventilation, and air conditioning (HVAC)
controls. When the HVAC system is requesting to
ground the A/C compressor clutch, the scan tool
displays On.
A/C Relay Command
This parameter displays the commanded state of the A/
C compressor relay control circuit. On indicates the A/C
compressor relay control circuit is being grounded by
the ECM, allowing voltage to the A/C compressor.
Park/ Neutral Switch
This parameter displays the input state of the neutral
switch to the ECM. When the transmission gear is Park
or Neutral, the scan tool displays Neutral.
Glow Relay Command
This parameter displays the commanded state of the
glow relay control circuit. On indicates the glow relay
control circuit is being grounded by the ECM, allowing
voltage to the glow plugs.
Glow Plug Lamp Command
This parameter displays the commanded state of the
glow indicator lamp control circuit. The glow indicator
lamp should be On when the scan tool indicates
command On. The glow indicator lamp should be Off
when the scan tool indicates command Off.
Brake Switch 1
This parameter displays the input state of the brake
pedal switch 1 to the ECM. When the brake pedal is
depressed, scan tool displays Applied.
Brake Switch 2
This parameter displays the input state of the brake
pedal switch 2 to the ECM. When the brake pedal is
depressed, scan tool displays Applied.
Clutch Pedal Switch
This parameter displays the input state of the clutch
pedal switch to the ECM. When the clutch pedal is
depressed, scan tool displays Applied.
Cruise Main Lamp Command
This parameter displays the commanded state of the
cruise main lamp control circuit. The cruise main lamp
should be On when the scan tool indicates command
On. The cruise main lamp should be Off when the scan
tool indicates command Off.
Cruise Main Switch
This parameter displays the input state of the cruise
main switch to the ECM. When the Cruise Main switch
is pushed, the scan tool displays On.

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

ENGINE CONTROL SYSTEM (4JK1/4JJ1) 6E-57
Scan Tool Does Not Communicate with CAN Device
Circuit Description
The ECM, transmission control module (TCM) (AISIN
A/T only) and immobilizer control unit (ICU) all
communicate with the scan tool over the controller area
network (CAN) link. The ECM, TCM, ICU and the data
recording module (DRM) communicate with each other
over the same CAN link. If no immobilizer system is
installed, the instrument panel (IP) cluster has a CAN
terminating resistor instead of the ICU.
Diagnostic Aids
The following conditions will cause a loss of CAN serial
data communication between the TCM and ICU or
between the scan tool and any control module: • A CAN serial data circuit open
• A CAN serial data circuit shorted to ground
• A CAN serial data circuit shorted to voltage
• An internal condition within a module or connector on the CAN serial data circuit, that causes a short
to voltage or ground to the CAN serial data circuit
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Engine Controls
Connector End Views or ECM Connector End Views
Circuit/ System Testing Scan Tool Does Not Communicate with CAN Device
Step Action Value(s)Yes No
1 Did you perform the Diagnostic System Check -
Engine Controls? —
Go to Step 2 Go to Diagnostic
System Check - Engine Controls
2 Important
: Make sure the CANdi module is not
malfunctioning. When functioning properly, the
CANdi module LED will be flashing. In the event of
a problem, the LED will be continually illuminated
or not illuminated.
1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Attempt to establish communication with the listed control modules.
•ECM
• Immobilizer Control Unit (ICU) (If so equipped)
• Transmission control module (TCM) (AISIN A/T only)
Does the scan tool communicate with any of the
listed control modules? —
Go to Step 3 Go to Step 7
3 Does the scan tool communicate with the ECM?
—
Go to Step 4 Go to Lost
Communication with
The Engine Control Module (ECM)
4 Notice:
If no AISIN automatic transmission is
installed, skip to Step 5.
Does the scan tool communicate with the TCM? —
Go to Step 5 Go to Diagnostic
System Check -
Transmission Controls
5 Notice:
If no immobilizer system is installed, skip to
Step 6.
Does the scan tool communicate with the ICU? —
Go to Step 6 Go to Diagnostic
System Check -
Immobilizer Controls
6 Test the CAN Low and High serial data circuit for an
intermittently short to ground or intermittently short
to voltage. Then, test the CAN Low and High serial
data circuit for an intermittently open (based on
which control module did not communicate) at the
connection in the circuit.
Did you find and correct the condition? —
Go to Step 19 System OK

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

6E-58 ENGINE CONTROL SYSTEM (4JK1/4JJ1)
71. Inspect for an intermittent, for poor
connections and for corrosion at the data link
connector (DLC) (pins 6 and 14 of B-58).
2. Repair the connection(s) as necessary.
Did you find and correct the condition? —
Go to Step 19 Go to Step 8
8 Notice:
If no data recording module (DRM) is
installed, skip to Step 9.
1. Turn OFF the ignition.
2. Disconnect the DRM C-139 harness connector.
3. Turn ON the ignition, with the engine OFF.
4. Attempt to communicate with the ECM, TCM and ICU.
Does the scan tool communicate with the ECM,
TCM and ICU? —
Go to Step 14 Go to Step 9
9 1. Turn OFF the ignition.
2. Reconnect the DRM harness connector if disconnected.
3. Disconnect the ECM J1 (E-90) and J2 (C-58) harness connectors.
4. Turn ON the ignition, with the engine OFF.
5. Attempt to communicate with the TCM and ICU.
Does the scan tool communicate with the TCM and
ICU? —
Go to Step 15 Go to Step 10
10 Notice:
If no AISIN automatic transmission is
installed, skip to Step 11.
1. Turn OFF the ignition.
2. Reconnect the ECM J1 (E-90) and J2 (C-58) harness connectors.
3. Disconnect the TCM C-94 and C-95 harness connectors.
4. Turn ON the ignition, with the engine OFF.
5. Attempt to communicate with the ECM and ICU.
Does the scan tool communicate with the ECM and
ICU? —
Go to Step 16 Go to Step 11
11 Notice:
If no immobilizer system is installed, skip to
St ep 1 2.
1. Turn OFF the ignition.
2. Reconnect the ECM J1 (E-90) and J2 (C-58) harness connectors if disconnected.
3. Reconnect the TCM C-94 and C-95 harness connectors if disconnected.
4. Disconnect the ICU B-68 harness connector.
5. Turn ON the ignition, with the engine OFF.
6. Attempt to communicate with the ECM and TCM.
Does the scan tool communicate with the ECM and
TCM? —
Go to Step 17 Go to Step 13
Step
Action Value(s)Yes No

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007