sensor ISUZU AXIOM 2002 Service Repair Manual

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±53
DTC P0730 Gear Error Without Input Speed
D07RY00055
Circuit Description

The Powertrain Control Module (PCM) calculates the
slippage of the converter and transmission based
upon the engine speed, the output speed, and the
current gear ratio.

The slippage of the converter at a high enough engine
speed is low. The transmission should not slip more
than a given value when there is no shift.

This DTC detects a slip at each gear. This is a type
ªCº DTC.
Conditions For Setting The DTC

No Output Speed Sensor DTC(s) P0722, P0723.

Not in Park, Neutral, or Reverse.

Engine speed is greater than 3,500 rpm.

3 seconds since upshift.
No Transmission Range Switch DTC(s) P0705,
P0706.

3 seconds since downshift.

3 seconds since garage shift (N"D).

And one of the following conditions occur:
± Slip is greater than 508 rpm in 1st gear.
± Slip is greater than 468 rpm in 2nd gear.
± Slip is greater than 449 rpm on 3rd gear.
± Slip is greater than 440 rpm on 4th gear.

All conditions met for 5.5 seconds.Action Taken When The DTC Sets

Maximum line pressure.

The PCM will not illuminate the Malfunction Indicator
Lamp (MIL).

7A1±54
TRANSMISSION CONTROL SYSTEM (4L30±E)

The PCM will illuminate the CHECK TRANS Lamp.

Turn force motor OFF.
Conditions For Clearing The DTC/CHECK
TRANS Lamp

The PCM will turn ªoffº the CHECK TRANS Lamp
after three consecutive ignition cycles without a
failure reported.

The DTC can be cleared from PCM memory by using
a scan tool.

The DTC can also be cleared from memory when the
vehicle has made 40 warmup cycles without a failure
reported.

The PCM will cancel the DTC Actions Taken items
when the fault conditions no longer exist and the
ignition is cycles ªoffº long enough to power down the
PCM.
Diagnostic Aids

Check for intermittent output speed sensor circuit
problems.

Check for possible incorrect calibration. (PCM part
No., tire specification, and rear axle ratio)
Test Description
The numbers below refer to the step numbers on the
diagnostic chart:
3. This step checks for possible low fluid level causing
slipping resulting in an undefined gear ratio.
4. This step checks for correct gear ratios for
commanded gears.
5. This step checks for low line pressure.
DTC P0730 Gear Error Without Input Speed
StepActionYe sNo
1Were you sent here from the ªOn±Board Diagnostic (OBD)
System Checkº?
Go to Step 2
Go to OBD
System Check
Refer to
Driveability and
Emission in
Engine section
2Visually inspect the transmission cooling system for fluid leaks.

Refer to
Chart 16: Possible Causes of Transmission Fluid
Leaks of Mechanical/Hydraulic Diagnosis Symptoms Index in
Automatic Transmission (4L30±E) section
Was condition found and corrected?Go to Step 7Go to Step 3
3Refer to Checking Transmission Fluid Level and Condition in
Automatic Transmission (4L30±E) section.
Has transmission fluid checking procedure been performed?
Go to Step 4
Go to Checking
Transmission
Fluid Level and
Condition in
Automatic
Transmission
(4L30±E) section
41. Install the scan tool.
2. Turn the ignition switch to the ªonº position.
3. Engine not running.
NOTE: Before clearing DTC(s) use the scan tool to record the
ªFailure Recordsº for reference, as data will be lost when the ªClear
Infoº function is used.
4. Record the Failure Record data.
5. Use the scan tool snapshot mode to record transmission gear
ratios.
6. Drive vehicle in transmission gear ranges L, 2, 3, and D with
the engine speed is greater than 3,500 rpm for 5.5 seconds.
7. Record each transmission gear.
1st:2.73 ± 2.99
2nd:1.54 ± 1.71
3rd:0.93 ± 1.05
4th:0.66 ± 0.78
Does commanded gear ratio match ranges as shown?
Refer to
Diagnostic AidsGo to Step 5

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±57
Diagnostic Aids

If the TCC is mechanically stuck ªonº with the parking
brake applied and any gear range selected, the TCC
fluid will mechanically apply the TCC, possibly
causing an engine stall.
Test Description
The number below refers to the step number on the
diagnostic chart:
3. This test checks the mechanical state of the TCC.
(When the PCM commands the TCC solenoid ªoffº,
the slip speed should increase).
DTC P0742 Torque Converter Clutch (TCC) System Stuck On
StepActionYe sNo
1Were you sent here from the ªPowertrain On±Board Diagnostic
(OBD) System Checkº?
Go to Step 2
Go to OBD
System Check
Refer to
Driveability and
Emissions in
Engine section
21. Install the scan tool.
2. With the engine ªoffº, turn the ignition switch ªonº.
NOTE: Before clearing DTC(s), use the scan tool to record ªFreeze
Frameº and ªFailure Recordsº for reference, as data will be lost
when the ªClear Infoº function is used.
3. Record the DTC ªFreeze Frameº and ªFailure Recordsº.
4. Using the scan tool, verify the ªTP Sensorº operation.
Are the ªTP Sensorº values within 0.6 ± 5.0 volts?
Go to Step 3
Go to Diagnostic
Aids
3Drive the vehicle in the D4 drive range in fourth gear under steady
acceleration, with a TP angle greater than 20%.
Does the scan tool display ªTCC Slip Speedº between ±30 and
+30 rpm, while the displayed TCC solenoid state is ªoffº?
Go to Step 4
Go to Diagnostic
Aids
4The TCC is mechanically stuck ªonº. Check the following items:

Clogged exhaust orifice in the TCC solenoid.

Converter clutch apply valve stuck in the apply position.

Misaligned or damaged valve body gasket.

Restricted release passage.
Was a problem found and corrected?
Go to Step 5Ð
51. After the repair is complete, use the scan tool to select ªDTCº,
then ªClear Infoº function and ensure the following conditions
are met:
TCC slip speed must be between 200 and 2,500 rpm for 4
seconds.
2. Review the scan tool ªDTC Infoº.
Has the last test failed or is the current DTC displayed?
Begin diagnosis
again
Go to
Step 1
Repair verified
Exit DTC table

TRANSMISSION CONTROL SYSTEM (4L30±E)7A1±89
Transmission Fluid Temperature (TFT) Sensor Specifications
TemperatureTemperatureMinimum
ResistanceNominal
ResistanceMaximum
ResistanceSignal

F
C


Volts
-40-406005006642007311005.00
-22-303198003504003824004.65
-4-201774001927002086004.41
14-101022001101001183004.00
3206087065110694503.52
50103741039750421202.98
68202366024980263002.40
86301527016120169701.85
104401004010660112901.43
122506758721176734.29
140604645498053244.04
158703255350637653.69
176802323251327103.34
194901685183119823.04
2121001242135514722.58
23011 0929101711092.24
2481207047738461.97
2661305405956531.67
2841404194645111.42
3021503293654031.16

8C±8ENTERTAINMENT
Horn
Removal
1. Disconnect the battery ground cable.
2. Remove the horn.

Disconnect the connector.

Remove the horn mounting bolt.
NOTE: High (1), Low (2)
828R200003
Installation
To install, follow the removal steps in the reverse order.
Display (MID)
Removal
1. Disconnect the battery ground cable.
2. Remove the cluster upper cover.

Disconnect the sun sensor connector and the GPS
control unit connector.
3. Remove the center cluster.

Refer to
Instrument Panel Assembly in Body
Structure.
4. Remove the Display (1).

Remove the screws (2).

Disconnect the Display connector and MID control
unit connector.
890R200036
Installation
To install, follow the removal steps in the reverse order.

8C±10ENTERTAINMENT
GPS Control Unit
Removal
1. Disconnect the battery ground cable.
2. Remove the cluster upper cover (3).

Disconnect the sun sensor connector and the GPS
control unit connector.
3. Remove the GPS control unit (2).

Remove the screws (1).
890R200035
Installation
To install, follow the removal steps in the reverse order.

ENTERTAINMENT8C±17
MID Self-Diagnosis
StepActionValue(s)Ye sNo
11. Simultaneously press and hold the RESET key and
the CLOCK key (on the display panel).
2. Turn the ignition switch to the ON position.
Does DIAG appear on the display screen?
ÐGo to Step 2
Check power
supply and
components
connections.
Start
self-diagnosis
again.
2Press and release the CLOCK key (1 time only).
Does DIAG MID appear on the display?
ÐGo to Step 3Ð
3Press and release the CLOCK key (1 time only) to
begin GPS communications diagnosis.
Does GPS OK appear on the display?
ÐGo to Step 5
On ERROR1,
Go to
Step 4
4Repair open circuit between MID and GPS receiver
(I-13±2 ~ I-16±5).
Is the action complete?
ÐGo to Step 1Ð
5Press and release the CLOCK key (1 time only) to
begin fuel injection pulse diagnosis.
Does F-INJ OK appear on the display?
ÐGo to Step 7
On ERROR2,
Go to
Step 6
6Repair open fuel injection pulse circuit (I-13±5 ~
E35±8).
Is the action complete?
ÐGo to Step 1Ð
7Press and release the CLOCK key (1 time only) to
begin fuel remainder pulse diagnosis.
Does F-SENS OK appear on the display?
ÐGo to Step 9
On ERROR3,
Go to
Step 9
8Repair open fuel remainder pulse circuit (I-13±6 ~
E35±48).
Is the action complete?
ÐGo to Step 1Ð
9Press and release the CLOCK key (1 time only) to
begin gyro-sensor diagnosis.
Does GYRO OK appear on the display?
ÐGo to Step 11
On ERROR4,
Go to
Step 10
10Replace the MID control unit.
Is the action complete?
ÐGo to Step 1Ð
111. Press and release the CLOCK key (1 time only) to
begin vehicle speed sensor diagnosis.
2. Drive vehicle.
Does SPEED OK appear on the display?
ÐGo to Step 13
On ERROR5,
Go to
Step 12
12Repair open vehicle speed sensor circuit (I-13±15 ~
E43±3).
Is the action complete?
ÐGo to Step 1Ð
13Press and release ON/OFF key to return to start of
diagnosis screen.
Is the action complete?
ÐGo to Step 1Go to Step 14
14Press and release the SERVICE key.
Is the action complete?
ÐGo to Step 2Ð

8C±20ENTERTAINMENT
No COMPASS Display
StepActionValue(s)Ye sNo
1Does ªÐº appear on the display?ÐGo to Step 2Go to Step 3
2Use the self-diagnosis mode to perform MID
self-diagnosis followed by GPS receiver and
gyro-sensor self-diagnosis.
Is the action complete?
ÐGo to Step 1Ð
3Replace the MID and/or DISPLAY.
Is the action complete?
ÐGo to Step 1Ð
No SERVICE Display
StepActionValue(s)Ye sNo
1Is SERVICE displayed?ÐGo to Step 3Go to Step 2
2Replace the MID and/or display.
Is the action complete?
ÐGo to Step 1Ð
3Does SERVICE display change?ÐGo to Step 4Go to Step 5
4CALENDER does not display
MID self-diagnosis followed by GPS receiver
self-diagnosis
Ð
Refer to
self-diagnosis
items
Ð
5MID self-diagnosis followed by GPS receiver
self-diagnosis
Ð
Refer to
self-diagnosis
items
Ð

ENTERTAINMENT8C±21
Other Trouble Symptom
ConditionPossible causeCorrection
Elapsed time does not displayAn open circuit between GPS
receiver and MID control unit.Repair an open circuit.
Fuel consumption does not displayMID control unit and/or DISPLAY
not functioning.Replace the MID control unit and/or
DISPLAY.
Possible turning distance does not
changeAn open circuit between MID control
unit No.I-13±6 terminal and PCM
No.E35±48 terminal.Repair an open circuit.
Average fuel consumption does not
displayAn open circuit between MID control
unit No.I-13±5 terminal and PCM
No.E35±8 or MID control unit
NO.I-13±15 terminal and vehicle
speed sensor terminal No.E43±3.Repair an open circuit.
Current fuel consumption does not
displayRefer to average fuel consumption
items.Repair an open circuit.
Compass does not changeAn open circuit between MID control
unit and GPS receiver or insufficient
signal output of gyro sensor.Repair an open circuit and/or replace
gyro sensor.
CALENDER does not displayMID control unit and/or display not
functioning.Replace the MID control unit and/or
DISPLAY.
SERVICE does not changeAn open circuit of the vehicle speed
sensor.Repair an open circuit.
Units cannot be changedMID not functioning.Replace the MID control unit.

8D±4
WIRING SYSTEM
Relay / Fuse Box (Engine Room)
D08R200046
Legend
(1) Fuse/Relay Box
(2) Option Box
(3) Diode (Not Used)
(4) Diode
(5) Heater Relay
(6) A/C Compressor Relay
(7) Headlamp Relay RH
(8) Not Used
(9) Fog Lamp Relay
(10) Not Used
(11) Not Used
(12) Thermo Relay
(13) Headlamp Relay LH
(14) Starter Relay
(15) ECM Main
(16) Fuel Pump Relay
(17) Not Used
(18) IG.1 (+B.1 60A)
(19) Main (100A)(20) ECM (30A)
(21) ABS (50A)
(22) IG.2 (+B.2 50A)
(23) Condenser Fan (30A)
(24) Hazard (15A)
(25) Horn (10A)
(26) ACG±S (10A)
(27) Seat Heater (15A)
(28) Blower (15A)
(29) Blower (15A)
(30) A/C (10A)
(31) Headlamp±LH (20A)
(32) Headlamp±RH (20A)
(33) Fog Lamp (15A)
(34) O
2 Sensor (20A)
(35) Fuel Pump (20A)
(36) ECM (15A)
(37) TOD (15A)
(38) Intelligent Suspension Relay (30A)
(39) Condenser Fan Relay