1998 ISUZU TROOPER Service Repair Manual

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Page 2017 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6E±124
4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0342 ÐCMP Sensor No Signal
StepNo Ye s Value(s) Action
81. Turn the ignition ªOFF.º
2. Disconnect the ECM and connect a DVM to moni

6E±124
4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0342 ÐCMP Sensor No Signal
StepNo Ye s Value(s) Action
81. Turn the ignition ªOFF.º
2. Disconnect the ECM and connect a DVM to monitor
voltage on the camshaft position signal circuit at the
ECM connector.
3. Ignition ªON.º
4. Monitor the voltage display on the DVM while
repeatedly touching the CMP sensor signal circuit
at the CMP sensor connector with a test light to
ground.
Does the DVM voltage display switch between 0 and
approximately 5 volts when the test light is touched to
the CMP sensor signal circuit?
ÐGo to Step 12Go to Step 9
91. Ignition ªOFF.º
2. Leave the ECM disconnected.
3. Ignition ªON.º
4. Probe the camshaft position signal circuit at the
ECM connector with a test light to B+.
5. If the test light is ªON,º locate and repair the short to
ground in the camshaft position input signal circuit.
Was either circuit shorted to ground?
ÐVerify repairGo to Step 10
101. Ignition ªOFF.º
2. Leave the ECM disconnected.
3. Ignition ªON.º
4. Probe the camshaft position signal circuit with a test
light to ground.
5. If the test light is ªON,º locate and repair the short to
voltage in the camshaft position input signal circuit.
Was the test light ªONº?
ÐVerify repairGo to Step 11
111. Ignition ªOFF,º disconnect the ECM (leave the CMP
sensor disconnected).
2. Ignition ªON,º check the following circuit:
The CMP sensor signal circuit for an open.
3. If a problem is found, repair it as necessary.
Was a problem found?
ÐVerify repairÐ
121. Ignition ªON.º
2. Remove the CMP sensor from the engine front
cover (leave the sensor wiring connected).
3. Place a magnet on the CMP sensor. If you use a
magnet that is too small to cover the face of the
sensor, test on every part of the sensor face
because only a small area will respond to this test.
Does the DVM display a voltage near the specified
value?
0 VGo to Step 14Go to Step 13
13Replace the camshaft position sensor.
Is the action complete?
ÐVerify repairÐ
141. Reinstall the CMP sensor to the engine front cover.
2. Observe the DVM connected to monitor voltage on
the camshaft position signal circuit while cranking
the engine.
Does the voltage toggle between the specified values?
4-0 VGo to Step 15Go to Step 16

Page 2018 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6E±125 4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0342 ÐCMP Sensor No Signal
StepNo Ye s Value(s) Action
15Replace the ECM (Refer to the Data Programming in
Case of ECM change).
Is th

Page 2019 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6E±126
4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0380 (Flash DTC 66)
Glow Relay Circuit Open/Short
060RW132
Circuit Description
Glow relay circuit receives current th

Page 2020 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6E±127 4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0380 ± Glow Relay Circuit Open/Short
StepActionValue(s)Ye sNo
1Was the ªOn-Board Diagnostic (OBD) System Checkº
performed?
ÐGo to Step 2
Go

Page 2021 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6E±128
4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P0381 (Flash DTC 67)
Glow Lamp Circuit Open/Short
060RW136
Circuit Description
Glow Lamp Circuit receives current thro

Page 2022 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6E±129 4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0381 ± Glow Lamp Circuit Open/Short
StepActionValue(s)Ye sNo
1Was the ªOn-Board Diagnostic (OBD) System Checkº
performed?
ÐGo to Step 2
Go

Page 2023 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6E±130
4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
Diagnostic Trouble Code (DTC) P1403 (Flash DTC 32)
EGR EVRV Fault
060RW135
Circuit Description
EGR EVRV Circuit has a common power source in
paralle

Page 2024 of 3573

ISUZU TROOPER 1998 Service Repair Manual 6E±131 4JX1±TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P1403 ± EGR EVRV Fault
StepActionValue(s)Ye sNo
1Was the ªOn-Board Diagnostic (OBD) System Checkº
performed?
ÐGo to Step 2
Go to OBD
System

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