1998 ISUZU TROOPER immobilizer

6E±211 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0352 ± Ignition 2 Control Circuit

 
StepNo Ye s Value(s) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
ÐGo to Step 12Go to Step 13
12Repair the open ignition control circuit.
Is the action complete?
ÐVerify repairÐ
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?ÐVerify repairÐ

6E±214
ENGINE DRIVEABILITY AND EMISSIONS
DTC P0353 ± Ignition 3 Control Circuit

 
StepNo Ye s Value(s) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
ÐGo to Step 12Go to Step 13
12Repair the open ignition control circuit.
Is the action complete?
ÐVerify repairÐ
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?ÐVerify repairÐ

6E±217 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0354 ± Ignition 4 Control Circuit

 
StepNo Ye s Value(s) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
ÐGo to Step 12Go to Step 13
12Repair the open in ignition control circuit.
Is the action complete?
ÐVerify repairÐ
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?ÐVerify repairÐ

6E±220
ENGINE DRIVEABILITY AND EMISSIONS
DTC P0355 ± Ignition 5 Control Circuit

 
StepNo Ye s Value(s) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
ÐGo to Step 12Go to Step 13
12Repair the open ignition control circuit.
Is the action complete?
ÐVerify repairÐ
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?ÐVerify repairÐ

6E±223 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0356 ± Ignition 6 Control Circuit

 
StepNo Ye s Value(s) Action
11Check for an open ignition control circuit 1.
Was the ignition control circuit open?
ÐGo to Step 12Go to Step 13
12Repair the open ignition control circuit.
Is the action complete?
ÐVerify repairÐ
13Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?ÐVerify repairÐ

6E±227 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0404 ± EGR Open Stuck

StepActionValue(s)Ye sNo
1Was the ªOn-Board Diagnostic (OBD) System Checkº
performed?
ÐGo to Step 2
Go to OBD
System
Check
21. Ignition ªON,º engine ªOFFº, review and record
Tech 2 Failure Records Data.
2. Operate the vehicle within Failure Records
conditions as noted.
3. Using Tech 2, monitor ªSpecific DTCº info for DTC
P0404 until the DTC P0404 test runs. Note the
result.
Does Tech 2 indicates DTC P0404 failed this ignition?
ÐGo to Step 3
Refer to
Diagnostic
Aids
31. Disconnect the EGR valve harness connector.
2. Inspect the EGR valve and connectors for damaged
pin or terminals.
Were there any damaged pins or terminals?
ÐGo to Step 4Go to Step 5
4Repair the damaged pin or terminal.
ÐVerify repair
Is the action
complete?
51. Remove EGR valve from Engine.
2. Inspect EGR valve whether there is any excessive
carbon deposit on EGR shaft.
Was excessive carbon deposit 0n EGR valve shaft?
ÐGo to Step 6Go to Step 7
61. Clean up EGR valve shaft and inside of EGR valve.
2. Visually inspect damage of pintle and seat whether
there is bent, leakage may occur.
Was there any severe damage which affects function?
ÐGo to Step 8
Verify repair
Go to
Step 7
71. Reconnect.
2. Ignition ªOFFº.
3. Install Tech 2.
4. Run the engine at idle.
5. On Tech 2, select F3:Misc. Test; F2:EGR.
6. Use the ªUPº arrow to increase the EGR from 0% to
40%.
Did EGR work properly?
ÐÐGo to Step 8
8Replace the EGR valve.
Does DTC P0404 still fail ªDTCº test on Tech 2?
ÐGo to Step 9Verify repair
9Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?ÐVerify repairÐ

6E±230
ENGINE DRIVEABILITY AND EMISSIONS
DTC P0405 ± EGR Low Volt

 
StepNo Ye s Value(s) Action
121. Ignition ªONº.
2. Backprobe with a DVM to measure voltage at PCM
sensor ground pin and pintle position pin.
Was voltage in range?
Less than
0.1 V
Go to Step 13Go to Step 18
131. Ignition ªOFFº.
2. Disconnect the EGR harness.
3. Check short circuit between EGR pintle position
circuit and EGR ground circuit.
Was any short circuit?
ÐGo to Step 14Go to Step 18
14Locate and repair the short to ground in the pintle
position circuit
Is the action complete?
ÐVerify repairÐ
151. Ignition ªOFFº.
2. Disconnect the PCM.
3. Ignition ªONº.
4. Measure the voltage between the EGR pintle
position circuit and ground.
Is the measured voltage near the specified value?
Less than
0.1 V
Go to Step 17Go to Step 16
16Check for a short circuit between other wires and the
pintle position circuit
Was any short circuit?
Ð
Repair short
circuit
Verify repair
Go to Step 17
17Replace the EGR valve.
Does DTC P1404 still fail ªspecific DTC test on Tech 2?
ÐGo to Step 18Verify repair
18Examine the PCM pin and terminal connection.
Was there a damaged terminal?
ÐGo to Step 4Go to Step 19
19Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?ÐVerify repairÐ

6E±233 ENGINE DRIVEABILITY AND EMISSIONS
DTC P0406 ± EGR High Voltage

 
StepNo Ye s Value(s) Action
111. Ignition ªONº.
2. Use a DVM to backprobe at terminal C of EGR
valve for voltage.
Was measured voltage more than 4.8 V?
more than
4.8 V
Go to Step 12Go to Step 12
121. Ignition ªONº.
2. Stay the EGR harness connected.
3. Check voltage by backproving at PCM B7 terminal.
Was voltage more than 4.8 V?
4.8 VGo to Step 16Go to Step 13
131. Locate short circuit at EGR harness between RED
to RED or GREEN, RED to YEL.
2. Replace EGR harness.
Is the action complete?
ÐVerify repairÐ
14Replace EGR harness.
Is the action complete?
ÐVerify repairÐ
15Replace the EGR valve.
Does DTC P1404 still fail ªspecific DTC test on Tech 2?
ÐGo to Step 16Verify repair
16Replace the PCM.
IMPORTANT:The replacement PCM must be
programmed. Refer to
UBS 98model year Immobilizer
Workshop Manual.
Is the action complete?ÐVerify repairÐ