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- Measure battery voltage during cranking.
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Q.
Is the check result normal?
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Check
battery (Refer to GROUP 54A - Battery - On-vehicle Service
- Battery test ).
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- Check engine control relay itself (Refer to
).
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Q.
Is the check result normal?
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|
Replace the engine control
relay.
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|
|
|
Q.
Is the check result normal?
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- Remove relay, and measure at harness side.
- Voltage between terminal No. 2 and earth, also between terminal No. 3
and earth.
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Q.
Is the check result normal?
|
|
Check
intermediate connector A-03 <L.H. drive vehicles>, D-137
<R.H. drive vehicles>, and repair if necessary. If intermediate
connector is normal, check and repair harness between B-15X (terminal No. 2
and terminal No. 3) engine control relay connector and battery.
|
|
|
|
Q.
Is the check result normal?
|
|
- Disconnect connector, and measure at harness side.
- Voltage between terminal No. 109 and earth.
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|
Q.
Is the check result normal?
|
|
Check
and repair harness between D-215 (terminal No. 109) engine-ECU connector
and B-15X (terminal No. 4) engine control relay connector.
|
|
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|
- Disconnect connector, and measure at harness side.
- Short-circuit terminal No. 109 to earth.
- Voltage between terminal No. 99 and earth also between terminal No.
100 and earth.
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|
Q.
Is the check result normal?
|
|
Check
intermediate connector D-113, and repair if necessary. If intermediate
connector is normal, check and repair harness between D-215 (terminal No.
99) engine-ECU connector and B-15X (terminal No. 1) engine control relay
connector also between D-215 (terminal No. 100) engine-ECU connector and
B-15X (terminal No. 1) engine control relay connector.
|
|
|
|
- Disconnect connector, and measure at harness side.
- Check open circuit between terminal No. 128 and earth.
|
|
Q.
Is the check result normal?
|
|
Q.
Is the check result normal?
|
|
- Disconnect connector.
- Check open circuit between terminal No. 22 and earth also between
terminal No. 61 and earth.
|
|
Q.
Is the check result normal?
|
|
- Disconnect connector, and measure at harness side.
- Ignition switch: ON
- Voltage between terminal No. 92 and earth.
|
|
Q.
Is the check result normal?
|
|
Check
intermediate connector D-231, and repair if necessary. If intermediate
connector is normal, check and repair harness between D-215 (terminal No.
92) engine-ECU connector and D-405 (terminal No. 28) J/B
connector.
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|
|
|
Q.
Does trouble symptom persist?
|
|
Replace the engine-ECU. When the
engine-ECU is replaced, write the chassis number (Refer to GROUP 00 -
Precautions Before Service - How to Perform Chassis Number Writing ). After replacing the
engine-ECU, register the injector identification code and learn fuel
injection (Refer to GROUP 00 - Precautions Before Service -
What The Common Rail Engine Learns ).
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Intermittent malfunction (Refer to
GROUP 00 - How to Use Troubleshooting/Inspection Service Points
- How to Cope with Intermittent Malfunction ).
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