Code No. P2148: Injector Common 1 (Cylinder No. 1 and No. 4) Circuit Battery Short
OPERATION
- Refer to Code No. P0201: No. 1 Injector Circuit Malfunction
- Refer to Code No. P0204: No. 4 Injector Circuit Malfunction
FUNCTION
- The engine-ECU monitors voltage application to the injector during no injector
energisation to detect errors in the No. 1 and No. 4 injector drive circuit.
TROUBLE JUDGEMENT
Check Condition
- Ignition switch is in "ON" position.
- Short-circuit to the battery is detected in the injector drive circuit.
FAIL-SAFE AND BACKUP FUNCTION
- The engine is stopped (The fuel injection and pump pressure feed are stopped).
- The throttle valve is opened (Electrical discontinuity).
- The EGR control is stopped (fully closed).
- The DPF regeneration is prohibited.
- The AS&G control is prohibited.
PROBABLE CAUSES
- Short circuit in injector circuit or loose connector contact
- Failed No. 1 injector
- Failed No. 4 injector
- Failed engine-ECU
DIAGNOSIS PROCEDURE |
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STEP 1. Connector check: B-101 and B-106 injector connector. |
Q.
Are the check results normal?
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Go to Step 2 . |
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Repair or replace the connector. |
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STEP 2. Connector check: B-09 engine-ECU connector. |
Q.
Is the check result normal?
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Go to Step 3 . |
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Repair or replace the connector. |
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STEP 3. Check harness between B-09 (terminal No. 2) engine-ECU connector and B-101 (terminal No. 2) No. 1 injector connector. |
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Q.
Is the check result normal?
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Go to Step 4 . |
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Repair the damaged harness wire. |
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STEP 4. Check harness between B-09 (terminal No. 27) engine-ECU connector and B-106 (terminal No. 2) No. 4 injector connector. |
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Q.
Is the check result normal?
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Go to Step 5 . |
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Repair the damaged harness wire. |
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STEP 5. Check harness between B-09 (terminal No. 1) engine-ECU connector and B-101 (terminal No. 1) No. 1 injector connector. |
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Q.
Is the check result normal?
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Go to Step 6 . |
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Repair the damaged harness wire. |
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STEP 6. Check harness between B-09 (terminal No. 25) engine-ECU connector and B-106 (terminal No. 1) No. 4 injector connector. |
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Q.
Is the check result normal?
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Go to Step 7 . |
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Repair the damaged harness wire. |
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STEP 7. Check Injector itself |
Q.
Is the check result normal?
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Go to Step 8 . |
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Replace the injector. |
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STEP 8. M.U.T.-III diagnosis code. |
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Q.
Is the diagnosis code set?
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Replace the engine-ECU. |
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Intermittent malfunction (Refer to GROUP 00 -
How to Use Troubleshooting/Inspection
Service Points -
How to Cope with Intermittent Malfunctions ). |
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