Code No. P0262: No. 1 Injector Circuit High Input




OPERATION




FUNCTION




TROUBLE JUDGEMENT


Check Conditions
Judgement Criterion

FAIL-SAFE AND BACKUP FUNCTION




PROBABLE CAUSES




DIAGNOSIS PROCEDURE


STEP 1. M.U.T.-III actuator test



  • Item 1: No. 1 injector
OK: Idling state varies.

Q. Is the check result normal?

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Go to Step 2.

STEP 2. Check No. 1 injector itself.



  • No. 1 Injector connector check.
  • Injector check (Refer to ).

Q. Is the check result normal?

Go to Step 3.
Repair or replace the connector, or replace the No. 1 injector.

STEP 3. Check harness between No. 1 injector connector terminal and engine-ECU connector terminal INJ1.



  • Check output line for short circuit.

Q. Is the check result normal?

Go to Step 4.
Repair or replace the connector, or repair the damaged harness wire.

STEP 4. Perform signal wave pattern measurement at engine-ECU connector (Using an oscilloscope).



  • Disconnect engine-ECU connector, and connect special tool power plant ECU check harness (MB992110) to measure at connector for inspection.
  • Set the vehicle to the continuous idling mode.
  • Select lever position indicator: P
  • Voltage between terminal INJ1 and body earth.
OK: Waveforms should be displayed on inspection procedure using an oscilloscope (Refer to ).

Q. Is the check result normal?

Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions ).
Replace the engine-ECU.