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TROUBLESHOOTING MULTIPOINT FUEL INJECTION (MPI) 13A-113 STEP 5. Check harness between oxygen sensor • Check output line for short circuit. Q: Is the check result normal? YES : Go to Step 6. NO : Repair or replace the connector, or repair STEP 6. M.U.T.-III diagnosis code • Reconfirmation of diagnosis code. Q: Is the diagnosis code set? YES : Replace the engine-ECU. NO : Intermittent malfunction (Refer to GROUP − How to Use Troubleshooting/Inspection Service Points − How to Cope with Intermittent Malfunctions STEP 7. Perform voltage measurement at • Disconnect engine-ECU connector, and connect special tool power plant ECU check harness • Ignition switch: "ON" • Voltage between terminal ORLE and body earth. OK: 0.4 − 0.6 V Q: Is the check result normal? YES : Go to Step 6. NO : Go to Step 8. STEP 8. Check harness between oxygen sensor • Check earthing line for short circuit. Q: Is the check result normal? YES : Go to Step 9. NO : Repair or replace the connector, or repair STEP 9. Check harness between oxygen sensor • Check output line for short circuit. Q: Is the check result normal? YES : Go to Step 6. NO : Repair or replace the connector, or repair Code No. P2530: Ignition Switch-IG1 Circuit CAUTION • When the ETACS-ECU of vehicles without KOS is replaced, the encrypted code of the − How to Register Key ID .) OPERATION • When the ignition switch is turned on, the ignition switch ON signal is input into the engine-ECU FUNCTION • The engine-ECU compares the ignition switch ON signal sent from the ignition switch <Vehicles TROUBLE JUDGMENT Check Condition • Ignition switch: "ON" → "LOCK" (OFF) Judgement Criterion • While the ignition switch ON signal is input into the engine-ECU, the ignition switch information, |