Component Tests and General Diagnostics

AT/MT IDENTIFICATION CIRCUIT MALFUNCTION [MT VEHICLES]

CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY MODE and INSPECTION MODE.




WIRING DIAGRAM

10DH1: CHECK HARNESS BETWEEN ECM CONNECTOR AND ENGINE GROUNDING TERMINAL.
1. Turn ignition switch to ON.




2. Measure voltage between ECM and chassis ground.

CHECK: Is the voltage more than 2 V?

YES: Repair harness and connector.

NOTE: In this case, repair the following:
- Open circuit in harness between ECM connector and engine grounding terminal
- Poor contact in engine grounding terminal
- Poor contact in coupling connector (B21)

NO: Go to step 10DH2.

10DH2: CHECK POOR CONTACT.
Check poor contact in ECM connector.

CHECK: Is there poor contact in ECM connector?

YES: Repair poor contact in ECM connector.

NO: Contact with SOA service.

NOTE: Inspection by DTM is required, because probable cause is deterioration of multiple parts.