ENGINE (DIAGNOSTICS)(H4SO) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)

DTC DETECTING CONDITION:

Immediately at fault recognition

TROUBLE SYMPTOM:

• Engine does not start.

• Engine stalls.

CAUTION:

After repairing or replacing the defective part, perform the Clear Memory Mode and Inspection Mode .

WIRING DIAGRAM:

• LHD model

• RHD model

STEP	CHECK	YES	NO
1.CHECK HARNESS CONNECTOR BETWEEN ECM AND ABSCM&H/U. 1) Turn the ignition switch to OFF. 2) Disconnect the connectors from TCM, ECM and ABSCM&H/U. 3) Measure the resistance of harness between ECM and ABSCM&H/U connector. Connector & terminal LHD model (B136) No. 27 — (B301) No. 26: RHD model (B136) No. 27 — (F49) No. 26:	Is the resistance less than 1 Ω?		Repair the open circuit of harness between ECM and ABSCM&H/U or repair the poor connection of connectors.
2.CHECK HARNESS CONNECTOR BETWEEN ECM AND ABSCM&H/U. Measure the resistance of harness between ECM and ABSCM&H/U connector. Connector & terminal LHD model (B136) No. 35— (B301) No. 11: RHD model (B136) No. 35 — (F49) No. 11:	Is the resistance less than 1 Ω?		Repair the open circuit of harness between ECM and ABSCM&H/U or repair the poor connection of connectors.
3.CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. 1) Turn the ignition switch to OFF. 2) Disconnect the connectors from TCM and ECM. 3) Measure the resistance of harness between TCM and ECM connector. Connector & terminal (B55) No. 17 — (B136) No. 35:	Is the resistance less than 1 Ω?		Repair the open circuit of harness between TCM and ECM or repair the poor connection of connectors.
4.CHECK HARNESS CONNECTOR BETWEEN TCM AND ECM. Measure the resistance of harness between TCM and ECM connector. Connector & terminal (B55) No. 18 — (B136) No. 27:	Is the resistance less than 1 Ω?		Repair the open circuit of harness between TCM and ECM or repair the poor connection of connectors.
5.CHECK HARNESS CONNECTOR BETWEEN TCM, ECM AND ABSCM&H/U. Measure the resistance between ECM and chassis ground. Connector & terminal (B136) No. 27 — Chassis ground: (B136) No. 35 — Chassis ground:	Is the resistance 1 MΩ or more?	TCM, ECM and ABSCM&H/U may be defective (Replace and check again.)	Repair the short circuit of harness between TCM, ECM and ABSCM&H/U.