Check Engine Control Module (ECM)

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK ECM SIGNAL . Start the engine. Measure the voltage between ECM connector and chassis ground. Connector & terminal (B136) No. 22 (+) - Chassis ground (-):	Is the voltage 0 ↔ 14 V or more?	Go to step 2 .	Inspect the ECM. Refer to BASIC DIAGNOSTIC PROCEDURE . Refer to BASIC DIAGNOSTIC PROCEDURE .
2 CHECK HARNESS BETWEEN COMBINATION METER AND ECM . Turn the ignition switch to OFF. Disconnect the connector from ECM and combination meter. Measure the resistance between ECM harness connector and combination meter harness connector. Connector & terminal (B136) No. 22 - (i10) No. 32:	Is the resistance less than 10 Ω?	Replace the meter case assembly.	Repair the wiring harness.