| CHECK ECM GROUND HARNESS. |
|
Measure the voltage between ECM connector and chassis ground. Connector & terminal (B137) No. 1 (+) — Chassis ground (−): (B137) No. 2 (+) — Chassis ground (−): (B137) No. 3 (+) — Chassis ground (−): (B137) No. 7 (+) — Chassis ground (−): (B134) No. 5 (+) — Chassis ground (−): |
| QUESTION | |
|
Is the voltage less than 1 V? | |
| Yes | No |
|
Replace the ECM. |
Repair the following item. • Further tighten the engine ground terminal. • Poor contact in ECM connector • Poor contact of coupling connector |
