| CHECK OUTPUT SIGNAL OF ECM. |
|
Measure the voltage between ECM connector and chassis ground. Connector & terminal (B136) No. 2 (+) — Chassis ground (−): (B136) No. 3 (+) — Chassis ground (−): |
| QUESTION | |
|
Does the voltage change by shaking the ECM harness and connector? | |
| Yes | No |
|
Repair the battery short circuit of harness between ECM and front oxygen (A/F) sensor connector. |
Finish the diagnosis. |