Pinpoint Test QA: Unable To Activate Self-Test/Network Communication Error: Introduction
This pinpoint test is intended to diagnose the following:
- unable to communicate with the PCM
- unable to activate the PCM self-test
- incorrect self-test procedure
- harness circuits: ISP-R, PCMRC, PWRGND and VPWR
Harness Side
| Circuit | Pin |
|---|---|
| ETCREF (Electronic Throttle Control Reference Voltage) | 5 |
| ETCRTN (Electronic Throttle Control Return) | 4 |
Harness Side
| Circuit | Pin |
|---|---|
| VPWR (Vehicle Power) | B100 |
| ISP-R (Ignition Switch Position Run) | B64 |
| PCMRC (PCM Relay Control) | B25 |
| VPWR (Vehicle Power) | B102 |
| VPWR (Vehicle Power) | B101 |
| PWRGND (Power Ground) | B96 |
| PWRGND (Power Ground) | B97 |
| PWRGND (Power Ground) | B98 |
| PWRGND (Power Ground) | B99 |