Circuit Inspection
| Inspection Condition | (+) Probe | (-) Probe | Reference | ||
|---|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | ||
|
HECU connector | 23 (P-CAN high) | TCM connector | 22 (P-CAN low) | Approx. 60Ω |
|
HECU connector | 1, 30 (Memory power) | Chassis ground | - | B+ |
| HECU connector | 37 (ON/START Input) | Chassis ground | - | B+ | |
|
HECU connector | 14, 46 (ground) | Chassis ground | - | Approx. below 1Ω |
|
HECU connector | 23 (P-CAN high) | Chassis ground | - | Fig.1 |
| HECU connector | 22 (P-CAN low) | Chassis ground | - | ||
Good
- Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and Go to "VERIFICATION OF REPAIR " procedure.
No Good
- If no problems were found with the circuits or connectors, replace the HECU and Go to "VERIFICATION OF REPAIR " procedure.
* If a module is replaced, perform the relevant "Vehicle S/W Management" procedure.