Circuit Inspection
| Inspection Condition | (+) Probe | (-) Probe | Specification | ||
|---|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | ||
|
MDPS unit connector | 1 (power) | Chassis ground | - | B+ |
| 1 (ON/START Input) | - | B+ | |||
| 2 (ground) | - | Approx. below 1Ω | |||
|
ICU connector | 9 (C-CAN high) | Chassis ground | - | Fig.1 |
| 10 (C-CAN low) | - | ||||
Good
- Go to "C-CAN Inspection" procedure.
No Good
- Repair as necessary and then go to "Verification of Repair " procedure.
| C-CAN Inspection | |||||
|---|---|---|---|---|---|
| Inspection Condition | (+) Probe | (-) Probe | Specification | ||
| Connector | Terminal | Connector | Terminal | ||
|
MDPS unit connector | 7 (C-CAN high) | MDPS unit connector | 8 (C-CAN low) | Approx. 60Ω |
| ESC connector | 22 (C-CAN high) | ESC connector | 35 (C-CAN low) | Approx. 60Ω | |
| MDPS unit connector | 7 (C-CAN high) | ESC connector | 22 (C-CAN high) | Approx. below 1Ω | |
| MDPS unit connector | 8 (C-CAN low) | ESC connector | 35 (C-CAN low) | Approx. below 1Ω | |
Good
- Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
- Repair or replace as necessary and then go to "Verification of Repair " procedure.
No Good
- Carefully re-do this troubleshooting guide steps.
- If no problems were found with the circuits or connectors, replace the HECU and then go to "Verification of Repair " procedure.