Circuit Inspection
| Inspection Condition | (+) Probe | (-) Probe | Specification | ||
|---|---|---|---|---|---|
| Connector | Terminal | Connector | Terminal | ||
|
IBU connector | 9 (P-CAN high) | Chassis ground | - | Fig.1 |
| IBU connector | 8 (P-CAN low) | Chassis ground | - | ||
|
IBU connector | 9 (P-CAN high) | Chassis ground | - | ∞ (infinity)Ω |
| IBU connector | 8 (P-CAN low) | Chassis ground | - | ∞ (infinity)Ω | |
| IBU connector | 9 (P-CAN high) | ECM (component side) | 77 (P-CAN high) | Approx. below 1Ω | |
| IBU connector | 8 (P-CAN low) | ECM (component side) | 60 (P-CAN low) | Approx. below 1Ω | |
| IBU connector | 9 (P-CAN high) | ICU connector | 22 (P-CAN high) | Approx. below 1Ω | |
| IBU connector | 8 (P-CAN low) | ICU connector | 23 (P-CAN low) | Approx. below 1Ω | |
| IBU connector | 9 (P-CAN high) | IBU connector | 8 (P-CAN low) | Approx. 60Ω | |
| ICU (component side) | 22 (P-CAN high) | ICU (component side) | 23 (P-CAN low) | Approx. 120Ω | |
| ECM (component side) | 77 (P-CAN high) | ECM (component side) | 60 (P-CAN low) | Approx. 120Ω | |
Good
- Fault is intermittent caused by poor contact in TPMS's connector or was repaired and IBU memory was not cleared.
- Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
- Repair or replace as necessary, Go to "VERIFICATION OF REPAIR " procedure.
No Good
- Carefully re-do this troubleshooting guide steps.
- Repair as necessary and then Go to "VERIFICATION OF REPAIR " procedure.
- If no problems were found with the circuits or connectors, replace HECU and then Go to "VERIFICATION OF REPAIR " procedure.