Circuit Inspection
Squib Circuit Inspection
NOTE:
If dummy and dummy adaptor are not able to be prepared, use a 2Ω resistor.
- Ignition "OFF".
- Disconnect the auxiliary battery (-) cable and wait for 5 minute or more.
- Remove the PSAB module and connect the dummy and dummy adapter to the PSAB module connector.
- Connect the auxiliary battery (-) cable and ignition "ON" and wait for 30s or more.
- Connect KDS to Data Link Connector (DLC) and clear DTC with KDS and diagnose again.
- Are any DTCs stored in the system?
Good
- Go to "Main Harness Circuit Inspection" procedure.
No Good
- If no problems were found with the circuits or connectors, replace the PSAB module and go to "Verification of Repair " procedure.
| Main Harness Circuit Inspection | ||||||
|---|---|---|---|---|---|---|
| Inspection Item | Inspection Condition | (+) Probe | (-) Probe | Specification | ||
| Connector | Terminal | Connector | Terminal | |||
| Open in circuit inspection (PSAB ↔ SRSCM) |
|
PSAB connector | 1 (high) | SRSCM connector | 22 (high) | Approx. below 1Ω |
| PSAB connector | 2 (low) | SRSCM connector | 21 (low) | Approx. below 1Ω | ||
| Short in circuit inspection (PSAB ↔ Chassis ground) |
|
PSAB connector | 1 (high) | Chassis ground | - | ∞ (infinity)Ω |
| PSAB connector | 2 (low) | Chassis ground | - | ∞ (infinity)Ω | ||
| Oscilloscope (PSAB) |
|
PSAB connector | 1 (high) | Chassis ground | - | Fig.1 |
| PSAB connector | 2 (low) | Chassis ground | - | |||
Good
- Carefully re-do this troubleshooting guide steps.
- If problem still occurs, replace SRSCM and then go to "Verification of Repair " procedure.
No Good
- Carefully re-do this troubleshooting guide steps.
- If problem still occurs, replace SRSCM main harness and then go to "Verification of Repair " procedure.