1. SRS system check
Refer to "58.SRS Control 8A.Troubleshooting(Air Bag (Driver/Passenger)) diagnostic system check-SRS controls".
2. Current DTC check
1) Clear the DTC with a scan tool.
2) Turn OFF the ignition switch for 15 seconds or more.
3) Turn ON the ignition switch.
4) Observe the DTC information with a scan tool for DTC B0010[11] being set as a current failure. Is a DTC set?
Yes
=>Go to Intermediate harness connector connection check.
No
Go to Intermittent conditions of SRS control.
Refer to "209.Restraints 22D.Symptom Intermittent conditions of SRS control".
3. Intermediate harness connector connection check
1) Turn OFF the ignition switch for 15 seconds or more.
2) Verify that the intermediate harness connector (H28) is securely connected. Is the intermediate harness connector (H28) securely connected?
Refer to "LHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to Passenger airbag circuit check.
No
Securely connect the intermediate harness connector (H28).
4. Passenger airbag circuit check
1) Turn OFF the ignition switch for 15 seconds or more.
2) Disconnect the intermediate harness connector (H28).
3) Connect the SRS alternative load and the SRS adapter for load tool to the intermediate harness connector (H28) on the SRS control unit side.
Refer to "LHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
SST: 5-8840-3257-0 - SRS adapter for load tool
SST: 5-8840-2856-0 - SRS alternative load
4) Turn ON the ignition switch.
5) Observe the DTC information with a scan tool for DTC B0011[11] being set as a current failure. Is a DTC set?
Yes
=>Go to Inspection for short to ground in passenger airbag deployment current output (High) circuit.
No
=>Go to Passenger airbag check.
5. Inspection for short to ground in passenger airbag deployment current output (High) circuit
1) Turn OFF the ignition switch for 15 seconds or more.
2) Inspect the passenger airbag deployment current output (High) circuit between the SRS control unit (pin 26 of B8) and the intermediate harness (pin 3 of H28) for a short to ground. Is the result normal?
Refer to "LHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to Inspection for short to ground in passenger airbag deployment current output (Low) circuit.
No
Repair the circuit as necessary.
6. Inspection for short to ground in passenger airbag deployment current output (Low) circuit
1) Inspect the passenger airbag deployment current output (Low) circuit between the SRS control unit (pin 25 of B8) and the intermediate harness (pin 2 of H28) for a short to ground. Is the result normal?
Refer to "LHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to SRS control unit replacement.
No
Repair the circuit as necessary.
7. Passenger airbag check
1) Turn OFF the ignition switch for 15 seconds or more.
2) Remove the SRS alternative load and the adapter.
3) Connect the intermediate harness connector (H28).
4) Remove the passenger airbag.
Refer to "8.Restraints 8B.Airbag Systems passenger airbag removal".
5) Connect the SRS alternative load and the appropriate adapter from the adapter harness kit to the passenger airbag harness connector (B75).
Refer to "LHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD SRS airbag (Driver/Passenger)" in the ETM (wiring diagram). (Open using the ETM viewer.).
SST: 5-8840-2857-0 - adapter harness kit
SST: 5-8840-2856-0 - SRS alternative load
6) Turn ON the ignition switch.
7) Observe the DTC information with a scan tool for DTC B0010[11] being set as a current failure. Is a DTC set?
Yes
Repair the circuit or replace the intermediate harness as necessary.
No
Replace the passenger airbag.
Refer to "8.Restraints 8B.Airbag Systems passenger airbag removal".
Refer to "8.Restraints 8B.Airbag Systems passenger airbag installation".
8. SRS control unit replacement
Note
- Perform the VIN programming and ECU lock after replacing the SRS control unit.
Refer to "8.Restraints 8Z.Seat Belt and SRS Airbag Electrical Control SRS control unit removal".
Refer to "8.Restraints 8Z.Seat Belt and SRS Airbag Electrical Control SRS control unit installation".
Refer to "8.Restraints 8Z.Seat Belt and SRS Airbag Electrical Control SRS control unit setting".
Procedure completion
9. Repair verification
1) Reconnect all of the disconnected harness connectors.
2) Clear the DTC with a scan tool.
3) Turn OFF the ignition switch for 15 seconds or more.
4) Turn ON the ignition switch.
5) Observe the DTC information with a scan tool.