DTC B0070[11] Pretensioner(Front Right) Circuit Short to GND (Air Bag (Driver/Passenger/Side/Roof/Knee/Far Side))

1. SRS system check

Refer to "58.SRS Control 8A.Troubleshooting(Air Bag (Driver/Passenger/Side/Roof/Knee/Far Side)) 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 B0070[11] being set as a current failure. Is a DTC set?

Yes (Except extend cab models)

=>Go to Front right side pretensioner circuit check.

Yes (Extend cab models)

=>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 (H38) is securely connected. Is the intermediate harness connector (H38) securely connected?

Refer to "LHD SRS airbag (Driver/Passenger/Side/Curtain/Knee)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD SRS airbag (Driver/Passenger/Side/Curtain/Knee)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD SRS airbag (Driver/Passenger/Side/Curtain/Knee/Far Side)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to Front right side pretensioner circuit check.

No

Securely connect the intermediate harness connector (H38).

=>Go to Repair verification.

4. Front right side pretensioner circuit check

1) Turn OFF the ignition switch for 15 seconds or more.

2) Disconnect the front right side pretensioner harness connector (R18 or D28).

3) Connect the SRS alternative load and the appropriate adapter from the adapter harness kit to the front right side pretensioner harness connector (R18 or D28).

Refer to "LHD SRS airbag (Driver/Passenger/Side/Curtain/Knee)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD SRS airbag (Driver/Passenger/Side/Curtain/Knee)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD SRS airbag (Driver/Passenger/Side/Curtain/Knee/Far Side)" 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

4) Turn ON the ignition switch.

5) Observe the DTC information with a scan tool for DTC B0070[11] being set as a current failure. Is a DTC set?

Yes

=>Go to Inspection for short to ground in front right side pretensioner ignition current output (High) circuit.

No

Replace the front right side seat belt with pretensioner.

Refer to "8.Restraints 8C.Seat Belt Systems front tongue side seat belt (with pretensioner) (regular cab) removal".

Refer to "8.Restraints 8C.Seat Belt Systems front tongue side seat belt (with pretensioner) (regular cab) installation".

Refer to "8.Restraints 8C.Seat Belt Systems front tongue side seat belt (with pretensioner) (crew cab) removal".

Refer to "8.Restraints 8C.Seat Belt Systems front tongue side seat belt (with pretensioner) (crew cab) installation".

Refer to "8.Restraints 8C.Seat Belt Systems front tongue side seat belt (with pretensioner) (extend cab) removal".

Refer to "8.Restraints 8C.Seat Belt Systems front tongue side seat belt (with pretensioner) (extend cab) installation".

=>Go to Repair verification.

5. Inspection for short to ground in front right side pretensioner ignition current output (High) circuit

1) Turn OFF the ignition switch for 15 seconds or more.

2) Inspect the front right side pretensioner ignition current output (High) circuit between the SRS control unit (pin 9 of R6) and the front right side pretensioner (pin 2 of R18 or D28) for a short to ground. Is the result normal?

Refer to "LHD SRS airbag (Driver/Passenger/Side/Curtain/Knee)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD SRS airbag (Driver/Passenger/Side/Curtain/Knee)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD SRS airbag (Driver/Passenger/Side/Curtain/Knee/Far Side)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to Inspection for short circuit in front right side pretensioner ignition current output (Low) circuit.

No

Repair the circuit as necessary.

=>Go to Repair verification.

6. Inspection for short circuit in front right side pretensioner ignition current output (Low) circuit

1) Inspect the front right side pretensioner ignition current output (Low) circuit between the SRS control unit (pin 8 of R6) and the front right side pretensioner (pin 1 of R18 or D28) for a short to ground. Is the result normal?

Refer to "LHD SRS airbag (Driver/Passenger/Side/Curtain/Knee)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD SRS airbag (Driver/Passenger/Side/Curtain/Knee)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Refer to "RHD SRS airbag (Driver/Passenger/Side/Curtain/Knee/Far Side)" in the ETM (wiring diagram). (Open using the ETM viewer.).

Yes

=>Go to SRS control unit replacement.

No

Repair the circuit as necessary.

=>Go to Repair verification.

7. SRS control unit replacement

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

=>Go to Repair verification.

8. 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.