Circuit/System Testing

IMPORTANT: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.

The pretensioner
The air bag module
The SDM module
The air bag wiring harness connector
The SDM wiring harness connector

Ignition OFF, disconnect the harness connector at the appropriate air bag module. Refer to the appropriate air bag module replacement procedure.
Ignition ON, test for less than 1 volt between the appropriate high control circuit terminal and ground.
- I/P Module - Stage 1 terminal A
- Left Front Roof Rail Module terminal B
- Right Front Roof Rail Module terminal B
- Left Rear Roof Rail terminal B
- Right Rear Roof Rail Module terminal B
- Seat Belt Pretensioner - Left terminal 2
- Seat Belt Pretensioner - Right terminal 2
- If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the SDM.
Test for less than 1 volt between the appropriate low control circuit terminal and ground.
- I/P Module - Stage 1 terminal B
- Left Front Roof Rail Module terminal A
- Right Front Roof Rail Module terminal A
- Left Rear Roof Rail Module terminal A
- Right Rear Roof Rail Module terminal A
- Seat Belt Pretensioner - Left terminal 1
- Seat Belt Pretensioner - Right terminal 1
- If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the SDM.
Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal and ground.
- I/P Module - Stage 1 terminal A
- Left Front Roof Rail Module terminal B
- Right Front Roof Rail Module terminal B
- Left Rear Roof Rail terminal B
- Right Rear Roof Rail Module terminal B
- Seat Belt Pretensioner - Left terminal 2
- Seat Belt Pretensioner - Right terminal 2
- If not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the SDM.
Test for infinite resistance between the appropriate low control circuit terminal and ground.
- I/P Module - Stage 1 terminal B
- Left Front Roof Rail Module terminal A
- Right Front Roof Rail Module terminal A
- Left Rear Roof Rail Module terminal A
- Right Rear Roof Rail Module terminal A
- Seat Belt Pretensioner - Left terminal 1
- Seat Belt Pretensioner - Right terminal 1
- If not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the SDM.
With the appropriate adaptor, connect J 38715-A in place of the air bag module.
Ignition ON, verify the DTC is set as current.
- If DTC is not set or is set as history, replace the appropriate air bag module.
Ignition OFF, disconnect J 38715-A and the appropriate adaptor.
Disconnect the harness connector at the SDM.
Test for less then 1 ohm between the following high control circuit terminals.
- I/P Module - Stage 1 terminal A and SDM terminal 10
- Left Front Roof Rail Module terminal B and SDM terminal 13
- Right Front Roof Rail Module terminal B and SDM terminal 14
- Left Rear Roof Rail Module terminal B and SDM terminal 21
- Right Rear Roof Rail Module terminal B and SDM terminal 22
- Seat Belt Pretensioner - Left terminal 2 and SDM terminal 17
- Seat Belt Pretensioner - Right terminal 2 and SDM terminal 18
- If not within the specified range, test the circuit for an open/high resistance.
Test for less then 1 ohm between the following low control circuit terminals.
- I/P Module - Stage 1 terminal B and SDM terminal 11
- Left Front Roof Rail Module terminal A and SDM terminal 12
- Right Front Roof Rail Module terminal A and SDM terminal 15
- Left Rear Roof Rail Module terminal A and SDM terminal 20
- Right Rear Roof Rail Module terminal A and SDM terminal 23
- Seat Belt Pretensioner - Left terminal 1 and SDM terminal 16
- Seat Belt Pretensioner - Right terminal 1 and SDM terminal 19
- If not within the specified range, test the circuit for an open/high resistance.
If all circuits test normal, replace the SDM.