Driver Forward Impact Sensor Circuit Shorted to Ground

DTC B1073: Driver Forward Impact Sensor Circuit Shorted to Ground

Wiring Diagram










DTC Detecting Condition and Trouble Area






DTC Troubleshooting

1.
Was "Air Bag Diagnostic System Check Flow" performed?
YES -
Go to Step 2.
NO -
Go to Air Bag Diagnostic System Check Flow Air Bag Diagnostic System Check Flow:Except Advanced Air Bag.

2. Forward impact-sensor circuit check

Disconnect forward impact-sensor connector "E40".
Disconnect SDM connector "L04".
Check for proper connection to SDM connector at terminals "L04-50" and "L04-51".
Measure resistance between "L04-50" terminal and body ground.
Special Tool

(A): 09932-76010





Is each measured resistance infinity?
YES -
Go to Step 3.
NO -
Repair short to ground in defective circuit.

3. Forward impact-sensor circuit check

Measure resistance between "L04-50" and "L04-51" terminals.
Special Tool

(A): 09932-76010





Is each measured resistance infinity?
YES -
Replace defective forward impact-sensor, and recheck.
If this DTC is still detected, replace SDM.
NO -
Repair short to ground in defective circuit.

NOTE:

Upon completion of inspection and repair work, perform the following items.

- Reconnect all air bag system components and ensure all components are properly mounted.
- Clear DTCs referring to DTC Clearance DTC Clearance:Except Advanced Air Bag
, if any.
- Repeat Air Bag Diagnostic System Check Air Bag Diagnostic System Check:Except Advanced Air Bag
to confirm that the trouble has been corrected.