B1234

DTC B1234 / B1238: Rear Side-Air Bag Circuit Shorted to Power Supply

DTC B1234: Rear Side-Air Bag Circuit Shorted to Power Supply (Driver Side)

DTC B1238: Rear Side-Air Bag Circuit Shorted to Power Supply (Passenger Side)

Wiring Diagram

Refer to B1061 DTC B1061 / B1065: Side Air Bag Circuit High Resistance:Advanced Air Bag.

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:Advanced Air Bag.

2. Floor harness circuit check

Remove applicable driver-side / passenger-side rear side-air bag (inflator) module. Referring to Removal and Installation Front Side-Air Bag (Inflator) Module Removal and Installation:Advanced Air Bag.
Disconnect SDM connector "L04".
Check for proper connection to applicable rear side-air bag (inflator) module at terminal in connector "L260" or "L261".
Check for proper connection to SDM connector at terminal "L04-23" and "L04-24" (for DTC B1234) or terminal "L04-25" and "L04-26" (for DTC B1238).
If OK, release shorting bar in SDM connector inserting release tool (1) included in special tool (A).
Special Tool

(A): 09932-76010

With ignition switch turned ON, measure voltage between "L04-23" terminal and body ground, and between "L04-24" terminal and body ground (for DTC B1234).
Measure voltage between "L04-25" terminal and body ground, and between "L04-26" terminal and body ground (for DTC B1238).






Is each measured voltage 0 V?
YES
Substitute a known-good SDM and recheck.
NO
DTC B1234: Repair "PPL/WHT" circuit or "PPL" circuit for short to power supply circuit at floor harness.
DTC B1238: Repair "BLU/RED" circuit or "BLK/RED" circuit for short to power supply circuit at floor harness.

NOTE:

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

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