Restraints - Except Advanced Air Bag Diagnostics

DTC B1031: Power Source Voltage High

Wiring Diagram:

Wiring Diagram

CAUTION:
- Be sure to perform Air Bag Diagnostic System Check:Except Advanced Air Bag before starting diagnosis according to flow. Air Bag Diagnostic System Check
- When measurement of resistance or voltage is required in this table, use a specified digital multimeter (Refer to Special Tool:Except Advanced Air Bag.) along with a correct terminal adapter from special tool (Connector test adapter kit).
- When a check for proper connection is required, refer to Inspection of Intermittents and Poor Connections:Except Advanced Air Bag. Inspection of Intermittent and Poor Connections
- If there is open circuit in the air bag wire harness, connector or terminal is found damaged, replace the wire harness, connector and terminal as an assembly.

DTC Will Set when
The power source voltage to SDM is above specified value for specified time.

Flow Test Description
STEP 1: Check if voltage applied to SDM is within normal range.
STEP 2: Check if DTC B1031 still exists.

Step 1 - 2:

DTC Troubleshooting