Restraint Systems

TROUBLE CODE 31





FLOWCHART

Possible Diagnosis:
- Airbag control module is faulty.
- Airbag main harness circuit is open.
- Fuse No.16 is blown.
- Body harness circuit is open.

CAUTION: Before performing diagnostics on airbag system, turn ignition switch "OFF", disconnect battery ground cable, and then wait at least 20 seconds. After 20 seconds elapse, remove instrument panel lower cover, and disconnect (AB3) and (AB8).

1. AIRBAG CONTROL MODULE INSPECTION





1) Disconnect connector (AB6) from airbag control module and connect it to test harness B connector (8B).
2) Connect battery ground cable and turn ignition switch "ON" (engine off).
3) Measure voltage across connector (5B) terminal and ground.

(5B) Terminal / Specified voltage:
No.5 - Body / 10 V, or more

2. AIRBAG MAIN HARNESS INSPECTION





1) Go to step 2) below after performing diagnostics on airbag system as per flowchart under "1. AIRBAG CONTROL MODULE INSPECTION" previously outlined.
2) Turn ignition switch "OFF", disconnect battery ground cable and then wait at least 20 seconds.
3) Disconnect connector (AB1) from body harness connector (B58) at front lower pillar, and connect connector (AB1) to test harness A connector (2A).
4) Measure resistance between test harness A connector (5A) and test harness B connector (5B) terminals.

Connector & terminal / Specified resistance:
(5A) No.9 - (5B) No.5 /10 Ohms, or less

5) Measure resistance between each terminal of connectors (5A) and (5B) and ground.

(5A) Terminal / Specified resistance:
No.9 - Body /10 K Ohms or more

(5B) Terminal / Specified resistance:
No.5 - Body /10 K Ohms or more

3. FUSE No.16 INSPECTION





Make sure ignition switch is turned "OFF", then remove and visually check fuse No.16.