Ignition Power Voltage Circuit (Voltage Too High/Low)

Voltage Too High/Too Low

The SRSCM measures the voltage at the ignition input to detect an operating voltage out of the normal operating range.

NOTE:
When the ignition voltage supply fuse (No. 12) is blown out, the Scan Tool cannot communicate with SRSCM, even though SRS SRI illuminates.

Symptom/Trouble Cause:

Inspection Procedure

Step 1. Check Power Source:

1. Turn ignition switch to LOCK position.
2. Check continuity between checker terminal and body ground.
Limit : Continuity
DAB + PAB : Terminal 13
DAB only : Terminal 10