2. Release the parking brake, turn the ignition switch to ON (II), and see if the brake system light comes on for 2 seconds and then goes off.
Does the brake system light come on?
YES -
Go to step 3.
NO -
Faulty gauge control module. Do the gauge control module self-diagnostic function See: Instrument Panel, Gauges and Warning
Indicators/Instrument Cluster / Carrier/Testing and Inspection/Initial Inspection and Diagnostic Overview.
3. Clear the DTCs with the HDS.
4. Turn the ignition switch to ON (II), then wait for 10 seconds.
5. Check for DTCs with the HDS.
Is DTC 56-25 indicated?
YES -
Go to step 6.
NO -
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.?
6. Turn the ignition switch to LOCK (0).
7. Disconnect the negative cable from the battery, then wait at least 3 minutes.
8. Disconnect SRS unit connector A (39P) from the SRS unit.
9. Disconnect gauge control module connector A (12P) from the gauge control module See: Instrument Panel, Gauges and Warning
Indicators/Instrument Cluster / Carrier/Service and Repair.
10. Check for continuity between SRS unit connector A (39P) terminals No. 16 and No. 17 and gauge control module connector A (12P)
terminals No. 6 and No. 12.
