GMC Chevrolet Camaro 1998 Service Manual page 699

Body and Accessories Body Control System s..:457
DTC 25/35 Security Indicator Status
Step Action Value(s) Yes No
Important:
• Perform this diagnostic when OTC 25/35 is not set or if the LED is not functioning.
• Do not use a battery or test light to test the security indicator LED or the LED may be damaged.
1. Disconnect the security indicator LEO.
1
2. Connect a test lamp between the security LED
-
connector terminal A and B+.
Does the test lamp light? Go to Step 2 Go to Step 3
Using a DMM set to the diode scale, connect the .red test
2
lead to terminal B. of the security LED and the black test
-
lead to terminal A.
Does the security LED illuminate? Go to Step 4 Go to Step 5
Repair the open in CKT 650 between $217 anq the
3
security LED.
-
-
Is the repair complete? System OK
1. Test for a poor connection in CKT 1376 between the
body control module (BCM) and the security LED.
4
2. If the circuit is OK, replace the BCM. Refer to Body
- -
Control Module Replacement.
Is the repair complete? System OK
1. Replace the security LED.
5
2. Disconnect the vehicle battery.
-
-
3. Reconnect the vehicle battery.
Is the repair complete? System OK