GMC Chevrolet Camaro 1998 Service Manual page 806

8-564 Horns
Body and Accessories
Horns Inoperative (cont'd)
Step Action
Value(s) Yes No
1. Reconnect the horn relay.
2. Disconnect the horn.
(
5
3. Connect a test lamp from horn connector terminal A
-
to B+.
Does the test lamp light?
Go toBtep 6
Go to Step 13
1. Connect a test lamp from the horn connector
6
terminal B to ground.
-
2. Press the horn switch.
Does the test lamp light?
Go to Step 7 Go to Step 14
1. Inspect the horn for a poor connection.
7
2. If the connection is OK, replace the horn. Refer to
-
-
Horn Replacement.
Is the repair complete? System OK
Repair the open or the poor connection in CKT 1140
8
between UH electrical center 1 terminal E6 and Horn fuse.
-
-
Is the repair complete?
System OK
Repair the open or poor connection in CKT 1140 betweeh
9
UH electrical center 1 terminal E8 and 8168. -
-
Is the repair complete? System OK
1. Disconnect connector C216.
2. Connect a test lamp from UH electrical connector
10
center 1 terminal E6 to connector C216 terminal G
(steering column side).
-
3. Press the horn switch.
Does the test lamp light?
Go to Step 11 Go to Step 12
Repair the open or poor connection in CKT 28 between
(
11
connector C216 and UH electrical center 1.
-
-
Is the repair complete?
System OK
1. Test for an open in the BLK wires attached to the
horn brush slip ring.
2. Test for contact at the horn brush slip ring.
3. For Chevrolet only, inspect for a clean and tight
ground at the case of the horn switches.
12
4. For Pontiac only, inspect for a clean and tight
- -
connection at the inflater module.
5. If the above items are OK, replace the horn switches.
Refer to Horn Switch Replacement - On Vehicle
(Chevrolet) or Horn Switch Replacement - On Vehicle
(Pontiac).
Is the repair complete? System OK
Repair the open in CKT 250 between horn connector
13
terminal A and 8112.
-
-
Is the repair complete? System OK
Repair the open in CKT 29 between horn connector
14
terminal 8 and UH electrical center 1 terminal F6. -
-
Is the repair complete?
System OK
1. Inspect for a poor connection at the horn relay.
15
2. If the connection is OK, replace the relay. Refer to
-
-
Horn Relay Replacement.
Is the repair complete?
System OK
(