Speedometer And/Or Odometer Inoperative - GMC Chevrolet Camaro 1998 Service Manual

8-490 Instrument Panel, Gauges and Console Body and Accessories
Speedometer Inaccurate (J 38522 Available) (cont'd)
Step Action Value(s) Yes No
1. Connect a fused jumper from the PCM connector
circuit 817 to ground.
7
2. Connect a test lamp from the instrument cluster
-
(
connector circuit 817 to B+.
3. Does the test lamp light?
Go to Step B
Go to Step 9
1. Check circuit 817 for a poor connection at the
instrument cluster.
8
2. If the connection is OK, replace the instrument
- -
cluster. Refer to IP Cluster Replacement.
Is the repair complete? System OK
Repair the open or poor connection in circuit 817 between
9
the instrument cluster and the PCM.
-
-
Is the repair complete? System OK
Speedometer and/or Odometer Inoperative
Step
Action
Value(s) Yes
No
Did you inspect for Powertrain Control Module DTC's? Go to A
Powertrain On
Board Diagnostic
(080) System
1
-
Check (V6) or A
Powertrain On
Board Diagnostic
(080) System
Go to Step 2 Check (VB)
1. Disconnect the PCM.
2. Disconnect the instrument cluster.
2
3. Connect a DVM between the instrument cluster -
Go to Step 3 Go to Step 4
connector terminal 812 and the PCM connector C1
(
terminal 55.
Does the meter read less than 1 n?
Inspect for a poor connection at instrument cluster
Go to Instrument
3
terminal 812.
-
Cluster Go to Step 5
Did you repair a poor connection?
System Check
Repair the open in CKT 817 between the instrument
Go to Instrument
4
cluster and S242.
-
Cluster -
Is the repair complete?
System Check
Replace the instrument cluster. Refer to IP Cluster
Go to Instrument
5
Replacement.
-
Cluster
-
Is the repair complete?
System Check
(