Chrysler 1998 Voyager Service Manual page 348

8E - 12 INSTRUMENT PANEL AND SYSTEMS
DIAGNOSIS AND TESTING (Continued)
CONDITION
ERRATIC POINTER
MOVEMENT.
TEMPERATURE GAUGE
INACCURATE.
POSSIBLE CAUSES
1. Bad CCD Bus
Message from the Body
Control Module.
2. Internal Cluster Failure.
1. Temperature Gauge
Out of Calibration.
2. Coolant Sensor Out of
Calibration.
CORRECTION
1. (a) Check BCM fault codes using a scan tool. If
there are no faults, go to Step (b). If there are faults,
refer to the BCM section of the manual to properly
diagnose and repair.
(b) Check PCM fault codes using a scan tool. If there
are no faults, go to Step (c). If there are faults, refer to
the PCM section of the manual to properly diagnose
and repair.
(c) Refer to the coolant sensor section of the service
manual for the coolant sensor test procedure. Repair
sensor as needed.
2. (a) Perform Cluster Self Diagnostic Test and check
for fault codes.
• If the pointer moves during test but still appears
erratic and fault codes 110 or 111 don't appear in the
odometer display, go to Step (b).
• If fault code 110 is displayed in the odometer, go to
Step (e).
• If fault code 111 appears in the odometer display go
to Step (d).
• If fault code 920 or 940 is displayed refer to the fault
code chart to identify which mode is causing the fault
and repair module.
(b) Replace cluster subdial assembly. Go to Step (c).
(c) Connect cluster into instrument panel wiring
harness. Place it back into the proper position in the
instrument panel. DO NOT COMPLETELY INSTALL
CLUSTER TO INSTRUMENT PANEL UNTIL UNIT IS
CALIBRATED AND TESTED. Go to Step (d).
(d) Use a scan tool to calibrate cluster and perform Self
Diagnostic Test. If OK, continue installation. If not OK,
go Step (e).
(e) Replace main cluster pc board and use a scan tool
to calibrate cluster. If not OK, look at another possible
cause for the temperature gauge failure.
1. (a) Perform Cluster Self-Diagnostic Test.
• If pointer is accurate to the calibration points look for
another possible cause of failure.
• If pointer is inaccurate to the calibration points, go
the Step (b).
(b) Use a scan tool to calibrate temperature gauge.
2. Refer to the Cooling section of the service manual
for test and repair procedure.
NS