Chrysler 1998 Voyager Service Manual page 341

NS
DIAGNOSIS AND TESTING (Continued)
CONDITION
ERRATIC POINTER
MOVEMENT
POSSIBLE CAUSES
1. Erratic Message from
another Module.
2. Internal Cluster Failure.
INSTRUMENT PANEL AND SYSTEMS
CORRECTION
1. (a) Check the BCM using a scan tool If OK, go to
Step (b). If not OK, refer to the BCM section of the
service manual to repair the BCM.
(b) Check the PCM using a scan tool. If OK, go to Step
(c). If not OK, refer to the PCM section of the service
manual to repair the PCM.
(c) Check the speed signal input into the PCM. The
speed signal originates from one of the following
sources:
• A distance sensor for vehicles with 3 speed automatic
transmission. Check continuity from distance sensor to
PCM. If OK, replace distance sensor. If not OK, repair
wiring.
• The Electronic Transmission Control Module (TCM)
vehicles with the 4 speed electronic transmissions.
Check continuity from TCM to engine controller. If OK,
use a scan tool to check TCM. Refer to the electronic
section of the service manual to repair the TCM. If not
OK, repair wiring.
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, then 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 codes 905, 920, or 940 are displayed in the
odometer display refer to the fault code chart to identify
which module is causing the fault and repair module.
(b) Replace cluster subdial assembly. To Step (c).
(c) Connect cluster into instrument panel wiring
harness. Place it back into the proper position in the
instrument panel. Put in the top two mounting screws to
hold the cluster in place. 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 to Step (e).
Replace main cluster pc board and use a scan tool to
calibrate cluster. If not OK, look at another possible
cause for the speedometer failure.
8E - 5