Instrument Cluster Test 1A - Identifying Instrument Cluster Problems
NOTE:
Perform INTERIOR LIGHT TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see CONNECTOR IDENTIFICATION in appropriate BODY CONTROL COMPUTER section in this article. For wiring diagrams, see WIRING DIAGRAMS at the end of article. Perform TEST VER-1A after each repair.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting or connecting any module connector.
- Turn ignition on. Using scan tool, select MIC CLUSTER. If scan tool displays BUS OPERATIONAL, go to next step. If scan tool displays any other message, see appropriate VEHICLE COMMUNICATIONS article.
- If scan tool displays, NO RESPONSE or Vacuum Fluorescent (VF) display is blank or displays NO BUS, see appropriate VEHICLE COMMUNICATIONS article. If scan tool display is other than described, go to next step.
- Using scan tool, select MIC CLUSTER and then select READ DTCs. If scan tool displays RAM FAULT, replace Mechanical Instrument Cluster (MIC). If scan tool display is other than described, go to next step.
- Using scan tool, select MIC CLUSTER and read cluster type. If cluster type matches vehicle equipment (US or Metric), go to next step. If cluster type does not match vehicle, replace MIC.
- Using scan tool, select BODY COMPUTER systems test. If PCM status is INATIVE ON THE BUS, see appropriate VEHICLE COMMUNICATIONS article. If scan tool display is other than described, go to next step.
- Identify problems(s) listed in INSTRUMENT CLUSTER DIAGNOSTIC TEST DIRECTORY table and perform indicated test(s).
INSTRUMENT CLUSTER DIAGNOSTIC TEST DIRECTORY
| Problem | Perform | |||
|---|---|---|---|---|
| All Gauges Do Not Operate | INSTRUMENT CLUSTER TEST 2A | |||
| Odometer Does Not Operate | Replace Odometer | |||
| One Gauge Not Operating Properly | ||||
| Fuel Gauge | INSTRUMENT CLUSTER TEST 3A | |||
| Speedometer | INSTRUMENT CLUSTER TEST 3B | |||
| Tachometer | INSTRUMENT CLUSTER TEST 3C | |||
| Temperature Gauge | INSTRUMENT CLUSTER TEST 3D | |||
| Identifying Warning Light Problems | INSTRUMENT CLUSTER TEST 4A | |||
| Cluster Illumination | INSTRUMENT CLUSTER TEST 5A | |||
| Gauges Not Going To Zero When Key Is Turned Off | INSTRUMENT CLUSTER TEST 6A | |||
| Trip Reset Button | (1) | |||
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