Test 42A - Electro/Mechanical Instrument Cluster Diagnostics
NOTE:
For connector terminal identification, see CONNECTOR IDENTIFICATION
. For appropriate wiring diagram, see WIRING DIAGRAMS
section at the end of this article. Perform TEST VER-1B after each repair.
CAUTION:
Always turn ignition off prior to disconnecting or connecting any module connector.
NOTE:
Electro/Mechanical Instrument Cluster (MIC) is an electronic cluster receiving information from CCD link and displaying information in analog gauges. These test procedures cover both base and premium MIC.
- If all MIC gauges are inoperative, go to TEST 54A. Using scan tool, read instrument cluster I.D. status. If scan tool displays EIC/US, go to TEST 43A. If all gauges are inaccurate or erratic, go to TEST 46A. If some gauges are operating, if scan tool does not display EIC/US, and/or some gauges are accurate and not erratic, go to next step.
- MIC diagnostics are separated into 5 categories. Verify customer complaint and identify problem area before performing appropriate test. See INSTRUMENT CLUSTER PROBLEM DIRECTORY table below.
INSTRUMENT CLUSTER PROBLEM DIRECTORY
| Problem | Perform TEST | |
|---|---|---|
| Defective Gauge | 44A | |
| Defective Speedometer Or Odometer | 48A | |
| Improper Cluster Illumination | 38A | |
| Defective Warning Lamps | ||
| Premium MIC | 49A | |
| Base MIC | 50A | |