Instrument Cluster Test 1A - Identifying Instrument Cluster Problems

NOTE: Perform SYMPTOM ID TEST 1A before proceeding with this test. For connector terminal identification and wiring diagrams, see appropriate sections in this article. Perform VERIFICATION 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 ELECTRO/MECHANICAL cluster. If scan tool displays NO RESPONSE, go to appropriate SYMPTOM ID TEST 1A - IDENTIFYING VEHICLE EQUIPMENT & SYSTEM PROBLEMS
NOTE: For connector terminal identification and wiring diagrams, go to appropriate section in this article. When directed to go to next step, disregard step if vehicle is not equipped with module being tested.

NOTE: Perform a visual inspection before proceeding with this test.
Connect scan tool to Data Link Connector (DLC). DLC is a 16-pin connector located on left side of steering column. Turn ignition switch to ON position. If scan tool display is not blank, go to next step. If scan tool display is blank, see appropriate VEHICLE COMMUNICATIONS article. If scan tool display is other than described, go to next step.
Using scan tool, select READ DTCs. If scan tool displays RAM TEST FAILURE or ROM TEST FAILURE, replace instrument cluster circuit board. Recalibrate gauges. If scan tool display is other than described, go to next step.
If scan tool displays BODY COMPUTER ODOMETER FAILURE, replace Body Control Module (BCM) "B" connector. BCM is located with junction block. See Figure in CHIME TEST 2A. If scan tool displays NO MESSAGES FROM BCM, NO MESSAGES FROM PCM or NO MESSAGES FROM TCM, go to appropriate SYMPTOM ID TEST 1A - IDENTIFYING VEHICLE EQUIPMENT & SYSTEM PROBLEMS
NOTE: For connector terminal identification and wiring diagrams, go to appropriate section in this article. When directed to go to next step, disregard step if vehicle is not equipped with module being tested.

NOTE: Perform a visual inspection before proceeding with this test.
Connect scan tool to Data Link Connector (DLC). DLC is a 16-pin connector located on left side of steering column. Turn ignition switch to ON position. If scan tool display is not blank, go to next step. If scan tool display is blank, see appropriate VEHICLE COMMUNICATIONS article. Go to next step.
Using scan tool, actuate gauges. If an individual gauge fails to operate, go to INSTRUMENT TEST 1B. Identify problem(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

One Gauge Not Operating Properly

Fuel Gauge

INSTRUMENT CLUSTER TEST 3A

Speedometer/Odometer

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⁾

⁽¹⁾	Using scan tool, read status of trip reset button switch (open or closed), and depress trip reset button. If status of trip reset button does not change, replace Mechanic Instrument Cluster (MIC).