Instrument Cluster Test 7A - Oil Pressure Gauge Not Operating Properly
NOTE:
Perform INSTRUMENT CLUSTER TEST 1A
before proceeding with this test. For connector terminal identification, refer to CONNECTOR IDENTIFICATION
. For wiring diagrams, refer to WIRING DIAGRAMS
. Refer to INSTRUMENT PANEL
article. After each repair, perform TEST VER-1A
.
CAUTION:
Always turn ignition switch to OFF position prior to disconnecting any module connector. Ensure all connectors are clean and tight.
- Using scan tool, select PCM SENSORS. Read oil pressure gauge status. If scan tool displays OPEN CKT or SHORT SENS, repair open in oil pressure sending sensor. If scan tool does not display OPEN CKT or SHORT SENS, go to next step.
- Using scan tool, select MIC CLUSTER menu. Actuate oil pressure gauge. If oil pressure gauge moves to it's calibration points, replace Powertrain Control Module (PCM). PCM is located in engine compartment, next to power distribution center. See GAUGE CALIBRATION POINTS table under INSTRUMENT CLUSTER TEST 2A. If oil pressure gauge does not move to it's calibration points, go to next step.
- Remove instrument cluster. Loosen screws holding oil pressure gauge to circuit board. Ensure screws do not touch circuit board. Using an ohmmeter, measure resistance across oil pressure gauge coils No. 1 and 2. See Fig 1 . If resistance across each coil is about 280 ohms, replace circuit board. If resistance across each coil is not about 280 ohms, replace oil pressure gauge.