Tests AF
PINPOINT TEST AF: THE INTEGRATED CIRCUIT DISPLAY IS INOPERATIVETest AF1-AF4:
Test AF5-AF7:
Normal Operation
The integrated circuit display contains the odometer, trip odometer, outside air temperature and compass display on base clusters and the message center display on message center clusters. The compass module is hardwired to the instrument cluster through circuits 702 (WH/BK) and 703 (WH/OG), the outside air temperature sensor is hardwired to the instrument cluster through circuits 233 (DB/YE) and 234 (DB/WH). The odometer and trip odometer information is transmitted from the powertrain control module (PCM) through the standard corporate protocol (SCP) communication network to the instrument cluster, circuits 914 (TN/OG) and 915 (PK/LB).
Possible Causes
- 233 (DB/YE) open or short to ground
- 234 (DB/WH) open or short to ground
- outside air temperature sensor
- instrument cluster