Body Control System

B1034-INFRARED TEMPERATURE SENSOR INPUT CIRCUIT LOW

For a complete wiring diagram refer to Wiring Section.

WHEN MONITORED
With the ignition on.

SET CONDITION
If the Compass Temperature Module (EOM) detects a short to ground on the (C38) Infrared Sensor Signal circuit.

POSSIBLE CAUSES
- (C83)Infrared sensor signal circuit shorted to ground
- Infrared temperature sensor
- Compass temperature module (EOM)

Theory of Operation
The A/C Heater Control requires IR Sensor data to function in an automatic mode. The IR Sensor is hard wired to the Compass Temperature Module (EOM). The EOM broadcasts the IR Sensor data on the Controller Area Network (CAN) B Bus where it is received and then processed by the A/C Heater Control.

Diagnostic Test

1. PERFORM B1034-INFRARED TEMPERATURE SENSOR INPUT CIRCUIT LOW TEST

Repair
Perform test B1034-Infrared Temperature Sensor Input Circuit Low test. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test