Dodge Ram 2004 Service Manual page 323

FCM - AMBIENT TEMP SENSOR INPUT OPEN —
TEST
3 Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Disconnect the IPM C3 harness connector.
Measure the resistance of the Sensor Ground circuit between the IPM C2 harness
connector and the Sensor harness connector.
Is the resistance above 5.0 ohms?
Yes → Repair the Ambient Temperature Sensor Return circuit for an
→ Go To 4
No
4 Turn the ignition off.
Disconnect the IPM C3 harness connector.
Disconnect the Ambient Temperature Sensor harness connector.
Measure the resistance of the Ambient Temperature Sensor Signal circuit between
the IPM C2 harness connector and the Sensor harness connector.
Is the resistance above 5.0 ohms?
Yes → Repair the Ambient Temperature Sensor Signal circuit for an
→ Replace the Front Control Module in accordance with the Service
No
ACTION
open.
Perform BODY VERIFICATION TEST - VER 1.
open.
Perform BODY VERIFICATION TEST - VER 1.
Information.
Perform BODY VERIFICATION TEST - VER 1.
COMPASS/MINI-TRIP COMPUTER
Continued
309
APPLICABILITY
All
All