TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor.
0°C (32°F) Sensor Resistance = 29.33 - 35.99 kilohms
10°C (50°F) Sensor Resistance = 17.99 - 21.81 kilohms
20°C (68°F) Sensor Resistance = 11.37 - 13.61 kilohms
30°C (86°F) Sensor Resistance = 7.37 - 8.75 kilohms
40°C (104°F) Sensor Resistance = 4.90 - 5.75 kilohms
Does the Ambient Temperature Sensor measure within specifications?
All
Yes
→ Go To 5
No
→ Replace the Ambient Temperature Sensor in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Disconnect the IPM C1 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor Signal circuit to the
Sensor Return circuit.
Does the resistance measure less than 5.0 ohms?
All
Yes
→ Repair the Ambient Temperature Sensor Signal circuit for a short
to the Sensor Return circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 6
6
Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Disconnect the IPM C1 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor Signal circuit to ground.
Does the resistance measure less than 5.0 ohms?
All
Yes
→ Repair the Ambient Temperature Sensor Signal circuit for a short
to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 7
7
Turn the ignition off.
Disconnect the Ambient Temperature Sensor harness connector.
Disconnect the IPM C1 harness connector.
Check connectors - Clean/repair as necessary.
Measure the resistance of the Ambient Temperature Sensor Signal circuit.
Does the resistance measure less than 5.0 ohms?
All
Yes
→ Go To 8
No
→ Repair the Ambient Temperature Sensor Signal circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
752
OVERHEAD CONSOLE
*REPAIRING CMTC DISPLAYS DOUBLE DASH ( - - ) IN TEMP DISPLAY
—
Continued