LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chrysler >> 2002 >> Voyager EC >> Repair and Diagnosis >> Body & Frame >> Body, Cab Control Systems >> Body Control Modules >> System Tests >> Overhead Console >> CMTC Displays Double Dash (- -) In Temperature Display
April 5, 2026: LEMON Manuals is launched! Read the announcement.

CMTC Displays Double Dash (- -) In Temperature Display

NOTE: After making any repairs, perform BODY VERIFICATION TEST  under VERIFICATION TESTS.
  1. Turn ignition on. Using scan tool, select SYSTEM MONITORS then J1850 MODULE SCAN. If scan tool displays FCM ON THE BUS, go to next step. If scan tool does not display FCM ON THE BUS, go to NO RESPONSE FROM FRONT CONTROL MODULE  under COMMUNICATIONS.
  2. Using scan tool, select BODY, COMPASS MINI-TRIP, SYSTEM TESTS then AUTO SELF-TEST. If scan tool does not display TEST FAILED: BUS MESSAGE FAILURE, go to next step. If scan tool displays TEST FAILED: BUS MESSAGE FAILURE, go to PCI BUS COMMUNICATION FAILURE  under COMMUNICATIONS.
  3. If scan tool does not display TEST FAILED: INTERNAL EVIC FAILURE, go to next step. If scan tool displays TEST FAILED: INTERNAL EVIC FAILURE, replace EVIC in overhead console. See OVERHEAD CONSOLE  under REMOVAL & INSTALLATION.
  4. Turn ignition off. Disconnect ambient temperature sensor connector. Ambient temperature sensor is located on lower front frame cross brace behind bumper. Using DVOM, measure resistance of ambient temperature sensor. See AMBIENT TEMPERATURE RESISTANCE  table. Replace ambient temperature sensor if resistance is not within specification. If resistance is within specification, go to next step.
  5. Disconnect Intelligent Power Module (IPM) connector C1. See Figure. IPM is located in left front corner of engine compartment. Using DVOM, measure resistance between ambient temperature sensor connector terminals No. 1 (Violet/Light Green wire) and No. 2 (Violet/Brown wire). If resistance is greater than 5 ohms, go to next step. If resistance is 5 ohms or less, repair short between Violet/Light Green and Violet/Brown wires.
  6. Using DVOM, measure resistance between ground and ambient temperature sensor connector terminal No. 1 (Violet/Light Green wire). If resistance is greater than 5 ohms, go to next step. If resistance is 5 ohms or less, repair short to ground in Violet/Light Green wire.
  7. Using DVOM, measure resistance of Violet/Light Green wire between ambient temperature sensor connector terminal No. 1 and IPM connector C1 terminal No. 9. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Violet/Light Green wire.
  8. Using DVOM, measure resistance of Violet/Brown wire between ambient temperature sensor connector terminal No. 2 and IPM connector C1 terminal No. 18. If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, repair open in Violet/Brown wire.
  9. Disconnect negative battery cable. Remove Front Control Module (FCM) from IPM. See FRONT CONTROL MODULE  under REMOVAL & INSTALLATION. Using DVOM, measure resistance between IPM side of IPM connector C1 terminal No. 9 and FCM connector terminal No. 25. See Figure. Measure resistance between IPM side of IPM connector C1 terminal No. 18 and FCM connector terminal No. 18. If resistance is greater than 5 ohms for either circuit, replace IPM. If resistance is less than 5 ohms for both circuits, replace FCM.
AMBIENT TEMPERATURE RESISTANCE

Temperature - °F (°C) K/Ohms
0 (32) 29.33-35.99
10 (50) 17.99-21.81
20 (68) 11.37-13.61
30 (86) 7.37-8.75
40 (104) 4.90-5.75
scientia non olet · About LEMON Manuals