Test A: No Communication With Remote Anti-Theft Personality Module
- Turn ignition off. Check condition of central junction box ROOM fuse (10-amp) and RADIO fuse (5-amp). If fuses are okay, reinstall fuses and go to step 4
. If ROOM fuse is not okay, go to next step. If RADIO fuse is not okay, go to step 3
.
- Disconnect RAP module Gray, 22-pin connector C404 (located in luggage compartment, behind right trim panel on coupe and sedan, or located behind left rear quarter trim panel on wagon). Replace central junction box ROOM fuse (10-amp). Check condition of replaced ROOM fuse. If fuse is okay, replace RAP module and retest system operation. If fuse is not okay, repair short to ground in Blue/Red wire between central junction box ROOM fuse and RAP module. Retest system operation.
- Disconnect RAP module Gray, 26-pin connector C405 (located in luggage compartment, behind right trim panel on coupe and sedan, or located behind left rear quarter trim panel on wagon). Replace central junction box RADIO fuse (5-amp). Turn ignition on. Check condition of replaced fuse. If fuse is okay, replace RAP module and retest system operation. If fuses are not okay, repair short to ground in Blue/Black wire between central junction box and RAP module. Retest system operation.
- Turn ignition off. Disconnect RAP module Gray, 22-pin connector C404 (located in luggage compartment, behind right trim panel on coupe and sedan, or located behind left rear quarter trim panel on wagon). Using an ohmmeter, check resistance between ground and RAP module 22-pin connector C404 terminal No. 14 (Black wire). See Fig 1
. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Black wire between RAP module and ground. Retest system operation.
- Using a voltmeter, check voltage between ground and RAP module 22-pin connector C404 terminal No. 12 (Blue/Red wire). If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair Blue/Red wire between central junction box and RAP module. Retest system operation.
- Disconnect RAP module Gray, 26-pin connector C405. Turn ignition on. Using a voltmeter, check voltage between ground and RAP module 26-pin connector C405 terminal No. 25 (Blue/Black wire). See Fig 2
. If voltage is more than 10 volts, repair module communication concern. See appropriate
MODULE COMMUNICATIONS NETWORK article. If voltage is 10 volts or less, repair Blue/Black wire between central junction box and RAP module. Retest system operation.
Courtesy of FORD MOTOR CO.
Courtesy of FORD MOTOR CO.