Crown Victoria V8-4.6L SOHC VIN 6 (1996)
NO
REPLACE lighting control module. RESTORE vehicle. RETEST system.
EA - No Communication With Lighting Control Module
Pinpoint Test EA: No Communication With Lighting Control Module
EA1 - Check Circuit 195 (T/W) For Power
-
Disconnect lighting control module connector C3.
-
Using a voltmeter, measure for voltage at lighting control module connector pin C3-6, circuit 195 (T/W).
Is voltage B+?
YES
GO to EA5.
NO
GO to EA2.
EA2 - Check Circuit 195 (T/W) For Short To Ground
-
Remove fuse 4 (15A) from fuse junction panel.
-
Using an ohmmeter connected to ground, measure resistance at lighting control module connector pin C3-6, circuit 195 (T/W).
Is resistance less than 10K ohms?
YES
SERVICE circuit 195 (T/W) for short to ground. REPLACE fuse 4 (15A). RESTORE vehicle. RETEST system.
NO
GO to EA3.
EA3 - Check Supply To Fuse 4 (15A)
-
Remove fuse 4 (15A) from fuse junction panel.
-
Using a voltmeter, measure for voltage at fuse 4 input cavity.
-
Is voltage B+?
YES
GO to EA4.
NO
SERVICE supply to fuse 4 (15A) RESTORE vehicle. RETEST system.
EA4 - Check Circuit 195 (T/W) For Open
-
Using an ohmmeter, measure resistance of circuit 195 (T/W) between lighting control module connector pin C3-6 and output cavity of fuse 4
(15A).
Is resistance 5 ohms or less?
YES
REPLACE fuse 4 (15A). RESTORE vehicle. RETEST system.
NO
SERVICE circuit 195 (T/W) for open. RESTORE vehicle. RETEST system.
EA5 - Check Circuit 54 (LG/Y) For Power
-
Disconnect lighting control module connector C3.
-
Using a voltmeter, measure for voltage at lighting control module connector pin C3-11, circuit 54 (LG/Y).
Is voltage B+?
YES
GO to EA9.
NO
GO to EA6.
EA6 - Check Circuit 54 (LG/Y) For Short To Ground
-
Remove fuse 8 (15A) from fuse junction panel.
-
Using an ohmmeter connected to ground, measure resistance at lighting control module connector pin C3-11, circuit 54 (LG/Y).
Is resistance less than 10K ohms?
YES
SERVICE circuit 54 (LG/Y) for short to ground. REPLACE fuse 8 (15A). RESTORE vehicle. RETEST system.
NO
GO to EA7.
EA7 - Check Supply To fuse 8 (15A)
