Crown Victoria V8-4.6L SOHC VIN 6 (1996)
Symptom Chart - Parking Lamps
B1577 - Park Lamp Input Short To Battery (+)
DTC B1577: Park Lamp Input Short To Battery (+)
NOTE: Ford DOES NOT provide a procedure to perform the following pinpoint test without the Rotunda New Generation Star (NGS) tester
007-00500 or equivalent.
B1577-1 - Check Self Test
-
Turn headlamp switch OFF.
-
Repeat self test.
Is DTC 1577 retrieved during self test?
YES
GO to B1577-2.
NO
Headlamp switch was left in HEAD position during self test diagnostics. GO to next DTC.
B1577-2 - Check PID
-
Access and disconnect headlamp switch.
-
Access lighting control module PID PARK_SW.
Does PID indicate switch ON?
YES
GO to B1577-3.
NO
REPLACE headlamp switch. RESTORE vehicle. RETEST system.
B1577-3 - Check Circuit 1032 (W/BK)
-
Access and disconnect lighting control module connector C1.
-
Using a voltmeter connected to good ground, measure voltage at pin C1-13.
Is battery voltage present?
YES
SERVICE short to battery in circuit 1032 (W/BK). RESTORE vehicle. RETEST system.
