Pontiac FIREBIRD 1972 Service Manual page 1284

12-14 1972 PONTIAC SERVICE MANUAL
TO BATTERY
+
--
"R"D1P-l
"HEADLIGHTS ON"
POSITION
FUSIBLE\
LINK
LIGHT SWITCH
L.H. HEADLIGHTS
(4 BEAM SYSTEM)
TYPE 2 TYPE 1
BULKHEAD
(OUTBOARD) (INBOARD) CONNECTOR
NOT USED I N
2 BEAM SYSTEM
BULKHEAD
CONNECTOR
r - 7
BLKlLT. GREEN-UPPER BEAM i T .
FOOT SWITCH
I
GREEN
FOR VOLTAGE CHECKS
12
VOLT TEST BULB BE' TWEEN
I B L K I T A N - L o w BEAM
-%
TAN
1
GROUND AND TEST POINT BEING
CHECKED
Tail fuse blown.
Loose connection.
Open wiring.
Defective directional signal switch
Defective light switch
*See cornering lamp circuit (Fig. 12-18).
Fig. 12-1 7 Headlight Circuit
BOTH LAMPS INOPERATIVE
*If tail lamps do not light, replace tail fuse
if blown. If new fuse blows, repair short to
ground between fuse and lamps.
*Secure connectors at light switch and steering
column.
column.
*If tail lamps light, check voltage at steering
column connector brown wire. If test bulb lights
on lamp side of connector only, repair terminal. If
tail lamps do not light, check for open wiring
between light switch and battery.
*If tail lamps light, and test bulb lights on
both sides of steering column connector, replace
directional signal switch.
*If tail lamps do not light and test bulb lights at
at light switch terminal # 5 but not at #4,
replace light switch.
TURN SIGNAL A N D HAZARD WARNING LAMPS DIAGNOSIS
TURN SIGNAL INOPERATIVE
-
ONE SIDE
CAUSE CORRECTION
Bulb out (flasher cannot be heard)
*Turn on hazard warning system. If one