Pontiac FIREBIRD 1972 Service Manual page 1292

12-22 1972 PONTIAC SERVICE MANUAL
OIL PRESSURE INDICATOR
CAUSE
Oil light stays on run (if electrical failure).
Lamp does not come on during crank.
CORRECTION
Check sender unit for improper ground.
Check connection at bulkhead connector.
Check short from printed circuit to fuse block.
Check bulb.
Check for blown fuse.
Check for open in above circuits.
Check for open at printed circuit connector.
Check break in printed circuit.
TEMPERATURE WARNlNG LAMP
CAUSE CORRECTION
Temperature warning lamp stays on (if Check sender for abnormal ground.
electrical failure). Check for short between bulkhead and sender.
Check for short from bulkhead to printed circuit.
Temperature warning lamp inoperative during crank. Check bulb.
Check fuse.
Check for open in circuit.
Generator indicator. See Engine Electrical.
TEST LAMP DIAGNOSIS
FUSE
R.H. MARKER
R.H. MARKER LAMP
LAMP
HEADLAMP
SWITCH
p
FRONT
I I I I
I
FRONT
/
- - L _
-
L.H. MARKER
-
LAMP
1
BULKHEAD
CONNECTOR
CONNECTOR
GROUND
u
L.H. MARKER
-=-
LAMP
Fig. 12-24 Test Lamp Diagnosis