Pontiac Fiero 1988 Service Manual page 704

DRIVEABILITY AND EMISSIONS - FUEL INJECTION (PORT) 6E3-C8-7
CHART C-8B
MANUAL TRANSMISSION
(M/T) SHIFT LIGHT CHECK
2.8L "P" SERIES (PORT)
©
• IGNITION "ON", ENGINE STOPPED.
• NOTE SHIFT LIGHT.
©
©
LIGHT "OFF"
GROUND DIAGNOSTIC TERMINAL
AND NOTE LIGHT
LIGHT "OFF"
• IGNITION "OFF".
• DISCONNECT ECM CONNECTORS.
• IGNITION "ON"
• JUMPER CKT 456 TO GROUND
AND NOTE SHIFT LIGHT.
LIGHT "OFF"
LIGHT "ON"
1
CHECK FOR
- CODE 24 CHART (NO VSS)
- THERMOSTAT FAULTY OR
INCORRECT HEAT RANGE.
IF OK, REVIEW SYMPTOMS
IN SECTION "B".
LIGHT "ON"
LIGHT "ON"
I
• IGNITION "OFF"
• DISCONNECT ECM CONNECTORS.
• IGN. "ON" AND NOTE SHIFT LIGHT.
LIGHT "ON"
REPAIR SHORT TO
GROUND IN CKT 456.
1
LIGHT "OFF"
FAULTY ECM
SEE ECM QUAD
DRIVER CHECK
(CHART C-1)
CHECK AND REPAIR-
: - OPEN IGNITION CKT 39
- OPEN CKT 456
- FAULTY BULB
POOR CONNECTION AT
ECM OR FAULTY ECM.
SEE ECM QUAD DRIVER
CHECK (CHART C 1)
7-13-87
8S 4666 6E