Pontiac Fiero 1988 Service Manual page 568

DRIVEABILITY AND EMISSIONS - FUEL INJECTION (TBS) 6E2-0>7
CHART C-8B
MANUAL TRANSMISSION (M/T)
SHIFT LIGHT CHECK
2.5L "P" SERIES (TBI)
©
©
©
• IGNITION " O N " , ENGINE STOPPED.
© NOTE SHIFT LIGHT.
LIGHT " O F F "
© GROUND DIAGNOSTIC TERMINAL
AND NOTE LIGHT.
LIGHT " O F F "
• IGNITION " O F F "
• DISCONNECT ECM CONNECTORS
« IGNITION " O N "
JUMPER CKT 456 TO GROUND
AND NOTE SHIFT LIGHT.
LIGHT " O F F "
1_
LIGHT " O N "
C H E C K F O R :
- CODE 24 CHART (NO VSS)
- THERMOSTAT FAULTY OR
INCORRECT HEAT RANGE.
IF OK, REVIEW SYMPTOMS
IN SECTION B
1
LIGHT " O N "
LIGHT "ON"
« IGNITION " O F F "
• DISCONNECT ECM CONNECTORS
© IGN. " O N " AND NOTE SHIFT LIGHT
LIGHT " O N "
1
LIGHT " O F F "
REPAIR SHORT TO
GROUND IN CKT 456.
FAULTY E C M
CHECK AND REPAIR:
- OPEN IGNITION CKT 39
- OPEN CKT 456
- FAULTY BULB
POOR CONNECTION AT
ECM OR FAULTY ECM .
* 6S 2736-6EA
5-19-86