1988 PONTIAC FIERO Service Repair Manual

3 PNK
Sy& 3 PNK F4
FOR DIGITAL CLUSTER
SEE INSTRUMENT PANEL:
DIGITAL CLUSTER FOR
PIN DESIGNATIONS

MULTI-PORT FUEL INJECTION: V6 VIN S
COMPONENT LOCATION
AIC Compressor Control Relay ..... LH rear corner of engine compartment, on relay
................................. bracket
AIR Select Valve (VIN S)
.......... Lower RN side of engine, behind AIR pump
Assembly Line Diagnostic Link
(ALDL) Connector
.............. On bottom of IIP hush panel, to right of steering
column
Brake Switch.
................... Above brake pedal, on brake pedal support .....
Canister Purge Solenoid Valve (VIN
............................ .. S) Lower RH front
corner of engine compartment
Cold Start Injector (VIN S)
........ Top LH rear of engine ......................
Cold Start Switch (VIN S) ......... Top of engine
Coolant Temperature Sensor (VIN S) Top LN front of intake manifold.
.............
Electronic Control Module (ECM) ... Behind RH side of IIP ......................
Electronic Spark Timing (EST)
......................... Distributor (VIN S) ............. Top rear of engine.
Electronic Vacuum Regulator Valve
(EVRV)
....................... TopRHrearofengine ......................
Fan Pressure Switch (VIN S) ....... Lower RH front of engine compartment, on AIC
line ....................................
Fuel Injectors ................... Top of engine, at each intake cylinder
Fuel Pump In-Line Fuse.
.......... RH side of engine compartment, on inner fender
panel
...................................
Fuel Pump Relay (VIN S) .......... LH rear corner of engine compartment, on relay
................................. bracket
Fuel Pump Switch (VIN S)
......... Lower LH side of engine ....................
Fuel Tank Unit .................. Top center of fuel tank ......................
Fuse Block. ..................... Behind LH side of IIP, below light switch. ......
Gear Selector Switch ............. In console, at base of gear selector ............
Idle Air Control Stepper Motor (VIN
S)
............................ Topcenterofengine ........................
Ignition Coil (VIN S). ............. Rear RH side of engine. .....................
Ignition Switch. ................. Behind IIP, on top side of steering column ......
Manifold Air Temperature (MAT)
................. Sensor (VIN S) RH front of engine compartment, on air cleaner
............................... assembly. Page-Figure

COMPONENT LOCATION Page-Figure
Mass Air Flow (MAF) Relay (VIN
S) . Front of engine compartment. on RH side of
radiator bracket
..........................
Mass Air Flow (MAF) Sensor (VIN S)
Front of engine compartment. on rear of
air ..............................
cleaner ..................................
Mass Air Flow In-Line Fuse ........ RH side of engine compartment. on inner fender
panel
...................................
Oxygen Sensor (VIN S) ........... Lower RH rear of engine. on exhaust manifold ..
Power Steering Switch ............ Lower LH front corner of engine compartment.
on steering unit
..........................
Throttle Position Sensor (VIN S) .... Top center of engine ........................
Vehicle Speed Sensor Buffer ....... Behind RW side of IIP. near ECM .............
.. ................ ClOO (42 cavities) LH front of dash. left of brake master cylinder
...... ............ C113 (1 cavity) (VIN S) Taped
to engine harness. RH front of dash
... ............ C114 (1 cavity) (VIN S) Taped to engine harness. above rear of engine
............ ................. C143 (1 cavity) (VIN S) Lower rear RH side of engine
.............. C204 (4 cavities) ................. Above LR rear corner of engine
............. C207 (15 cavities) ................ Behind RH side of IIP. near ECM
......................... C222 (4 cavities) ................. Top front of engine
.................... ................. C313 (3 cavities) Below center of back seat
.................... 6112 (VIN S) .................... Rear of LW cylinder head
.................... 6118 (VIN S) .................... Rear of RH cylinder head
6123
.......................... RH front corner of engine compartment. on inner
............................. fenderpanel
............ .......................... 6200 Behind IIP. left of steering column
6304
.......................... Under rear seat. on support bracket
....... .................... S104 (VIN S) Engine harness. lower RH side of engine
....... S142 (VIN S) .................... Engine harness. lower RH side of engine
........... S143 (VIN S) .................... Engine harness. center front of dash
.......... S145 (VIN S) .................... Engine harness. above rear of engine
.................... S146 (VIN S) Engine harness. behind RH side of IIP
S164 ........................... IIPharness. aboveFuseBlock ................
....... S166 (VIN S) .................... Engine harness. lower RH side of engine
S167
........................... Engine harness. behind RH side of IIP
............ S168 (VIN S) .................... Engine harness. top rear of engine
S169
........................... Engine harness. behind RN side of IIP
S170 ........................... Engine harness. behind RH side of IIP

MULTI-PORT FUEL INJECTION: V6 VIN S
COMPONENT LOCATION Page-Figure
S175 (VIN S) .................... Engine harness, lower LN front of dash ........ 201- 0-A
S176
(VIN S) .................... Engine harness, behind RN side of IIP
S180 (VIN S) .................... Injector harness, top of engine
S181. .......................... Injector harness, top of engine
S182. .......................... Injector harness, top of engine
S183. .......................... Injector harness, top of engine
S202. .......................... IIP harness, behind RH side of IIP ............ 201-13-A
$204.
.......................... IIP harness, behind instrument cluster. ........ 201-10-A
S205. .......................... IIP harness, behind instrument cluster. ........ 201-10-A
$217.
.......................... IIP harness, behind center of IIP .............. 201-10-A
S242. .......................... IIP harness, behind RR side of IIP ............ 201-13-A
S276. .......................... IIP harness, behind RN side of IIP ............ 201-13-A
S346. .......................... Speaker harness, behind RH side of rear seat. ... 201- 9-B

ELECTRONlC CONTROL MODULE CONNECTORS
C2 BLK

TUNED PORT INJECTION: V8 VIN F
IDLE SPEED CONTROL, FUEL CONTROL, AND VEHICLE DATA SENSORS