1988 PONTIAC FIERO Service Repair Manual

MULTI-PORT FUEL INJECTION: V8 VIN 8 It
COMPONENT LOCATION Page-Figure
. ............ AIR Diverter Valve (VIN F) (VIN 8)
RN front of engine. on valve cover 201- 6-A
............ AIR Select Valve (VIN F) (VIN 8) ... RW front of engine. on valve cover 201- 6-A
Assembly Line Diagnostic Link
(ALDL) Connector
.............. On bottom of I/P hush panel. to right of steering
column
..... Brake Switch .................... Above brake pedal. on brake pedal support 201- 9-A
Burn-Off Relay
.................. LH rear corner of engine compartment. on relay
bracket
................................. 201- 7-A
Canister Purge Solenoid Valve (VIN
.. F) (VIN 8) ..................... Lower RH front corner of engine compartment 201- 5-A'
.. ...................... Cold Start Injector (VIN F) (VIN 8) Top LH side of engine 201- 7-A
........................ Cold Start Switch (VIN F) (VIN 8) ... Top center of engine 201- 8-6
Coolant Temperature Sensor (VIN F)
...................... (VIN 8) ........................ Top LN front of engine 201- 8-C
Detonation Sensor (VIN F) (VIN 8)
. . Lower RN side of engine. above Starter Solenoid 201- 5-A
EGR Vacuum Sensor Diagnostic
.......................... Connector ..................... Top rear of engine 201- 4-E
...................... Electronic Control Module (ECM) ... Behind RH side of IIP 201-12-B
Electronic Spark Control (ESC)
Module (VIN F) (VIN 8)
.......... LH rear corner of engine compartment. on relay
bracket
................................. 201- 7-A
Electronic Spark Timing (EST)
.......................... Distributor (VIN F) (VIN 8) ....... Top rear of engine 201- 5-A
Exhaust Gas Recirculation (EGR)
............... Solenoid (VIN F) (VIN 8) ......... Top RN rear of intake manifold 201- 5-A
Fuel Injectors
................... Top of engine. at each intake cylinder
Fuel Pump Relay (VIN F) (VIN 8)
... LH rear corner of engine compartment. on relay
bracket
................................. 201- 7-A
.. ................... Fuel Pump Switch (VIN F) (VIN 8)
Lower LH side of engine : 201- 8-A
...................... Fuel Tank Unit .................. Top center of fuel tank 201- 9-C
....... Fuse Block ...................... Behind LH side of IIP. below light switch 201-10-A
............ Gear Selector Switch ............. In console. at base of gear selector 201-11-E
Idle Air Control Stepper Motor (VIN
...................... F) (VIN 8) ..................... Top LN front of engine 201- 8-C
...................... Ignition Coil (VIN F)(VIN 8) ....... RH rear side of engine 201- 7-B
...... Ignition Switch .................. Behind IIP. on top side of steering column 201- 9-A
In-Line Fuse (VIN F)(VIN 8) ....... On LH side of radiator support. forward of
battery
................................. 201- 5-C

MULTI-PQRT FUEL INJECTION: V8 VIN 8
COMPONENT LOCATION Page-Figure
Manifold
Air amperatwe (MAT)
........... Sensor (VIN F) (VIN 8) Top of intake manifold
Mass
Air Flow (MAF) Relay (VIN F)
........................ (VIN 8) LH rear corner of engine compartment. on relay
bracket
.................................
Mass Air Flow (MAF) Sensor (VIN F)
........................ (VIN 8) Front of engine coqartment. on rear of air
.................................. cleaner
Oxygen Sensor (VIN F) (VIN 8) ..... Lower LW side of engine. on exhaust manifold
Throttle Position Sensor (VIN
F)
........................ (VIN 8)
Top center of engine ........................
....... ............. Vehicle Speed Sensor Buffer BeGnd RH side of IIP. near ECM
................ C100 (42 cavities) LH front of dash. left of brake master cylinder ..
6113 (1 cavity) (VIN F) (VIM 8) ..... Taped to engine harness. RH front of dash ......
C114 (1 cavity) (VIN F) (VIN 8) ..... Taped to engine harness. above rear of engine ...
C143 (1 cavity) (VIN F) (VIN 8) ..... Lower LH side of engine. below exhaust manifold
.......................................
.......................... ................. C172 (2 cavities)
Top rear of engine
................ C207 (15 cavities)
Behind RI-I side of IIP. near ECM .............
................. .................... C313 (3 cavities) Below center of back seat
............. GI12 (VIN F) (VIN 8)
Rear of LN cylinder head ....................
............. .................... 6118 (VIN F) (VIN 8) Rear of RH cylinder head
.......................... 6200
Behind IIP. left of steering column ............
.......................... 6304
Under rear seat. on support bracket
............. S142 (VIN F) (VIN 8)
Engine harness. behind RH side of IIP
............. ............. S143 (VIN F) (VIN 8) Engine harness. RH front of dash
............. S145 (VIN F) (VIN 8)
Engine harness. above LH rear of engine .......
............. S146 (VIN F) (VIN 8)
Engine harness. behind RH side of IIP
........................... S158
Engine harness. behind RN side of IIP
........................... S162 Engine harness. LK rear corner of engine
compartment
............................
........................... S164 I/P harness. above Fuse Block ................
............. S166 (VIN F) (VIN 8) Engine harness.
above LN rear of engine .......
............. ............. S168 (VIN F) (VIN 8) Engine harness. RH front
of dash
........................... ............. S171 Engine harness. RN front of dash
1 S172 (VIN F) (VIN 8) ............. ~n& harness. RH front of dash .............

MULTI-PORT FUEL INJECTION: V8 VIN 8 1:
COMPONENT LOCATION Page-Figure
........ S205. .......................... IIP harness, behind instrument cluster.
.............. S217. .......................... IIP harness, behind center of IIP
S242. .......................... IIP harness, behind RH side of IIP ............
............ S276. .......................... I/P harness, behind RH side of IIP
S173. .......................... Engine harness, top center rear of engine. ......
S174 (VIN F) (VIN 8) ............. Engine harness, top center rear of engine. ......
S175 (VIN F) (VIN 8) ............. Engine harness, above LR rear of engine. ......
S176 (VIN F) (VIN 8) ............. Engine harness, behind RH side of IIP
S180 (VIN F) (VIN 8) ............. Engine harness, above RN rear of engine. ......
S202. .......................... IIP harness, behind RH side of IIP ............
S204. .......................... IIP harness, behind instrument cluster. ........

MULTI-PORT FUEL INJECTION: V8 VIN 8
ELECTRONIC CONTROL MODULE CONNECTORS
C1 ELK ELECTRONIC CONTROL MODULE (ECM) 0 BLK voooo5 1

STARTER AND CHARGING SYSTEM: V6 VIN S :
STARTER I

% STARTER AND CHARGING SYSTEM: V8 VIN F, V8 VIN 8 41 20 A E - kl STARTER a

TROUBLESHOOTING HINTS
STARTER
Try the following checks before doing
the Sys-
tem Diagnosis
.
1 . Check the hydrometer eye that is built into
the vehicle Battery before troubleshooting
the Starter System
.
. Green eye . Battery is charged .
. Dark eye . Battery is discharged . Recharge
Battery
.
- Clear or yellow eye . Battery fluid is low .
Replace Battery .
2 . Check that the Starter Solenoid te
and B and battery
connections are clean and
tight
.
3 . Check that grounds 6100 and 6103 are
clean and tight
.
Go to System Diagnosis for diagnostic tests .
SYSTEM DIAGNOSIS
STARTER
NOTE:
The following tests are designed for
engines and batteries at normal operat-
ing temperatures and assumes that
there are no engine symptoms which
could cause a no start condition
. To use
the tests under other conditions could
result in misdiagnosis
.
Diagnostic steps for the symptorns listed in
the following table are listed after the table
.
COMPONENT LOCATION Page-Figure
Clutch Start Switch
.............. Above clutch pedal. on clutch pedal support
Fusible Link A (VIN E)
........... Lower RH side of engine. at Starter Solenoid .... 201- 2-A
Fusible Link A (VIN F) (VIN
8) ..... Lower RH side of engine. at Starter Solenoid .... 201- 6-B
Fusible Link A (VIN S)
............ Lower RH side of engine. at Starter Solenoid .... 201- 1-A
Fusible Link B (VIN
E) ............ Lower RH side of engine. at Starter Solenoid .... 201- 2-A
Fusible Link
B (VIN F) (VIN 8) ..... Lower RH side of engine. at Starter Solenoid .... 201- 6-B
Fusible Link B (VIN S)
............ Lower RH side of engine. at Starter Solenoid .... 201- 1-A
Fusible Link
H (VIN E) ........... RN front of engine compartment. at Junction
................................... Block 201- 3-B
Fusible Link
H (VIN F) (VIN 8) ..... LH front of engine compartment. behind battery 201- 5-C
Fusible
Link H (VIN S) ............ Lower RH side of engine. at Starter Solenoid .... 201- 1-A
Fusible Link
J (VIN E) ............ Lower RH side of engine. at Starter Solenoid .... 201- 2-A
Fusible Link
J (VIN F) (VIN 8) ..... Lower RH side of engine. at Starter Solenoid .... 201- 6-B
Fusible Link
K .................. RH front of engine compartment. at Junction
................................... Block 201- 3-B
Gear Selector Switch
............. In console. at base of gear selector ............ 201-11-E
Ignition Switch
.................. Behind IIP. on top side of steering column ...... 201- 9-A
In-Line Fuse (VIN E)
............. RH inner fender panel by battery ............. 201- 3-B
In-Line Fuse (VIN F)(VIN 8) ....... On LN side of radiator support. forward of
battery
................................. 201- 5-C
Junction Block
.................. RH front of engine compartment. behind
headlight
................................ 201- 1-A
Starter Solenoid (VIN
E) .......... Lower RH side of engine .................... 201- 2-A
Starter Solenoid (VIN F) (VIN
8) .... Lower RH side of engine .................... 201- 6-B
Starter Solenoid (VIN S)
.......... Lower RH side of engine .................... 201- 1-A
el00 (42 cavities) ................ LH front of dash. left of brake master cylinder .. 201- 0-A
Clll(1 cavity) ................... Behind battery. near positive battery cable ..... 201- 7-A
el12 (1 cavity) ................... Behind battery. near positive battery cable ..... 201- 7-A
G100 (VIN E) ................... RH front of engine ......................... 201- 4-B
G100 (VIN F) (VIN 8) ............. Lower LH front of engine .................... 201- 8-B
6100 (VIN S) .................... Lower LH front of engine .................... 201- 1-B
6103 (Except VIN
E) ............. On radiator support. behind LH headlights ..... 201-16-A
6103 (VIN
E) ................... RH inner fender panel. near battery ........... 201- 3-B
S200
........................... IIP harness. behind LH side of IIP ............ 201-10-A