
SWITCH STOP LAMP
1
6 GRAY
F32 18PK/DB L50 18WT/TN
V30 20DB/RD* V32 20YL/RD* Z1 20BK
K29 20WT/PK
6 5 4
3 2 1 CAV FUSED B(+)
STOP LAMP SWITCH OUTPUT SPEED CONTROL BRAKE SWITCH OUTPUT SPEED CONTROL ON/OFF SWITCH SENSE
GROUND STOP LAMP SWITCH SENSE FUNCTION CIRCUIT
* GAS
DIMMING MODULESPEED CONTROL
4BLACK1
V32 20YL/RD V38 20LB/RD L97 29PK/DB
4 3 2 1 CAV SPEED CONTROL ON/OFF SWITCH SENSE
SPEED CONTROL RELAY CONTROL PARK LAMP RELAY CONTROL
- FUNCTION
- CIRCUIT
BLACK
(BUILT-UP-EXPORT)
6 1
MODULE IMMOBILIZERSENTRY KEY
CAV CIRCUIT FUNCTION
1 F41 20PK/VT FUSED B(+)
2 Z2 20BK GROUND
3 F87 20WT/BK FUSED IGNITION (ST-RUN)
4- -
5 D2 20WT/BK CCD BUS (-)
6 D1 20VT/BR CCD BUS (+)
SWITCH SEAT BELT
2 1BLACK
Z1 20BK G10 18LG/RD
2 1 CAV GROUND SEAT BELT SWITCH SENSE FUNCTION CIRCUIT
VANITY MIRROR LAMPSRIGHT VISOR/
ABBLACK
F41 20PK/VT M20 20BR
B A CAV FUSED B(+) COURTESY LAMP GROUND FUNCTION CIRCUIT
SIGNAL RELAYSTOP/TURNRIGHT
BLACK4
2
3 5
2 1
GROUND STOP LAMP SWITCH OUTPUT
L605 18DG L62 18BR/RD L74 18LG Z1 18BK
Z1 18BK L50 18WT/TN L50 18WT/TN
5 4
3 CAV RIGHT COMBINATION RELAY OUTPUT RIGHT TURN SIGNAL STOP LAMP SWITCH OUTPUTFUNCTION CIRCUIT
(TRAILER TOW)
NS/GS8W-80 CONNECTOR PIN-OUTS 8W - 80 - 83
NSGS8083J988W-3

CONNECTOR TRAILER TOW
CAP
L73 18YL Z1 18WT
L78 18BR
L74 18LG
4 3 2 1 CAV STOP LAMP SWITCH OUTPUT
GROUND
FUSED B(+) STOP LAMP SWITCH OUTPUT CIRCUIT
FUNCTION
SWITCH TRACTION CONTROL
E2 20OR B27 20RD/YL Z1 20BK
3 2
1 CAV PANEL LAMP FEED
TRACTION CONTROL SWITCH SENSE GROUND CIRCUIT
FUNCTION
3 1BLACK
(EXCEPT 2.0L) POSITION SENSORTHROTTLE
K4 18BK/LB
SENSOR GROUND 1
3
CAV CIRCUIT FUNCTION
1
K22 18OR/DB THROTTLE POSITION SENSOR SIGNAL 2
K6 18VT/WT 5 VOLT SUPPLY
3
CIRCUIT FUNCTION
CAV
1
2K4 18BK/LB CRANK POSITION SENSOR
THROTTLE POSITION SENSOR SIGNAL K22 18OR/DB
3K6 18VT/WT 5V SUPPLY
(2.0L) SENSOR THROTTLE POSITION
WHITE
31
WHITE
8W - 80 - 84 8W-80 CONNECTOR PIN-OUTSNS/GS
J988W-3NSGS8084

MODULE CONTROL TRANSMISSION
(CONTINUED ON NEXT PAGE)
BLACK
+ + + + + + + + +
2011 101
6051 50
40 21
41
T20 18LB T19 18WT T16 18RD T16 18RD
T15 18LG T14 18LG/WT
T13 18DB/BK K22 18OR/DB F11 18RD/WT
T10 18YL/DG T9 18OR/BK F45 18YL/RD
D21 18PK K24 18GY/BK D2 18WT/BK T3 18VT T1 18LG/BK
40 39
38 37 36
35 34 33
32 31 30
29 28 27
26 25 24
23 22 21
20 19 18
17 16 15
14 13 12
11 10 9
8 7 6
5 4 3
2 1 CAV LOW/REVERSE SOLENOID CONTROL
2-4 SOLENOID CONTROL TRANSMISSION CONTROL RELAY OUTPUT TRANSMISSION CONTROL RELAY OUTPUT
12 VOLT SUPPLY OUTPUT SHAFT SPEED SENSOR SIGNAL
SPEED SENSOR GROUND THROTTLE POSITION SENSOR SIGNAL FUSED IGNITION (ST-RUN-OFF)
TORQUE MANAGEMENT REQUEST SENSE OVERDRIVE PRESSURE SWITCH SENSE FUSED IGNITION (ST)
SCI TRANSMIT CRANKSHAFT POSITION SENSOR SIGNAL CCD BUS(-) TRANSMISSION RANGE SWITCH T3 SENSE TRANSMISSION RANGE SWITCH T1 SENSE
- -
- - -
- - -
- - -
- - -
- - -
- - - - - - CIRCUIT
- -
- - -
- - -
- - -
- - -
- - -
- - - - - - FUNCTION
NS/GS8W-80 CONNECTOR PIN-OUTS 8W - 80 - 85
NSGS8085J988W-3

(CONTINUED)
T60 18BR T59 18PK G7 18WT/OR
Z13 16BK/RD A5 18RD/DB T54 18VT/LG Z14 16BK/YL T52 18RD/BK
K4 18BK/LB T50 18DG T47 18YL/BK D6 18PK/LB D1 18VT/BR T42 18VT/WT T41 18BK/WT
60 59
58 57 56
55 54 53
52 51 50
49 48 47
46 45 44
43 42 41 CAV OVERDRIVE SOLENOID CONTROL
UNDERDRIVE SOLENOID CONTROL
VEHICLE SPEED SENSOR SIGNAL
EATX GROUND FUSED B(+) EATX GROUND INPUT SPEED SENSOR SIGNAL
SENSOR GROUND LOW/REVERSE PRESSURE SWITCH SENSE 2/4 PRESSURE SWITCH SENSE SCI RECEIVE CCD BUS(+) TRANSMISSION RANGE SWITCH T42 SENSE TRANSMISSION RANGE SWITCH T41 SENSE
- - - - - CIRCUIT
- - - - - FUNCTION
RANGE SENSORTRANSMISSION
5
10
61BLACK
T41 18BR/YL T42 18VT/WT
T3 18VT T1 18LG/BK L1 18VT/BK
T41 18BK/WT T54 18VT/LG T13 18DB/BK F20 18WT
109 8
7
6 5 4
3 2 1 CAV TRANSMISSION RANGE SENSOR T41 SENSE
TRANSMISSION RANGE SENSOR T42 SENSE TRANSMISSION RANGE SENSOR T3 SENSE TRANSMISSION RANGE SENSOR T1 SENSE
BACK-UP LAMP FEED TRANSMISSION RANGE SENSOR T41 SENSE TRANSMISSION TEMPERATURE SENSOR SIGNAL
SPEED SENSOR GROUND FUSED IGNITION SWITCH OUTPUT
- CIRCUIT
- FUNCTION 5 634 8 721 BLACK
T19 18WT T20 18LB T60 18BR
T59 18PK T16 18RD T9 18OR/BK
T50 18DG T47 18YL/BK
8 7
6 5 4
3 2 1 CAV 2/4 SOLENOID CONTROL LOW/REVERSE SOLENOID CONTROL OVERDRIVE SOLENOID CONTROL
UNDERDRIVE PRESSURE SWITCH SENSE TRANSMISSION CONTROL RELAY OUTPUT OVERDRIVE PRESSURE SWITCH SENSE
LOW/REVERSE PRESSURE SWITCH SENSE 2/4 PRESSURE SWITCH SENSE CIRCUIT
FUNCTION
TRANSMISSION
CONTROL SOLENOIDS
TRANSMISSION TEMPERATURE SENSOR SIGNAL
8W - 80 - 86 8W-80 CONNECTOR PIN-OUTSNS/GS
J988W-3NSGS8086

(EXCEPT BUILT-UP-EXPORT)MODULEWIPER- - - - - - - -
BLACK
GROUND WIPER HIGH/LOW RELAY HIGH SPEED OUTPUT
WIPER PARK SWITCH SENSE WIPER HIGH/LOW RELAY LOW SPEED OUTPUT105
6 1Z1 14BK V4 12RD/YL
V7 20DG/WT V3 12BR/WT
109
8 7 6
5 4 3
2 1 CAV
- - CIRCUIT - - FUNCTION
1
14
GROUND Z1 14BK(BUILT-UP-EXPORT)MODULEWIPER
CAV CIRCUIT FUNCTION
1 V3 12BR/WT WIPER HIGH/LOW RELAY LOW SPEED OUTPUT
2 V7 20DG/WT WIPER PARK SWITCH SENSE
3 V4 12RD/YL WIPER HIGH/LOW RELAY HIGH SPEED OUTPUT
4
(EXCEPT 3.3L/3.8L)SENSOR VEHICLE SPEED3 28 VOLT SUPPLY K7 18OR
G7 18WT/OR VEHICLE SPEED SENSOR SIGNAL K4 20BK/LB* SENSOR GROUNDFUSED IGNITION (ST-RUN)
CAV CIRCUIT FUNCTION
1
F87 18WT/BK* 1
K4 18BK/LB SENSOR GROUND
2
* DIESEL BLACK
BLACK
1 3
8W - 80 - 88 8W-80 CONNECTOR PIN-OUTSNS/GS
J988W-3NSGS8088

in the engine compartment next to the battery (Fig.
30). A label affixed to the underside of the PDC cover
identifies the relays and fuses in the PDC.
GENERATOR FIELDÐPCM OUTPUT
The PCM regulates the charging system voltage
within a range of 12.9 to 15.0 volts. Refer to Group
8A for Battery system information and 8C for charg-
ing system information.
AUTOMATIC SHUTDOWN RELAYÐPCM OUTPUT
The Automatic Shutdown (ASD) relay supplies bat-
tery voltage to the fuel injectors, electronic ignition
coil and the heating elements in the oxygen sensors.
A buss bar in the Power Distribution Center (PDC)
supplies voltage to the solenoid side and contact side
of the relay. The ASD relay power circuit contains a
25 amp fuse between the buss bar in the PDC and
the relay. The fuse is located in the PDC. Refer to
Group 8W, Wiring Diagrams for circuit information.
The PCM controls the relay by switching the
ground path for the solenoid side of the relay on and
off. The PCM turns the ground path off when the
ignition switch is in the Off position unless the 02
Heater Monitor test is being run. Refer to Group 25,
On-Board Diagnostics. When the ignition switch is in
the On or Crank position, the PCM monitors the
crankshaft position sensor and camshaft position sen-
sor signals to determine engine speed and ignition
timing (coil dwell). If the PCM does not receive the
crankshaft position sensor and camshaft position sen-
sor signals when the ignition switch is in the Run
position, it will de-energize the ASD relay.The ASD relay is located in the PDC (Fig. 30). A
label affixed to the underside of the PDC cover iden-
tifies the relays and fuses in the PDC.
FUEL PUMP RELAYÐPCM OUTPUT
The fuel pump relay supplies battery voltage to the
fuel pump. The fuel pump relay power circuit con-
tains a 9 amp fuse. The fuse is located in the PDC.
Refer to Group 8W, Wiring Diagrams for circuit infor-
mation.
The PCM controls the fuel pump relay by switch-
ing the ground path for the solenoid side of the relay
on and off. The PCM turns the ground path off when
the ignition switch is in the Off position. When the
ignition switch is in the On position, the PCM ener-
gizes the fuel pump. If the crankshaft position sensor
does not detect engine rotation, the PCM de-ener-
gizes the relay after approximately one second.
The fuel pump relay is located in the PDC (Fig.
30). A label affixed to the underside of the PDC cover
identifies the relays and fuses in the PDC.
STARTER RELAYÐPCM OUTPUT
Double Start Override ia a feature that prevents
the starter from operating if the engine is already
running. This feature is accomplished with software
only. There was no hardware added because of this
feature. To incorporate the unique feature of Double
Start Override, it was necessary to use the PCM
(software) to control the starter circuit. To use the
PCM it was necessary to separate the starter relay
coil ground from the park neutral switch. The starter
relay ground is now controlled through Pin 60 of the
PCM. This allows the PCM to interrupt the ground
circuit if other inputs tell it that the engine is turn-
ing. If the starter system is operating properly, it can
be assumed that the override protection is also work-
ing.
IDLE AIR CONTROL MOTORÐPCM OUTPUT
The idle air control motor is mounted on the throt-
tle body. The PCM operates the idle air control motor
(Fig. 26) or (Fig. 27) or (Fig. 28). The PCM adjusts
engine idle speed through the idle air control motor
to compensate for engine load or ambient conditions.
The throttle body has an air bypass passage that
provides air for the engine at idle (the throttle blade
is closed). The idle air control motor pintle protrudes
into the air bypass passage and regulates air flow
through it.
The PCM adjusts engine idle speed by moving the
idle air control motor pintle in and out of the bypass
passage. The adjustments are based on inputs the
PCM receives. The inputs are from the throttle posi-
tion sensor, crankshaft position sensor, coolant tem-
perature sensor, and various switch operations
Fig. 30 Power Distribution Center (PDC)
14 - 42 FUEL SYSTEMNS
DESCRIPTION AND OPERATION (Continued)

(22) Check the accessory drive belt tension.
(23) Check the 40-way electrical connectors at the
Powertrain Control Module (PCM) (Fig. 59) for dam-
age or spread terminals. Verify that the connectors
are fully inserted into the PCM sockets. Ensure the
wires are not stretched or pulled out of the connector.
(24) Inspect fuses in the Power Distribution Cen-
ter (PDC). Verify all fuses and relays are fully
inserted into the PDC (Fig. 60). A label affixed to the
underside of the PDC cover identifies the relays and
fuses in the PDC.(25) Inspect battery cable connections for corro-
sion.
(26) Check the power brake booster hose connec-
tion (without anti-lock brake systems) (Fig. 61).
(27) Inspect the speed control vacuum connection.
(28) Inspect hose and wiring connections at fuel
pump module. Check that wiring connector is making
contact with terminals on pump.
Fig. 56 Map Sensor
Fig. 57 Upstream Heated Oxygen Sensor
Fig. 58 Downstream Heated Oxygen Sensor
Fig. 59 Powertrain Control Module (PCM)
Connectors
NSFUEL SYSTEM 14 - 51
DIAGNOSIS AND TESTING (Continued)

terminals. Verify the connectors are fully inserted
into the socket of the PCM (Fig. 74). Ensure that
wires are not stretched or pulled out of the connector.
(24) Inspect fuses in the Power Distribution Cen-
ter (PDC). Verify all fuses and relays are fully
inserted into the PDC (Fig. 74). A label affixed to the
underside of the PDC cover identifies the relays and
fuses in the PDC.
(25) Check Battery Cable Connections.
(26) Check hose and wiring connections at fuel
pump module. Check that wiring connector is making
contact with terminals on pump.
VISUAL INSPECTIONÐ3.3/3.8L ENGINES
A visual inspection for loose, disconnected, or mis-
routed wires and hoses should be made before
attempting to diagnose or service the fuel injection
system. A visual check helps save unnecessary test
and diagnostic time. A thorough visual inspection will
include the following checks:
(1) Check ignition cable routing from the coil pack
to the spark plugs. Verify the cable are routed in the
correct order and are fully seated to the coil and
spark plug.(2) Check direct ignition system (DIS) coil electri-
cal connection for damage and a complete connection
to the coil pack (Fig. 75).
(3) Verify the camshaft position sensor electrical
connector is connected to the harness and not dam-
aged (Fig. 76).
(4) Ensure the engine temperature sensor electri-
cal connector is connected to the sensor and not dam-
aged (Fig. 77).
(5) Verify the quick connect fuel fitting is fully
inserted on the fuel supply tube.
(6) Check the oil pressure sending unit electrical
connection (Fig. 78).
Fig. 74 Powertrain Control Module (PCM)
Fig. 75 Ignition Coil Pack Electrical Connection
Fig. 76 Camshaft Position Sensor
NSFUEL SYSTEM 14 - 55
DIAGNOSIS AND TESTING (Continued)