
POWERTRAIN CONTROL MODULE C2 (2.4L/3.3L/3.8L) - GRAY/GRAY 40 WAY
CAV CIRCUIT FUNCTION
41 V37 18VT SPEED CONTROL SWITCH SIGNAL
42 C18 18LB/BR A/C PRESSURE SENSOR SIGNAL
43 K900 18DB/DG SENSOR GROUND
44 F888 18BR/PK 8 VOLT SUPPLY
45 - -
46 A109 18OR/RD FUSED B(+)
47 - -
48 K40 18BR/LG (2.4L) IDLE AIR CONTROL NO. 3 DRIVER
49 K60 18VT/LG (2.4L) IDLE AIR CONTROL NO. 2 DRIVER
49 K39 18VT/DG (3.3L/3.8L) IDLE AIR CONTROL NO. 1 DRIVER
50 Z131 18BK/DG GROUND
51 K141 18DB/YL OXYGEN SENSOR 1/2 SIGNAL
52 - -
53 - -
54 - -
55 - -
56 V36 18VT/YL SPEED CONTROL VACUUM SOLENOID CONTROL
57 K39 18VT/DG (2.4L) IDLE AIR CONTROL NO. 1 DRIVER
57 K60 18VT/LG (3.3L/3.8L) IDLE AIR CONTROL NO. 2 DRIVER
58 K59 18BR/DG (2.4L) IDLE AIR CONTROL NO. 4 DRIVER
59 D25 18WT/VT PCI BUS
60 - -
61 F855 18PK/YL 5 VOLT SUPPLY
62 B29 18DG/WT SECONDARY BRAKE SWITCH SIGNAL
63 T10 18DG/LG (EATX) TORQUE MANAGEMENT REQUEST SENSE
64 C13 18LB/OR A/C COMPRESSOR CLUTCH RELAY CONTROL
65 D21 18WT/BR SCI TRANSMIT
66 N7 18DB/OR VEHICLE SPEED SENSOR SIGNAL
67 K51 18BR/WT AUTOMATIC SHUTDOWN RELAY CONTROL
68 K52 18DB/WT EVAPORATIVE EMISSION SOLENOID CONTROL
69 - -
70 K70 18DB/BR EVAPORATIVE EMISSION SOLENOID SENSE
71 - -
72 K107 18VT/WT (EXCEPT BUILT-UP-
EXPORT)LEAK DETECTION PUMP SWITCH SENSE
73 K173 18BR/VT RADIATOR FAN RELAY CONTROL
74 K31 18BR FUEL PUMP RELAY CONTROL
75 D20 18WT/LG SCI RECEIVE
76 T41 18YL/DB PARK/NEUTRAL POSITION SWITCH SENSE (TRS T41)
77 K106 18VT/LB (EXCEPT BUILT-UP-
EXPORT)LEAK DETECTION PUMP SOLENOID CONTROL
78 K54 18DB/WT (ATX) TORQUE CONVERTER CLUTCH SOLENOID CONTROL
79 - -
80 V35 18VT/OR SPEED CONTROL VENT SOLENOID CONTROL
RG8W-80 CONNECTOR PIN-OUTS8Wa-80-99

POWER WINDOW CIRCUIT BREAKER (25A) - GRAY 2 WAY
CAV CIRCUIT FUNCTION
1 F30 12PK/YL FUSED ACCESSORY RELAY OUTPUT
2 F304 12WT/PK FUSED WINDOW CIRCUIT BREAKER OUTPUT
RADIATOR FAN NO. 1 (DIESEL) - GRAY 2 WAY
CAV CIRCUIT FUNCTION
1 N202 12DB/OR RADIATOR FAN NO. 1 CONTROL
2 N201 12DB/LG RADIATOR FAN RELAY NO. 1 OUTPUT
RADIATOR FAN NO. 1 (GAS) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 N23 12DB/DG RADIATOR FAN RELAY OUTPUT
2 Z223 12BK/DG GROUND
RADIATOR FAN NO. 2 (DIESEL) - GRAY 2 WAY
CAV CIRCUIT FUNCTION
1 Z823 12BK GROUND
2 N112 12DB/OR RADIATOR FAN RELAY NO. 2 AND NO. 3 COMMON
OUTPUT
RADIATOR FAN NO. 2 (GAS) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 N23 12DB/DG RADIATOR FAN RELAY OUTPUT
2 Z223 12BK/DG GROUND
8Wa - 80 - 100 8W-80 CONNECTOR PIN-OUTSRG

RADIATOR FAN RELAY (GAS) - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 A112 12OR/RD FUSED B(+)
2 N23 12DB/DG RADIATOR FAN RELAY OUTPUT
3 Z723 18BK/DG GROUND
4 N173 16DB/VT (BUILT-UP-EXPORT) RADIATOR FAN RELAY CONTROL
4 N173 18DB/VT (EXCEPT BUILT-UP-
EXPORT)RADIATOR FAN RELAY CONTROL
RADIATOR FAN RELAY NO. 1 (DIESEL) - BLUE 9 WAY
CAV CIRCUIT FUNCTION
1- -
2 N201 12DB/LG RADIATOR FAN RELAY NO. 1 OUTPUT
3- -
4 K342 16BR/WT ECM/PCM RELAY OUTPUT
5- -
6 N210 18DB/DG LOW SPEED RADIATOR FAN RELAY CONTROL
7- -
8 A201 12RD/LG FUSED B(+)
9- -
RADIATOR FAN RELAY NO. 2 (DIESEL) - BLUE 9 WAY
CAV CIRCUIT FUNCTION
1- -
2 N112 12DB/OR RADIATOR FAN RELAY NO. 2 AND NO. 3 COMMON
OUTPUT
3- -
4 K342 16BR/WT ECM/PCM RELAY OUTPUT
5- -
6 N122 18DB/YL HIGH SPEED RADIATOR FAN DUAL RELAY CONTROL
7- -
8 A112 12OR/RD FUSED B(+)
9- -
RG8W-80 CONNECTOR PIN-OUTS8Wa - 80 - 101

RADIATOR FAN RELAY NO. 3 (DIESEL) - BLUE 9 WAY
CAV CIRCUIT FUNCTION
1- -
2 Z823 12BK GROUND
3- -
4 K342 16BR/WT ECM/PCM RELAY OUTPUT
5 N112 12DB/OR RADIATOR FAN RELAY NO. 2 AND NO. 3 COMMON
OUTPUT
6 N122 18DB/YL HIGH SPEED RADIATOR FAN DUAL RELAY CONTROL
7- -
8 N202 12DB/OR RADIATOR FAN NO. 1 CONTROL
9- -
RADIO C1 - GRAY 7 WAY
CAV CIRCUIT FUNCTION
1- -
2 X55 20DG/BR LEFT FRONT SPEAKER (-)
2 X155 20DG/LB (LOW LINE) LEFT FRONT I/P SPEAKER (-)
3 X156 20GY/LB (LOW LINE) RIGHT FRONT I/P SPEAKER (-)
3 X56 20GY/BR RIGHT FRONT SPEAKER (-)
4 E17 20OR/YL (EXCEPT BUILT-UP-EX-
PORT)PARADE MODE SIGNAL
5 E14 20OR/TN PANEL LAMPS DRIVER
6 F306 16DB/PK FUSED ACCESSORY RELAY OUTPUT
7 A114 16GY/RD FUSED B(+) (I.O.D.)
RADIO C2 - BLACK 7 WAY
CAV CIRCUIT FUNCTION
1 X60 20GY/YL (BUILT-UP-EXPORT) RADIO 12 VOLT OUTPUT
2 X51 20DG/DB LEFT REAR SPEAKER (+)
3 X52 20GY/DB RIGHT REAR SPEAKER (+)
4 X53 20DG LEFT FRONT SPEAKER (+)
4 X153 20DG/YL (LOW LINE) LEFT FRONT I/P SPEAKER (+)
5 X154 20GY/YL (LOW LINE) RIGHT FRONT I/P SPEAKER (+)
5 X54 20GY RIGHT FRONT SPEAKER (+)
6 X57 20DG/OR LEFT REAR SPEAKER (-)
7 X58 20GY/OR RIGHT REAR SPEAKER (-)
RADIO C3 - WHITE/RED 2 WAY
CAV CIRCUIT FUNCTION
1 D25 20WT/VT PCI BUS
2- -
8Wa - 80 - 102 8W-80 CONNECTOR PIN-OUTSRG

8W-90 CONNECTOR/GROUND LOCATIONS BUX
TABLE OF CONTENTS
page
CONNECTOR/GROUND LOCATIONS BUX
DESCRIPTION............................1
CONNECTOR/GROUND
LOCATIONS BUX
DESCRIPTION
This section provides illustrations identifying con-
nector and ground locations in the vehicle. A connec-tor and ground index is provided. Use the wiring
diagrams in each section for connector and ground
identification. Refer to the index for the proper figure
number. For items that are not shown in this section
N/S is placed in the Fig. column.
Component/Ground Color Location Fig.
A/C Compressor Clutch LTGY Top of A/C Compressor 10, 11, 12,
14, 15
A/C-Heater Control C1 (MTC) BK/RD Rear of Control 16, 19, 21
A/C-Heater Control C2 (MTC) BK/BL Rear of Control 16, 19, 21
A/C Pressure Sensor GY At Throttle Body 10, 12, 13,
14
Accelerator Pedal Position
Sensor (Diesel)BK At Accelerator Pedal 32
Ambient Temperature Sensor BK On Radiator Closure Panel 1
ATC Remote Sensor Above ATC Control N/S
Automatic Day/Night Mirror BK At Mirror N/S
Autostick Switch BK Rear of Switch 17, 18, 19
Auto Temperature Control C1
(ATC)WT Rear of Control N/S
Auto Temperature Control C2
(ATC)BK Rear of Control N/S
Auto Temperature Control C3
(ATC)Rear of Control N/S
Back-Up Lamp Switch BK On Transmission 13
Battery Temperature Sensor
(Diesel)BK At Battery N/S
Blower Motor Resistor Block C1
(MTC)BK Right Side of HVAC N/S
Blower Motor Resistor Block C2
(MTC)Right Side of HVAC N/S
Body Control Module C1 BK Under Left Instrument Panel 31, 32
Body Control Module C2 BK/GN Under Left Instrument Panel 31, 32
Body Control Module C3 BK/WT Under Left Instrument Panel 31, 32
Body Control Module C4 BK/GY Under Left Instrument Panel 16, 17, 25
Body Control Module C5 BK Under Left Instrument Panel 16, 17, 25
RG8W-90 CONNECTOR/GROUND LOCATIONS BUX8Wa-90-1

Component/Ground Color Location Fig.
Power Liftgate Module C1 BK Left Quarter 35, 36
Power Liftgate Module C2 BK Left Quarter 35, 36
Power Liftgate Motor BK Left Quarter 36
Power Mirror Switch BK Rear of Switch 25
Power Outlet NAT Instrument Panel N/S
Power Seat Circuit Breaker GY Under Seat N/S
Powertrain Control Module C1 GY/BK LT Fender Side Shield N/S
Powertrain Control Module C2 GY LT Fender Side Shield N/S
Power Window Circuit Breaker GY Left Side Kick Panel 31, 32
Radiator Fan No.1 BK Left Side At Motor 1
Radiator Fan No.1 (Diesel) GY Left Side At Motor 3
Radiator Fan No.2 BK Right Side At Motor 1
Radiator Fan No.2 (Diesel) GY Right Side At Motor N/S
Radiator Fan Relay BK Top of Left Front Frame Rail 1
Radiator Fan Relay No. 1
(Diesel)BL Left Front Engine Compartment 3
Radiator Fan Relay No. 2
(Diesel)BL Left Front Engine Compartment 3
Radiator Fan Relay No. 3
(Diesel)BL Left Front Engine Compartment 3
Radio C1 GY Rear of Radio 16, 19, 21
Radio C2 BK Rear of Radio 16, 19, 21
Radio C3 WT/RD Rear of Radio 16, 21
Radio C4 Rear of Radio 16
Radio Choke LTGY Rear of Radio 31, 32
Rear A/C-Heater Unit LT/GN Right Quarter Panel N/S
Rear Automatic Temperature
Control Switch (ATC)BK Rear of Switch 30
Rear Blower Front Control Switch BK Rear of Switch
Rear Blower Rear Control Switch
C1BK At Switch In Headliner
Rear Blower Rear Control Switch
C2BK At Switch In Headliner
Rear Power Outlet RD Left Quarter Panel 36
Rear Washer Pump Motor BK Right Fender Well 4
Rear Wiper Motor BK At Motor 38
Recirculation Door Actuator NAT Right Side of HVAC
Remote Keyless Entry Antenna
(JAPAN)BK Right Upper Instrument Panel 23
Remote Keyless Entry Module BK/RD Top Left of I.P. 16, 17, 23
Right B-Pillar Switch GY Right B Pillar 29
Right Cinch/Release Motor BK Rear of Sliding Door 34
Right Combination Relay BK Left Quarter Panel N/S
Right Cylinder Lock Switch BK Right Front Door 33
RG8W-90 CONNECTOR/GROUND LOCATIONS BUX8Wa-90-9
CONNECTOR/GROUND LOCATIONS BUX (Continued)

Splice Number Location Fig.
S119 (2.5L) Near T/O for Engine Starter Motor 4
S120 (2.4L) Near T/O for Oxygen Sensors 2
S120 (3.3L/3.8L) Near T/O for Oxygen Sensors 5
S121 (3.3L/3.8L) Near T/O for Output Speed Sensor 5
S122 (2.4L) In T/O to Engine Starter Motor 1
S122 (3.3L/3.8L) In T/O to Engine Starter Motor 5
S123 In T/O to Low Note Horn 8
S124 (2.4L) Near T/O for Fuel Injector No.2 N/S
S124 (3.3L/3.8L) Near T/O for Fuel Injector No.5 and No.6 N/S
S125 (2.4L) In T/O for Manifold Absolute Pressure Sensor N/S
S127 (2.5L) Near T/O for Engine Starter Motor N/S
S128 (2.5L) Near T/O for Engine Starter Motor 4
S129 (2.5L) Near T/O for Battery (+) N/S
S130 (2.5L) Near T/O for Battery (+) N/S
S131 (3.3L/3.8L) Near T/O for Transmission Control Module N/S
S132 (2.5L) Near T/O for Battery (+) N/S
S133 (2.5L) Near T/O for Intelligent Power Module C3 N/S
S135 (2.5L) Near T/O for Glow Plug No.2 4
S136 (2.5L) Between T/O for Radiator Fan No.2 and T/O for G102 N/S
S137 (2.5L) Near T/O for A/C Compressor Clutch 4
S138 (2.5L) Between T/O for Radiator Fan No.2 and T/O for G102 N/S
S139 (2.5L) Between T/O for Engine Starter Motor and T/O for
Engine Control Module C13
S141 (2.4L) Near T/O for Powertrain Control Module N/S
S141 (2.5L) Near /t/O for G100 N/S
S141 (3.3L/3.8L) Near T/O for Powertrain Control Module N/S
S142 (3.3L/3.8L) Near T/O for A/C Compressor Clutch 5
S143 (2.5L) Near T/O for Engine Control Module C1 4
S143 (3.3L/3.8L) Near T/O for Intelligent Power Module - C3 N/S
S144 (2.5L) Between T/O for Battery Temperature Sensor and T/O for
C1034
S145 (2.5L) Near T/O for Battery (+) N/S
S148 (2.5L) Near T/O for Engine Starter Motor 4
S150 (2.5L) Between T/O for Battery Temperature Sensor and T/O for
C103N/S
S151 (2.5L) Near T/O for Radiator Fan Relay No.1 7
S152 (2.5L) Near T/O for Left Fog Lamp N/S
S157 (2.5L) Near T/O for Glow Plug No.1 4
S187 (2.5L) Near T/O for Engine Control Module C1 4
S188 (2.5L) Near T/O for Radiator Fan Relay No.1 7
S201 In T/O to Instrument Panel Speaker 9
S202 Near T/O for Instrument Panel Switch Bank 9, 10
S203 Near T/O for Instrument Panel Switch Bank 9, 10
8Wa - 95 - 2 8W-95 SPLICE LOCATIONS BUXRG
SPLICE LOCATIONS BUX (Continued)

ENGINE 2.4L
DESCRIPTION
The 2.4 Liter (148 cu. in.) in-line four cylinder
engine is a double over head camshaft with hydraulic
lifters and four valve per cylinder design. The engine
is free-wheeling; meaning it has provisions for piston-
to-valve clearance. However valve-to-valve interfer-
ence can occur, if camshafts are rotated
independently.
The cylinders are numbered from front of the
engine to the rear. The firing order is 1±3±4±2.
The engine identification number is located on the
rear of the cylinder block (Fig. 1).
DIAGNOSIS AND TESTING - CYLINDER
COMBUSTION PRESSURE LEAKAGE
The combustion pressure leakage test provides an
accurate means for determining engine condition.
Combustion pressure leakage testing will detect:
²Exhaust and intake valve leaks (improper seat-
ing).
²Leaks between adjacent cylinders or into water
jacket.
²Any causes for combustion/compression pressure
loss.
WARNING: DO NOT REMOVE THE RADIATOR CAP
WITH THE SYSTEM HOT AND UNDER PRESSURE
BECAUSE SERIOUS BURNS FROM COOLANT CAN
OCCUR.
Check the coolant level and fill as required. DO
NOT install the radiator cap.
Start and operate the engine until it attains nor-
mal operating temperature, then turn the engine
OFF.
Clean spark plug recesses with compressed air.
Remove the spark plugs.
Remove the oil filler cap.Remove the air cleaner.
Calibrate the tester according to the manufactur-
er's instructions. The shop air source for testing
should maintain 483 kPa (70 psi) minimum, 1,379
kPa (200 psi) maximum, with 552 kPa (80 psi) rec-
ommended.
Perform the test procedures on each cylinder
according to the tester manufacturer's instructions.
While testing, listen for pressurized air escaping
through the throttle body, tailpipe and oil filler cap
opening. Check for bubbles in the radiator coolant.
All gauge pressure indications should be equal,
with no more than 25% leakage per cylinder.
FOR EXAMPLE:At 552 kPa (80 psi) input pres-
sure, a minimum of 414 kPa (60 psi) should be main-
tained in the cylinder.
DIAGNOSIS AND TESTING - CYLINDER
COMPRESSION PRESSURE
The results of a cylinder compression pressure test
can be utilized to diagnose several engine malfunc-
tions.
Ensure the battery is completely charged and the
engine starter motor is in good operating condition.
Otherwise the indicated compression pressures may
not be valid for diagnosis purposes.
(1) Check engine oil level and add oil if necessary.
(2) Drive the vehicle until engine reaches normal
operating temperature. Select a route free from traf-
fic and other forms of congestion, observe all traffic
laws, and accelerate through the gears several times
briskly.
(3) Remove all spark plugs from engine. As spark
plugs are being removed, check electrodes for abnor-
mal firing indicators fouled, hot, oily, etc. Record cyl-
inder number of spark plug for future reference.
(4) Disconnect the ignition coil electrical connector.
(5) Be sure throttle blade is fully open during the
compression check.
(6) Insert compression gage adaptor Special Tool
8116 or the equivalent, into the #1 spark plug hole in
cylinder head. Connect the 0±500 psi (Blue) pressure
transducer with cable adaptors to the DRBIIIt.
(7) Crank engine until maximum pressure is
reached on gage. Record this pressure as #1 cylinder
pressure.
(8) Repeat the previous step for all remaining cyl-
inders.
(9) Compression should not be less than 689 kPa
(100 psi) and not vary more than 25 percent from cyl-
inder to cylinder.
(10) If one or more cylinders have abnormally low
compression pressures, repeat the compression test.
(11) If the same cylinder or cylinders repeat an
abnormally low reading on the second compression
test, it could indicate the existence of a problem in
Fig. 1 Engine Identification
1 - ENGINE IDENTIFICATION LOCATION
RSENGINE 2.4L9-3