engine JEEP GRAND CHEROKEE 2001 User Guide

ENGINE COOLANT TEMPERATURE SENSOR - ECM (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
2 K121 18BK/VT SENSOR GROUND
ENGINE COOLANT TEMPERATURE SENSOR - PCM (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K222 18TN/RD ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
2 K4 18BK/LB SENSOR GROUND
ENGINE OIL PRESSURE SENSOR - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 K6 18VT/BK (GAS) 5V SUPPLY
1 K6 18VT/WT (DIESEL) 5V SUPPLY
2 G60 18GY/YL ENGINE OIL PRESSURE SENSOR SIGNAL
3 K4 18BK/LB SENSOR GROUND
ENGINE SPEED SENSOR (DIESEL) - BLACK 3 WAY
CAV CIRCUIT FUNCTION
1 Z3 18BK/OR GROUND
2- -
3 K24 18GY/BK ENGINE SPEED SENSOR SIGNAL
WJ8Wa-80 CONNECTOR PIN-OUTS 8Wa - 80 - 63

HEADLAMP LEVELING SWITCH (BUILT-UP-EXPORT) - WHITE 3 WAY
CAV CIRCUIT FUNCTION
1 Z1 20BK GROUND
2 L7 18BK/YL PARK LAMP RELAY OUTPUT
3 L114 20VT/YL (RHD) HEADLAMP ADJUST SIGNAL
3 L114 20VT/DB (LHD) HEADLAMP ADJUST SIGNAL
HOOD AJAR SWITCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 G70 20BR/TN HOOD AJAR SWITCH SENSE
2 Z1 20BK GROUND
HORN NO. 1 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Z1 18BK GROUND
2 X2 18DG/RD HORN RELAY OUTPUT
HORN NO. 2 - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Z1 18BK GROUND
2 X2 18DG/RD HORN RELAY OUTPUT
HYDRAULIC COOLING MODULE - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 F142 18OR/DG FUSED AUTOMATIC SHUT DOWN RELAY OUTPUT
2 C240 18DB/RD ENGINE COOLANT TEMPERATURE
8Wa - 80 - 68 8Wa-80 CONNECTOR PIN-OUTSWJ

POWER CONNECTOR - WHITE 2 WAY
CAV CIRCUIT FUNCTION
1 A148 16VT FUSED B(+)
2 Z1 16BK GROUND
POWERTRAIN CONTROL MODULE C1 (DIESEL) - BLACK 32 WAY
CAV CIRCUIT FUNCTION
1- -
2 A142 14DG/OR AUTOMATIC SHUT DOWN RELAY OUTPUT
3- -
4 K4 18BK/LB SENSOR GROUND
5- -
6 T41 18BR/YL PARK/NEUTRAL POSITION SWITCH SENSE
7- -
8 K159 18GY ENGINE SPEED SENSOR SIGNAL
9- -
10 - -
11 - -
12 - -
13 - -
14 - -
15 - -
16 K222 18TN/RD PCM ENGINE COOLANT TEMPERATURE SENSOR SIG-
NAL
17 K7 18OR 5V SUPPLY
18 G8 18LB/BK FUEL MONITOR SIGNAL
19 - -
20 - -
WJ8Wa-80 CONNECTOR PIN-OUTS 8Wa - 80 - 91

POWERTRAIN CONTROL MODULE C1 (GAS) - BLACK 32 WAY
CAV CIRCUIT FUNCTION
1 K93 14TN/OR (4.7L) COIL DRIVER NO. 3
1 K93 16TN/OR (4.0L) COIL DRIVER NO. 3
2 F991 18OR/DB FUSED IGNITION SWITCH OUTPUT (RUN-START)
3 K94 14TN/LG (4.7L) COIL DRIVER NO. 4
4 K4 18BK/LB SENSOR GROUND
5 K96 14TN/LB (4.7L) COIL DRIVER NO. 6
6 T41 18BR/YL PARK/NEUTRAL POSITION SWITCH SENSE
7 K91 16TN/RD (4.0L) COIL DRIVER NO. 1
7 K91 14TN/RD (4.7L) COIL DRIVER NO. 1
8 K24 18GY/BK CRANKSHAFT POSITION SENSOR SIGNAL
9 K98 14LB/RD (4.7L) COIL DRIVER NO. 8
10 K60 18YL/BK IDLE AIR CONTROL NO. 2 DRIVER
11 K40 18BR/WT IDLE AIR CONTROL NO. 3 DRIVER
12 - -
13 - -
14 - -
15 K21 18BK/RD INTAKE AIR TEMPERATURE SENSOR SIGNAL
16 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
17 K7 18OR 5V SUPPLY
18 K44 18TN/YL CAMSHAFT POSITION SENSOR SIGNAL
19 K39 18GY/RD (4.0L) IDLE AIR CONTROL NO. 1 DRIVER
19 K39 18GY/BK (4.7L) IDLE AIR CONTROL NO. 1 DRIVER
20 K59 18VT/BK IDLE AIR CONTROL NO. 4 DRIVER
21 K95 14TN/DG (4.7L) COIL DRIVER NO. 5
22 A7 14RD/BK FUSED B(+)
23 K22 18OR/RD THROTTLE POSITION SENSOR SIGNAL
24 K241 18LG/RD OXYGEN SENSOR 1/1 SIGNAL
25 K41 18BK/DG OXYGEN SENSOR 1/2 SIGNAL
26 K141 18TN/WT OXYGEN SENSOR 2/1 SIGNAL
27 K1 18DG/RD MAP SENSOR SIGNAL
28 - -
29 K341 18PK/WT (EXCEPT 4.0L EXCEPT
BUILT-UP-EXPORT)OXYGEN SENSOR 2/2 SIGNAL
30 - -
31 Z11 14BK/WT GROUND
32 Z12 14BK/TN GROUND
8Wa - 80 - 92 8Wa-80 CONNECTOR PIN-OUTSWJ

Fig. 8 ENGINE CONNECTORS (4.0L)
WJ8Wa-90 CONNECTOR/GROUND LOCATIONS 8Wa - 90 - 17

Fig. 10 ENGINE CONNECTORS (4.0L) - RHD
8Wa - 90 - 18 8Wa-90 CONNECTOR/GROUND LOCATIONSWJ
CONNECTOR/GROUND LOCATIONS (Continued)

Fig. 5 ENGINE SPLICES (4.0L)
8Wa - 95 - 10 8Wa-95 SPLICE LOCATIONSWJ
SPLICE LOCATIONS (Continued)

Fig. 7 ENGINE SPLICES (4.0L) RHD
WJ8Wa-95 SPLICE LOCATIONS 8Wa - 95 - 11

CONDITION POSSIBLE CAUSES CORRECTION
HARSH ENGAGEMENT
(FROM NEUTRAL TO
DRIVE OR REVERSE)1. Fluid Level Low. 1. Add Fluid
2. Throttle Linkage Mis-adjusted. 2. Adjust linkage - setting may be too long.
3. Mount and Driveline Bolts Loose. 3. Check engine mount, transmission
mount, propeller shaft, rear spring to body
bolts, rear control arms, crossmember and
axle bolt torque. Tighten loose bolts and
replace missing bolts.
4. U-Joint Worn/Broken. 4. Remove propeller shaft and replace
U-Joint.
5. Axle Backlash Incorrect. 5. Check per Service Manual. Correct as
needed.
6. Hydraulic Pressure Incorrect. 6. Check pressure. Remove, overhaul or
adjust valve body as needed.
7. Band Mis-adjusted. 7. Adjust rear band.
8. Valve Body Check Balls Missing. 8. Inspect valve body for proper check ball
installation.
21s - 2 AUTOMATIC - 42REWG

CONDITION POSSIBLE CAUSES CORRECTION
HARSH ENGAGEMENT
(FROM NEUTRAL TO
DRIVE OR REVERSE)1. Fluid Level Low. 1. Add Fluid
2. Throttle Linkage Mis-adjusted. 2. Adjust linkage - setting may be too long.
3. Mount and Driveline Bolts Loose. 3. Check engine mount, transmission
mount, propeller shaft, rear spring to body
bolts, rear control arms, crossmember and
axle bolt torque. Tighten loose bolts and
replace missing bolts.
4. U-Joint Worn/Broken. 4. Remove propeller shaft and replace
U-Joint.
5. Axle Backlash Incorrect. 5. Check per Service Manual. Correct as
needed.
6. Hydraulic Pressure Incorrect. 6. Check pressure. Remove, overhaul or
adjust valve body as needed.
7. Band Mis-adjusted. 7. Adjust rear band.
8. Valve Body Check Balls Missing. 8. Inspect valve body for proper check ball
installation.
9. Axle Pinion Flange Loose. 9. Replace nut and check pinion threads
before installing new nut. Replace pinion
gear if threads are damaged.
10. Clutch, band or planetary
component damaged.10. Remove, disassemble and repair
transmission as necessary.
11. Converter Clutch Faulty. 11. Replace converter and flush cooler and
line before installing new converter.
21s - 52 AUTOMATIC - 44REWG
AUTOMATIC - 44RE (Continued)