coolant JEEP GRAND CHEROKEE 2001 Owners Manual

Fig. 1 COOLANT TANK PRESSURE/VENT CAP

Fig. 10 COOLANT LEVEL SENSOR REMOVAL/
INSTALLATION
WGENGINE 4.0L 7s - 19

Fig. 13 Water/Coolant Bypass Flow and Thermostat
WATER PUMP - 4.7L (Continued)

BODY CONTROL MODULE C2 - WHITE 22 WAY
CAV CIRCUIT FUNCTION
1 C103 20DG A/C SWITCH SIGNAL
2 V10 20BR WASHER PUMP SWITCH SENSE
3- -
4 L40 22BR HIGH BEAM SWITCH SENSE
5 V11 20BK/TN WASHER FLUID SWITCH SENSE
6 P134 20LG/WT PASSENGER SEAT HEATER SWITCH MUX
7 P133 20LG/RD DRIVER SEAT HEATER SWITCH MUX
8 X20 20RD/YL RADIO CONTROL MUX
9 C8 20DG/RD AMBIENT TEMPERATURE SENSOR SIGNAL
10 L109 20WT ULTRALIGHT SENSOR SIGNAL
11 V52 22DG/RD WINDSHIELD WIPER SWITCH MUX
12 C15 20BK/WT REAR WINDOW DEFOGGER SWITCH SENSE
13 - -
14 - -
15 L27 22WT/TN FOG LAMP SWITCH SENSE
16 - -
17 G18 20PK/BK COOLANT LEVEL SWITCH SENSE
18 P132 20OR/BK SEAT HEATER SWITCH SENSOR GROUND
19 X10 20RD/BK RADIO CONTROL MUX RETURN
20 G39 20DB/OR AMBIENT TEMPERATURE SENSOR RETURN
21 L110 20BK/YL ULTRALIGHT SENSOR RETURN
22 V59 22DB/YL WINDSHIELD WIPER SWITCH RETURN
BOOST PRESSURE SENSOR (DIESEL) - BLACK 4 WAY
CAV CIRCUIT FUNCTION
1 K121 18BK/VT SENSOR GROUND
2 K21 18BK/RD INTAKE AIR TEMPERATURE SENSOR SIGNAL
3 K70 18OR/WT 5V SUPPLY
4 K22 18OR/DB BOOST PRESSURE SENSOR SIGNAL
WJ8Wa-80 CONNECTOR PIN-OUTS 8Wa - 80 - 9

CONTROLLER ANTILOCK BRAKE - BLACK 25 WAY
CAV CIRCUIT FUNCTION
1 B9 18RD LEFT FRONT WHEEL SPEED SENSOR SIGNAL
2 B8 18RD/DB LEFT FRONT WHEEL SPEED SENSOR 12VOLT SUP-
PLY
3 G7 18WaT/OR VEHICLE SPEED SENSOR SIGNAL
4 F20 18DB/PK FUSED IGNITION SWITCH OUTPUT (RUN)
5 B4 18LG LEFT REAR WHEEL SPEED SENSOR SIGNAL
6 B3 18LG/DB LEFT REAR WHEEL SPEED SENSOR 12VOLT SUPPLY
7- -
8 Z3 12BK/OR GROUND
9 A20 12RD/DB FUSED B(+)
10 D25 18YL/VT PCI BUS
11 - -
12 Z1 18BK GROUND
13 B43 18PK/OR G SWITCH TEST SIGNAL
14 B41 18YL/PK G SWITCH NO. 1 SENSE
15 - -
16 - -
17 B42 18TN/WT G SWITCH NO. 2 SENSE
18 L50 18WaT/TN PRIMARY BRAKE SWITCH SIGNAL
19 B7 18WaT RIGHT FRONT WHEEL SPEED SENSOR SIGNAL
20 B6 18WaT/DB RIGHT FRONT WHEEL SPEED SENSOR 12VOLT SUP-
PLY
21 G9 18GY/BK BRAKE FLUID LEVEL SWITCH SENSE
22 B1 18YL/DB RIGHT REAR WHEEL SPEED SENSOR 12VOLT SUP-
PLY
23 B2 18YL RIGHT REAR WHEEL SPEED SENSOR SIGNAL
24 Z3 12BK/OR GROUND
25 A10 12RD/DG FUSED B(+)
COOLANT LEVEL SENSOR - LT. GRAY 2 WAY
CAV CIRCUIT FUNCTION
1 G18 20PK/BK COOLANT LEVEL SWITCH SENSE
2 Z1 20BK GROUND
WJ8Wa-80 CONNECTOR PIN-OUTS 8Wa - 80 - 53

ENGINE CONTROL MODULE C2 (DIESEL) - GRAY 28 WAY
CAV CIRCUIT FUNCTION
53 K156 18GY FUEL TEMPERATURE SENSOR SIGNAL
54 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
55 K68 18LG/YL NEEDLE MOVEMENT SENSOR SIGNAL
56 K134 18LB/BK REFERENCE COIL
57 K57 18LG/OR CONTROL SLEEVE POSITION SENSOR SIGNAL
58 K135 18WaT/BK MEASURE COIL
59 K140 18TN/WT FUEL QUANTITY ACTUATOR CONTROL
60 - -
61 K121 18BK/VT FUEL TEMPERATURE SENSOR GROUND
62 K67 18BR/BK NEEDLE MOVEMENT SENSOR GROUND
63 - -
64 - -
65 - -
66 K140 18TN/WT FUEL QUANTITY ACTUATOR CONTROL
67 K24 18GY/BK ENGINE SPEED SENSOR SIGNAL
68 - -
69 Z3 18BK/OR GROUND
70 - -
71 - -
72 - -
73 - -
74 - -
75 - -
76 - -
77 K153 18OR FUEL SHUT DOWN SOLENOID CONTROL
78 - -
79 K238 18VT FUEL TIMING SOLENOID CONTROL
80 K140 18TN/WT FUEL QUANTITY ACTUATOR CONTROL
8Wa - 80 - 62 8Wa-80 CONNECTOR PIN-OUTSWJ

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