Jeep Grand Cherokee WK. Manual — part 1663
Fig. 158 BODY - COMPLETE (7 OF 7)
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BODY STRUCTURE
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HEATING & AIR CONDITIONING
TABLE OF CONTENTS
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HVAC - ELECTRICAL DIAGNOSTICS. . . . . . . . . . . . 1
HVAC - SERVICE INFORMATION . . . . . . . . . . . . 363
HVAC - ELECTRICAL DIAGNOSTICS
TABLE OF CONTENTS
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HVAC - ELECTRICAL DIAGNOSTICS
(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SMALL (MTC) . . . . . . . . . . . . . . . . . . . . . . . . 14
LARGE (MTC) . . . . . . . . . . . . . . . . . . . . . . . . 17
SMALL (MTC) . . . . . . . . . . . . . . . . . . . . . . . . 20
LARGE (MTC) . . . . . . . . . . . . . . . . . . . . . . . . 23
31–EVAPORATOR SENSOR OPEN (MTC)
(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
33–A/C MODE SWITCH STUCK (MTC)
34–EBL MODE SWITCH STUCK (MTC)
36–EEPROM CHECKSUM ERROR (MTC)
41–FRONT MODE OVERCURRENT (MTC)
42–REAR MODE OVERCURRENT (MTC)
46–FRONT MODE DOOR BOUND (MTC)
51–RECIRC DOOR RANGE TOO SMALL
(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
52–RECIRC DOOR RANGE TOO LARGE
(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
BROKEN (MTC) . . . . . . . . . . . . . . . . . . . . . . 117
54–REAR MODE DOOR LINKAGE BROKEN
(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
55–BLEND DOOR LINKAGE BROKEN (MTC)
(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
SHORTED TO GROUND (MTC) . . . . . . . . . . 129
SHORTED TO IGNITION (MTC) . . . . . . . . . . 139
63–FRONT MODE DOOR DRIVER CIRCUIT
SHORTED TO GROUND (MTC) . . . . . . . . . . 142
64–FRONT MODE DOOR DRIVER CIRCUIT
SHORTED TO IGNITION (MTC) . . . . . . . . . . 146
65–REAR MODE DOOR DRIVER CIRCUIT
SHORTED TO GROUND (MTC) . . . . . . . . . . 149
66–REAR MODE DOOR DRIVER CIRCUIT
SHORTED TO IGNITION (MTC) . . . . . . . . . . 153
SHORTED TO GROUND (MTC) . . . . . . . . . . 156
SHORTED TO IGNITION (MTC) . . . . . . . . . . 160
SHORTED TO GROUND (MTC) . . . . . . . . . . 163
SHORTED TO IGNITION (MTC) . . . . . . . . . . 167
73–AC REQUEST OUTPUT SIGNAL TOO
HIGH (MTC) . . . . . . . . . . . . . . . . . . . . . . . . . 181
74–AC REQUEST OUTPUT SIGNAL TOO
LOW (MTC) . . . . . . . . . . . . . . . . . . . . . . . . . 184
75–AC REQUEST OUTPUT SIGNAL HIGH
WHEN DRIVEN LOW (MTC) . . . . . . . . . . . . . 187
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HEATING & AIR CONDITIONING
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76–AC REQUEST OUTPUT SIGNAL LOW
WHEN DRIVEN HIGH (MTC) . . . . . . . . . . . . 187
81–BLOWER NOT ON HIGH AT START OF
COOLDOWN TEST (MTC) . . . . . . . . . . . . . . 191
COOLDOWN TEST (MTC) . . . . . . . . . . . . . . 195
COOLDOWN TEST (MTC) . . . . . . . . . . . . . . 199
84–SENSOR FAILED SHORTED DURING
COOLDOWN TEST (MTC) . . . . . . . . . . . . . . 199
COOLDOWN TEST (MTC) . . . . . . . . . . . . . . 200
B10AA–RIGHT BLEND DOOR CONTROL
CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 204
B10AB–RIGHT BLEND DOOR CONTROL
CIRCUIT HIGH (ATC) . . . . . . . . . . . . . . . . . . 209
B10AC–RIGHT BLEND DOOR CONTROL
CIRCUIT OPEN (ATC) . . . . . . . . . . . . . . . . . 212
RANGE TOO SMALL (ATC) . . . . . . . . . . . . . 215
RANGE TOO LARGE (ATC) . . . . . . . . . . . . . 217
B10AF–RIGHT BLEND DOOR ACTUATOR
PERFORMANCE (ATC) . . . . . . . . . . . . . . . . 219
B10A0–PANEL MODE DOOR 2 TRAVEL
RANGE TOO LARGE (ATC) . . . . . . . . . . . . . 221
B10A1–PANEL MODE DOOR 2 ACTUATOR
PERFORMANCE (ATC) . . . . . . . . . . . . . . . . 223
CIRCUIT/PERFORMANCE (ATC) . . . . . . . . . 225
CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 226
CIRCUIT HIGH (ATC) . . . . . . . . . . . . . . . . . . 231
CIRCUIT OPEN (ATC) . . . . . . . . . . . . . . . . . 234
RANGE TOO SMALL (ATC) . . . . . . . . . . . . . 237
RANGE TOO LARGE (ATC) . . . . . . . . . . . . . 239
B10A8–LEFT BLEND DOOR ACTUATOR
PERFORMANCE (ATC) . . . . . . . . . . . . . . . . 241
B10A9–RIGHT BLEND DOOR CONTROL
CIRCUIT/PERFORMANCE (ATC) . . . . . . . . . 243
B10B0–INFRARED SENSOR THERMISTOR
CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 244
B10B1–INFRARED SENSOR THERMISTOR
CIRCUIT HIGH (ATC) . . . . . . . . . . . . . . . . . . 245
PERFORMANCE (ATC) . . . . . . . . . . . . . . . . 246
REQUEST INPUT CIRCUIT LOW (ATC) . . . . 247
B105A–RECIRCULATION DOOR CONTROL
CIRCUIT HIGH (ATC) . . . . . . . . . . . . . . . . . . 249
B105B–RECIRCULATION DOOR CONTROL
CIRCUIT OPEN (ATC) . . . . . . . . . . . . . . . . . 252
B105C–RECIRCULATION DOOR TRAVEL
RANGE TOO SMALL (ATC) . . . . . . . . . . . . . 255
B105D–RECIRCULATION DOOR TRAVEL
RANGE TOO LARGE (ATC) . . . . . . . . . . . . . 257
CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 259
CIRCUIT HIGH (ATC) . . . . . . . . . . . . . . . . . . 262
B109B–PANEL MODE DOOR 2 CONTROL
CIRCUIT/PERFORMANCE (ATC) . . . . . . . . . 265
B109C–PANEL MODE DOOR 2 CONTROL
CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 266
B109D–PANEL MODE DOOR 2 CONTROL
CIRCUIT HIGH (ATC) . . . . . . . . . . . . . . . . . . 271
B109E–PANEL MODE DOOR 2 CONTROL
CIRCUIT OPEN (ATC) . . . . . . . . . . . . . . . . . 274
B109F–PANEL MODE DOOR 2 TRAVEL
RANGE TOO SMALL (ATC) . . . . . . . . . . . . . 277
B222A–VEHICLE LINE MISMATCH (ATC)
B1001–A/C SWITCH REQUEST INPUT
CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 280
B1016–REAR DEFROST SWITCH REQUEST
INPUT CIRCUIT LOW (ATC) . . . . . . . . . . . . . 282
B1031–EVAPORATOR FIN TEMPERATURE
SENSOR CIRCUIT LOW (ATC) . . . . . . . . . . . 284
B1032–EVAPORATOR FIN TEMPERATURE
SENSOR CIRCUIT HIGH (ATC) . . . . . . . . . . 287
B1034–INFRARED TEMPERATURE SENSOR
INPUT CIRCUIT LOW (ATC) . . . . . . . . . . . . . 291
B1035–INFRARED TEMPERATURE SENSOR
INPUT CIRCUIT HIGH (ATC) . . . . . . . . . . . . 292
B1036–INFRARED SENSOR PERIOD TOO
LONG OR TOO SHORT (ATC) . . . . . . . . . . . 293
B1040–PANEL MODE DOOR 1 CONTROL
CIRCUIT/PERFORMANCE (ATC) . . . . . . . . . 294
B1041–PANEL MODE DOOR 1 CONTROL
CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 295
B1042–PANEL MODE DOOR 1 CONTROL
CIRCUIT HIGH (ATC) . . . . . . . . . . . . . . . . . . 300
B1043–PANEL MODE DOOR 1 CONTROL
CIRCUIT OPEN (ATC) . . . . . . . . . . . . . . . . . 303
B1044–PANEL MODE DOOR 1 TRAVEL
RANGE TOO SMALL (ATC) . . . . . . . . . . . . . 306
B1045–PANEL MODE DOOR 1 TRAVEL
RANGE TOO LARGE (ATC) . . . . . . . . . . . . . 308
B1058–RECIRCULATION DOOR CONTROL
CIRCUIT/PERFORMANCE (ATC) . . . . . . . . . 310
B1059–RECIRCULATION DOOR CONTROL
CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 311
B1601–LEFT SOLAR SENSOR CIRCUIT
LOW (ATC) . . . . . . . . . . . . . . . . . . . . . . . . . . 323
B1602–LEFT SOLAR SENSOR CIRCUIT
HIGH (ATC) . . . . . . . . . . . . . . . . . . . . . . . . . 326
B1604–RIGHT SOLAR SENSOR CIRCUIT
LOW (ATC) . . . . . . . . . . . . . . . . . . . . . . . . . . 330
B1605–RIGHT SOLAR SENSOR CIRCUIT
HIGH (ATC) . . . . . . . . . . . . . . . . . . . . . . . . . 333
INTERNAL (ATC) . . . . . . . . . . . . . . . . . . . . . 337
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HVAC - ELECTRICAL DIAGNOSTICS
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. . . . . . . . . . . . . . 338
FRONT CONTROL MODULE (ATC) . . . . . . . 341
OCCUPANT RESTRAINT CONTROLLER
(ORC) (ATC) . . . . . . . . . . . . . . . . . . . . . . . . . 341
OCCUPANT CLASSIFICATION MODULE
(ATC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
CLUSTER/CCN (ATC) . . . . . . . . . . . . . . . . . 341
U0156–LOST COMMUNICATION WITH EOM
(ATC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
PARKING ASSIST CONTROL MODULE
(ATC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
INTRUSION TRANSCEIVER CONTROL
MODULE (ATC) . . . . . . . . . . . . . . . . . . . . . . 342
VEHICLE SECURITY CONTROL MODULE
(SKREEM/WCM) (ATC) . . . . . . . . . . . . . . . . . 342
SUNROOF CONTROL MODULE (ATC) . . . . . 343
RADIO (ATC) . . . . . . . . . . . . . . . . . . . . . . . . 343
AUDIO AMPLIFIER (ATC) . . . . . . . . . . . . . . . 343
SDARS (ATC) . . . . . . . . . . . . . . . . . . . . . . . . 343
VEHICLE ENTERTAINMENT CONTROL
MODULE (ATC) . . . . . . . . . . . . . . . . . . . . . . 344
HANDS FREE PHONE MODULE (ATC) . . . . 344
DRIVER DOOR MODULE (ATC) . . . . . . . . . . 344
PASSENGER DOOR MODULE (ATC) . . . . . . 344
HEATED SEAT CONTROL MODULE (ATC) . . 345
MEMORY SEAT CONTROL MODULE (ATC) . 345
SCCM - CAN-B (ATC) . . . . . . . . . . . . . . . . . . 345
U0231–LOST COMMUNICATION WITH RAIN
SENSING MODULE (ATC) . . . . . . . . . . . . . . 345
U0241–LOST COMMUNICATION WITH AUTO
HIGHBEAM HEADLAMP CONTROL
MODULE (ATC) . . . . . . . . . . . . . . . . . . . . . . 346
*A/C HEATER CONTROL WILL NOT ENTER
DIAGNOSTIC MODE (MTC) . . . . . . . . . . . . . 355
HVAC - ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
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HVAC - ELECTRICAL DIAGNOSTICS
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