Index Jeep Jeep Grand Cherokee WK - service repair manual 2005 year

Content .. 1661 1662 1663 1664 ..

Jeep Grand Cherokee WK. Manual - part 1663

Fig. 158 BODY - COMPLETE (7 OF 7)

23 - 310

BODY STRUCTURE

WK

HEATING & AIR CONDITIONING

TABLE OF CONTENTS

page

page

HVAC - ELECTRICAL DIAGNOSTICS. . . . . . . . . . . . 1

HVAC - SERVICE INFORMATION . . . . . . . . . . . . 363

HVAC - ELECTRICAL DIAGNOSTICS

TABLE OF CONTENTS

page

page

HVAC - ELECTRICAL DIAGNOSTICS

DIAGNOSIS AND TESTING

11–MODE POT OPEN (MTC)

. . . . . . . . . . . . . . 4

12–MODE POT SHORTED (MTC)

. . . . . . . . . . 5

13–TEMP POT OPEN (MTC)

. . . . . . . . . . . . . . 6

14–TEMP POT SHORTED (MTC)

. . . . . . . . . . . 7

18–BLEND DOOR RANGE TOO SMALL

(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

21–BLEND DOOR RANGE TOO LARGE

(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

22–FRONT MODE DOOR RANGE TOO

SMALL (MTC) . . . . . . . . . . . . . . . . . . . . . . . . 14

23–FRONT MODE DOOR RANGE TOO

LARGE (MTC) . . . . . . . . . . . . . . . . . . . . . . . . 17

24–REAR MODE DOOR RANGE TOO

SMALL (MTC) . . . . . . . . . . . . . . . . . . . . . . . . 20

25–REAR MODE DOOR RANGE TOO

LARGE (MTC) . . . . . . . . . . . . . . . . . . . . . . . . 23

31–EVAPORATOR SENSOR OPEN (MTC)

32–EVAPORATOR SENSOR SHORTED

(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

33–A/C MODE SWITCH STUCK (MTC)

34–EBL MODE SWITCH STUCK (MTC)

35–FAILED COOL DOWN (MTC)

. . . . . . . . . . 40

36–EEPROM CHECKSUM ERROR (MTC)

37–ROM CHECKSUM ERROR (MTC)

41–FRONT MODE OVERCURRENT (MTC)

42–REAR MODE OVERCURRENT (MTC)

43–BLEND OVERCURRENT (MTC)

. . . . . . . . 65

44–RECIRC OVERCURRENT (MTC)

. . . . . . . 76

45–BLEND DOOR BOUND (MTC)

. . . . . . . . . 87

46–FRONT MODE DOOR BOUND (MTC)

47–RECIRC DOOR BOUND (MTC)

. . . . . . . . 99

48–REAR MODE DOOR BOUND (MTC)

51–RECIRC DOOR RANGE TOO SMALL

(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

52–RECIRC DOOR RANGE TOO LARGE

(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

53–FRONT MODE DOOR LINKAGE

BROKEN (MTC) . . . . . . . . . . . . . . . . . . . . . . 117

54–REAR MODE DOOR LINKAGE BROKEN

(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

55–BLEND DOOR LINKAGE BROKEN (MTC)

56–RECIRC DOOR LINKAGE BROKEN

(MTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

61–COMMON DOOR DRIVER CIRCUIT

SHORTED TO GROUND (MTC) . . . . . . . . . . 129

62–COMMON DOOR DRIVER CIRCUIT

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

67–BLEND DOOR DRIVER CIRCUIT

SHORTED TO GROUND (MTC) . . . . . . . . . . 156

68–BLEND DOOR DRIVER CIRCUIT

SHORTED TO IGNITION (MTC) . . . . . . . . . . 160

69–RECIRC DOOR DRIVER CIRCUIT

SHORTED TO GROUND (MTC) . . . . . . . . . . 163

71–RECIRC DOOR DRIVER CIRCUIT

SHORTED TO IGNITION (MTC) . . . . . . . . . . 167

72–SHORT TOO COMPLEX (MTC)

. . . . . . . 170

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

WK

HEATING & AIR CONDITIONING

24 - 1

76–AC REQUEST OUTPUT SIGNAL LOW

WHEN DRIVEN HIGH (MTC) . . . . . . . . . . . . 187

77–EBL OUTPUT SHORTED HIGH

. . . . . . . 188

81–BLOWER NOT ON HIGH AT START OF

COOLDOWN TEST (MTC) . . . . . . . . . . . . . . 191

82–SENSOR TOO COLD TO START

COOLDOWN TEST (MTC) . . . . . . . . . . . . . . 195

83–SENSOR FAILED OPEN DURING

COOLDOWN TEST (MTC) . . . . . . . . . . . . . . 199

84–SENSOR FAILED SHORTED DURING

COOLDOWN TEST (MTC) . . . . . . . . . . . . . . 199

85–BLOWER NOT ON HIGH DURING

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

B10AD–RIGHT BLEND DOOR TRAVEL

RANGE TOO SMALL (ATC) . . . . . . . . . . . . . 215

B10AE–RIGHT BLEND DOOR TRAVEL

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

B10A2–LEFT BLEND DOOR CONTROL

CIRCUIT/PERFORMANCE (ATC) . . . . . . . . . 225

B10A3–LEFT BLEND DOOR CONTROL

CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 226

B10A4–LEFT BLEND DOOR CONTROL

CIRCUIT HIGH (ATC) . . . . . . . . . . . . . . . . . . 231

B10A5–LEFT BLEND DOOR CONTROL

CIRCUIT OPEN (ATC) . . . . . . . . . . . . . . . . . 234

B10A6–LEFT BLEND DOOR TRAVEL

RANGE TOO SMALL (ATC) . . . . . . . . . . . . . 237

B10A7–LEFT BLEND DOOR TRAVEL

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

B10B2–A/C COOL DOWN TEST

PERFORMANCE (ATC) . . . . . . . . . . . . . . . . 246

B100A–RECIRCULATION SWITCH

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

B106B–REAR DEFROST CONTROL

CIRCUIT LOW (ATC) . . . . . . . . . . . . . . . . . . 259

B106C–REAR DEFROST CONTROL

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

B1082–HVAC MUX CIRCUIT LOW

. . . . . . . . 316

B1083–HVAC MUX CIRCUIT HIGH

. . . . . . . . 319

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

B2214–(HVAC) CLIMATE CONTROL

INTERNAL (ATC) . . . . . . . . . . . . . . . . . . . . . 337

24 - 2

HVAC - ELECTRICAL DIAGNOSTICS

WK

U0019–CAN B BUS (ATC)

. . . . . . . . . . . . . . 338

U0141–LOST COMMUNICATION WITH

FRONT CONTROL MODULE (ATC) . . . . . . . 341

U0151–LOST COMMUNICATION WITH

OCCUPANT RESTRAINT CONTROLLER
(ORC) (ATC) . . . . . . . . . . . . . . . . . . . . . . . . . 341

U0154–LOST COMMUNICATION WITH

OCCUPANT CLASSIFICATION MODULE
(ATC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341

U0155–LOST COMMUNICATION WITH

CLUSTER/CCN (ATC) . . . . . . . . . . . . . . . . . 341

U0156–LOST COMMUNICATION WITH EOM

(ATC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342

U0159–LOST COMMUNICATION WITH

PARKING ASSIST CONTROL MODULE
(ATC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342

U0167–LOST COMMUNICATION WITH

INTRUSION TRANSCEIVER CONTROL
MODULE (ATC) . . . . . . . . . . . . . . . . . . . . . . 342

U0168–LOST COMMUNICATION WITH

VEHICLE SECURITY CONTROL MODULE
(SKREEM/WCM) (ATC) . . . . . . . . . . . . . . . . . 342

U0169–LOST COMMUNICATION WITH

SUNROOF CONTROL MODULE (ATC) . . . . . 343

U0184–LOST COMMUNICATION WITH

RADIO (ATC) . . . . . . . . . . . . . . . . . . . . . . . . 343

U0186–LOST COMMUNICATION WITH

AUDIO AMPLIFIER (ATC) . . . . . . . . . . . . . . . 343

U0195–LOST COMMUNICATION WITH

SDARS (ATC) . . . . . . . . . . . . . . . . . . . . . . . . 343

U0196–LOST COMMUNICATION WITH

VEHICLE ENTERTAINMENT CONTROL
MODULE (ATC) . . . . . . . . . . . . . . . . . . . . . . 344

U0197–LOST COMMUNICATION WITH

HANDS FREE PHONE MODULE (ATC) . . . . 344

U0199–LOST COMMUNICATION WITH

DRIVER DOOR MODULE (ATC) . . . . . . . . . . 344

U0200–LOST COMMUNICATION WITH

PASSENGER DOOR MODULE (ATC) . . . . . . 344

U0208–LOST COMMUNICATION WITH

HEATED SEAT CONTROL MODULE (ATC) . . 345

U0209–LOST COMMUNICATION WITH

MEMORY SEAT CONTROL MODULE (ATC) . 345

U0212–LOST COMMUNICATION WITH

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

*HVAC SYSTEM TEST (ATC)

. . . . . . . . . . . . 347

*HVAC SYSTEM TEST (MTC)

. . . . . . . . . . . 351

*A/C HEATER CONTROL WILL NOT ENTER

DIAGNOSTIC MODE (MTC) . . . . . . . . . . . . . 355

SCHEMATICS AND DIAGRAMS

. . . . . . . . . . . 361

HVAC - ELECTRICAL DIAGNOSTICS

DIAGNOSIS AND TESTING

WK

HVAC - ELECTRICAL DIAGNOSTICS

24 - 3

Content .. 1661 1662 1663 1664 ..