Nissan Quest E52. Instruction — part 718

HAC-2

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Circuit Diagram . . . . . . . . . . ...
.

31

ACCS (ADVANCED CLIMATE CONTROL SYS-
TEM) . . . . . . . . . . . . . . . . . . .
.

31

ACCS (ADVANCED CLIMATE CONTROL SYS-
TEM) : System Description . . . . . . . . .
.

32

ACCS (ADVANCED CLIMATE CONTROL SYS-
TEM) : Circuit Diagram . . . . . . . . . . ..
.

33

OPERATION . . . . . . . . . . . . . ..

34

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . . . ..
.

34

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Switch Name and Function . . . . . . .
.

34

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . . . ..
.

39

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Switch Name and Function . . . . . . .
.

39

ACCS (ADVANCED CLIMATE CONTROL SYS-
TEM) . . . . . . . . . . . . . . . . . . .
.

44

ACCS (ADVANCED CLIMATE CONTROL SYS-
TEM) : Switch Name and Function . . . . . .
.

44

DIAGNOSIS SYSTEM (A/C AUTO AMP.) . . .

47

Description . . . . . . . . . . . . . . . ..

47

On Board Diagnosis Function . . . . . . . . .

47

DIAGNOSIS SYSTEM (BCM) . . . . . . .

53

COMMON ITEM . . . . . . . . . . . . . ....

53

COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) . . . . . . . . . . . . ...
.

53

AIR CONDITIONER . . . . . . . . . . . . ..

54

AIR CONDITIONER : CONSULT Function (BCM -
AIR CONDITIONER) (Auto A/C) . . . . . . .
.

55

ECU DIAGNOSIS INFORMATION . . . ..

56

A/C AUTO AMP. . . . . . . . . . . . .

56

Reference Value . . . . . . . . . . . . . .

56

BCM, ECM, IPDM E/R . . . . . . . . . ...

60

List of ECU Reference . . . . . . . . . . ....

60

WIRING DIAGRAM . . . . . . . . . .

61

AUTOMATIC AIR CONDITIONING SYSTEM ...

61

Wiring Diagram . . . . . . . . . . . . . ...

61

BASIC INSPECTION . . . . . . . . ...

73

DIAGNOSIS AND REPAIR WORK FLOW . .

73

Work Flow . . . . . . . . . . . . . . . ...

73

OPERATION INSPECTION . . . . . . . ...

76

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . . . ..
.

76

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Work Procedure . . . . . . . . . . ...

76

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . . . ...

78

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Work Procedure . . . . . . . . . . ...

78

ACCS (ADVANCED CLIMATE CONTROL SYS-
TEM) . . . . . . . . . . . . . . . . . . ..

80

ACCS (ADVANCED CLIMATE CONTROL SYS-
TEM) : Work Procedure . . . . . . . . . . ..

80

SYSTEM SETTING . . . . . . . . . . .

82

Temperature Setting Trimmer (Front) . . . . . .

82

Temperature Setting Trimmer (Rear) . . . . . ..

83

Foot Position Setting Trimmer . . . . . . . .

84

Inlet Port Memory Function . . . . . . . . . .

84

Exhaust Gas/Outside Odor Detecting Sensor
Sensitivity Adjustment Function . . . . . . . ..

85

AUTO Intake Switch Interlocking Movement
Change Function . . . . . . . . . . . . . .

85

DTC/CIRCUIT DIAGNOSIS . . . . . .

87

POWER SUPPLY AND GROUND CIRCUIT . .

87

A/C AUTO AMP. . . . . . . . . . . . . . .

87

A/C AUTO AMP. : Diagnosis Procedure . . . . .

87

REAR A/C CONTROL . . . . . . . . . . . ...

88

REAR A/C CONTROL : Diagnosis Procedure . .

88

A/C AUTO AMP. . . . . . . . . . . . .

90

Component Function Check . . . . . . . . ...

90

Diagnosis Procedure . . . . . . . . . . . ...

90

REAR A/C CONTROL COMMUNICATION
SIGNAL . . . . . . . . . . . . . . . ..

91

Diagnosis Procedure . . . . . . . . . . . ...

91

AMBIENT SENSOR . . . . . . . . . . ...

94

Diagnosis Procedure . . . . . . . . . . . ...

94

Component Inspection . . . . . . . . . . .

95

FRONT IN-VEHICLE SENSOR . . . . . . .

96

Diagnosis Procedure . . . . . . . . . . . ...

96

Component Inspection . . . . . . . . . . .

97

INTAKE SENSOR . . . . . . . . . . . ..

98

Diagnosis Procedure . . . . . . . . . . . ...

98

Component Inspection . . . . . . . . . . .

99

SUNLOAD SENSOR . . . . . . . . . .

100

Diagnosis Procedure . . . . . . . . . . . .

100

REAR IN-VEHICLE SENSOR . . . . . . ..

102

Diagnosis Procedure . . . . . . . . . . . .

102

Component Inspection . . . . . . . . . . ..

103

EXHAUST GAS/OUTSIDE ODOR DETECT-
ING SENSOR . . . . . . . . . . . . .

104

Diagnosis Procedure . . . . . . . . . . . .

104

HAC-3

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

FRONT AIR MIX DOOR MOTOR (DRIVER
SIDE) . . . . . . . . . . . . . . . .

106

Diagnosis Procedure . . . . . . . . . . . .

106

FRONT AIR MIX DOOR MOTOR (PASSEN-
GER SIDE) . . . . . . . . . . . . . .

108

Diagnosis Procedure . . . . . . . . . . . .

108

FRONT MODE DOOR MOTOR . . . . . .

110

Diagnosis Procedure . . . . . . . . . . . .

110

INTAKE DOOR MOTOR . . . . . . . . ..

112

Diagnosis Procedure . . . . . . . . . . . .

112

REAR AIR MIX DOOR MOTOR . . . . . ...

114

Diagnosis Procedure . . . . . . . . . . . .

114

REAR MODE DOOR MOTOR . . . . . . ..

116

Diagnosis Procedure . . . . . . . . . . . .

116

DOOR MOTOR . . . . . . . . . . . . .

118

Diagnosis Procedure . . . . . . . . . . . .

118

A/C ON SIGNAL . . . . . . . . . . . ...

121

Component Function Check . . . . . . . . ..

121

Diagnosis Procedure . . . . . . . . . . . .

121

BLOWER FAN ON SIGNAL . . . . . . . .

123

Component Function Check . . . . . . . . ..

123

Diagnosis Procedure . . . . . . . . . . . .

123

FRONT BLOWER MOTOR . . . . . . . ..

125

Diagnosis Procedure . . . . . . . . . . . .

125

Component Inspection (Front Blower Motor) . .

126

Component Inspection (Front Blower Relay) . .

127

REAR BLOWER MOTOR . . . . . . . .

128

Diagnosis Procedure . . . . . . . . . . . .

128

Component Inspection (Rear Blower Motor) . . .

129

Component Inspection (Rear Blower Relay) . . .

130

MAGNET CLUTCH . . . . . . . . . . ...

131

Component Function Check . . . . . . . . ..

131

Diagnosis Procedure . . . . . . . . . . . .

131

IONIZER . . . . . . . . . . . . . . ...

132

Diagnosis Procedure . . . . . . . . . . . .

132

SYMPTOM DIAGNOSIS . . . . . . .

134

FRONT AUTOMATIC AIR CONDITIONING
SYSTEM . . . . . . . . . . . . . . ...

134

Symptom Table . . . . . . . . . . . . . .

134

REAR AUTOMATIC AIR CONDITIONING
SYSTEM . . . . . . . . . . . . . . ...

136

Symptom Table . . . . . . . . . . . . . .

136

ACCS (ADVANCED CLIMATE CONTROL
SYSTEM) . . . . . . . . . . . . . . ..

137

Symptom Table . . . . . . . . . . . . . .

137

INSUFFICIENT COOLING . . . . . . . ..

138

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . . . ..

138

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Description . . . . . . . . . . . . ..

138

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Diagnosis Procedure . . . . . . . . ...

138

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . . . ..

139

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Description . . . . . . . . . . . . ..

139

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Diagnosis Procedure . . . . . . . . ...

139

INSUFFICIENT HEATING . . . . . . . ...

140

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . . . ..

140

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Description . . . . . . . . . . . . ..

140

FRONT AUTOMATIC AIR CONDITIONING SYS-
TEM : Diagnosis Procedure . . . . . . . . ...

140

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . . . ..

140

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Description . . . . . . . . . . . . ..

141

REAR AUTOMATIC AIR CONDITIONING SYS-
TEM : Diagnosis Procedure . . . . . . . . ...

141

COMPRESSOR DOES NOT OPERATE . . .

142

Description . . . . . . . . . . . . . . . .

142

Diagnosis Procedure . . . . . . . . . . . .

142

REMOVAL AND INSTALLATION . . . .

143

FRONT A/C CONTROL . . . . . . . . ..

143

Removal and Installation . . . . . . . . . ...

143

REAR A/C CONTROL . . . . . . . . . .

144

Removal and Installation . . . . . . . . . ...

144

AMBIENT SENSOR . . . . . . . . . .

145

Removal and Installation . . . . . . . . . ...

145

IN-VEHICLE SENSOR . . . . . . . . .

146

Removal and Installation . . . . . . . . . ...

146

SUNLOAD SENSOR . . . . . . . . . ...

147

Removal and Installation . . . . . . . . . ...

147

INTAKE SENSOR . . . . . . . . . . ...

148

Removal and Installation . . . . . . . . . ...

148

EXHAUST GAS/OUTSIDE ODOR SENSOR ..

149

Removal and Installation . . . . . . . . . ...

149

REFRIGERANT PRESSURE SENSOR . . ..

150

Exploded View . . . . . . . . . . . . . ...

150

Removal and Installation . . . . . . . . . ...

150

HAC-4

DOOR MOTOR . . . . . . . . . . . .

151

Exploded View . . . . . . . . . . . . . ...

151

FRONT MODE DOOR MOTOR . . . . . . . ...

151

FRONT MODE DOOR MOTOR : Removal and In-
stallation . . . . . . . . . . . . . . . .

151

FRONT AIR MIX DOOR MOTOR . . . . . . . .

152

FRONT AIR MIX DOOR MOTOR : Removal and
Installation . . . . . . . . . . . . . . . .

152

INTAKE DOOR MOTOR . . . . . . . . . . ..

153

INTAKE DOOR MOTOR : Removal and Installa-
tion . . . . . . . . . . . . . . . . . . .

153

REAR MODE DOOR MOTOR . . . . . . . . ..

153

REAR MODE DOOR MOTOR : Removal and In-
stallation . . . . . . . . . . . . . . . .

153

REAR AIR MIX DOOR MOTOR . . . . . . . ...

153

REAR AIR MIX DOOR MOTOR : Removal and In-
stallation . . . . . . . . . . . . . . . .

153

IONIZER . . . . . . . . . . . . . . ...

155

Exploded View . . . . . . . . . . . . . ...

155

Removal and Installation . . . . . . . . . ...

155

MANUAL AIR CONDITIONING

PRECAUTION . . . . . . . . . . .

156

PRECAUTIONS . . . . . . . . . . . ...

156

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . .

156

Precautions for Removing Battery Terminal . . ..

156

SYSTEM DESCRIPTION . . . . . . ...

157

COMPONENT PARTS . . . . . . . . . .

157

Component Parts Location . . . . . . . . .

157

BLOWER UNIT ASSEMBLY . . . . . . . . ...

158

BLOWER UNIT ASSEMBLY : Intake Door Motor ..

158

BLOWER UNIT ASSEMBLY : Front Blower Motor ..

158

HEATER & COOLING UNIT ASSEMBLY . . . ...

159

HEATER & COOLING UNIT ASSEMBLY : Intake
Sensor . . . . . . . . . . . . . . . . ...

159

HEATER & COOLING UNIT ASSEMBLY : Front
Air Mix Door Motor . . . . . . . . . . . . .

159

HEATER & COOLING UNIT ASSEMBLY : Front
Mode Door Motor . . . . . . . . . . . . ...

159

REAR A/C UNIT ASSEMBLY . . . . . . . . ..

159

REAR A/C UNIT ASSEMBLY : Rear Air Mix Door
Motor . . . . . . . . . . . . . . . . . .

159

REAR A/C UNIT ASSEMBLY : Rear Mode Door
Motor . . . . . . . . . . . . . . . . . .

159

REAR A/C UNIT ASSEMBLY : Rear Blower Motor

..

160

Front A/C Control (A/C Amp.) . . . . . . . .

160

Rear A/C Control . . . . . . . . . . . . ...

160

Refrigerant Pressure Sensor . . . . . . . .

160

Magnet Clutch . . . . . . . . . . . . . ...

161

SYSTEM . . . . . . . . . . . . . . ...

162

FRONT MANUAL AIR CONDITIONING SYSTEM ..

162

FRONT MANUAL AIR CONDITIONING SYSTEM
: System Description . . . . . . . . . . . .

162

FRONT MANUAL AIR CONDITIONING SYSTEM
: Air Flow Control . . . . . . . . . . . . ..

163

FRONT MANUAL AIR CONDITIONING SYSTEM
: Air Inlet Control . . . . . . . . . . . . ...

163

FRONT MANUAL AIR CONDITIONING SYSTEM
: Compressor Control . . . . . . . . . . .

163

FRONT MANUAL AIR CONDITIONING SYSTEM
: Door Control . . . . . . . . . . . . . .

164

FRONT MANUAL AIR CONDITIONING SYSTEM
: Circuit Diagram . . . . . . . . . . . . ...

166

REAR MANUAL AIR CONDITIONING SYSTEM .

166

REAR MANUAL AIR CONDITIONING SYSTEM :
System Description . . . . . . . . . . . ...

167

REAR MANUAL AIR CONDITIONING SYSTEM :
Air Flow Control . . . . . . . . . . . . .

167

REAR MANUAL AIR CONDITIONING SYSTEM :
Door Control . . . . . . . . . . . . . . ..

168

REAR MANUAL AIR CONDITIONING SYSTEM :
Circuit Diagram . . . . . . . . . . . . . .

169

OPERATION . . . . . . . . . . . . . .

170

FRONT MANUAL AIR CONDITIONING SYSTEM ..

170

FRONT MANUAL AIR CONDITIONING SYSTEM
: Switch Name and Function . . . . . . . . .

170

REAR MANUAL AIR CONDITIONING SYSTEM .

171

REAR MANUAL AIR CONDITIONING SYSTEM :
Switch Name and Function . . . . . . . . ...

171

DIAGNOSIS SYSTEM (A/C AMP.) . . . . ...

174

Description . . . . . . . . . . . . . . .

174

On Board Diagnosis Function . . . . . . . ...

174

DIAGNOSIS SYSTEM (BCM) . . . . . . ...

175

COMMON ITEM . . . . . . . . . . . . . ...

175

COMMON ITEM : CONSULT Function (BCM -
COMMON ITEM) . . . . . . . . . . . . ..

175

AIR CONDITIONER . . . . . . . . . . . . .

176

AIR CONDITIONER : CONSULT Function (BCM -
AIR CONDITIONER) (Instruction A/C) . . . . . ..

177

ECU DIAGNOSIS INFORMATION . . .

178

A/C AMP. . . . . . . . . . . . . . . ..

178

Reference Value . . . . . . . . . . . . ...

178

BCM, ECM, IPDM E/R . . . . . . . . . ..

181

List of ECU Reference . . . . . . . . . . ..

181

WIRING DIAGRAM . . . . . . . . ...

182

HAC-5

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

MANUAL AIR CONDITIONING SYSTEM . .

182

Wiring Diagram . . . . . . . . . . . . . .

182

BASIC INSPECTION . . . . . . . . .

191

DIAGNOSIS AND REPAIR WORK FLOW . ..

191

Work Flow . . . . . . . . . . . . . . . .

191

OPERATION INSPECTION . . . . . . . ..

194

FRONT MANUAL AIR CONDITIONING SYSTEM ..

194

FRONT MANUAL AIR CONDITIONING SYSTEM
: Work Procedure . . . . . . . . . . . . ..

194

REAR MANUAL AIR CONDITIONING SYSTEM .

195

REAR MANUAL AIR CONDITIONING SYSTEM :
Work Procedure . . . . . . . . . . . . .

195

DTC/CIRCUIT DIAGNOSIS . . . . . ...

199

POWER SUPPLY AND GROUND CIRCUIT .

199

A/C AMP. . . . . . . . . . . . . . . . . .

199

A/C AMP. : Diagnosis Procedure . . . . . . ..

199

REAR A/C CONTROL . . . . . . . . . . . .

200

REAR A/C CONTROL : Diagnosis Procedure . ..

200

REAR A/C CONTROL COMMUNICATION
SIGNAL . . . . . . . . . . . . . . .

201

Diagnosis Procedure . . . . . . . . . . . .

201

INTAKE SENSOR . . . . . . . . . . .

203

Diagnosis Procedure . . . . . . . . . . . .

203

Component Inspection . . . . . . . . . . ..

204

FRONT AIR MIX DOOR MOTOR . . . . . .

205

Diagnosis Procedure . . . . . . . . . . . .

205

FRONT MODE DOOR MOTOR . . . . . .

207

Diagnosis Procedure . . . . . . . . . . . .

207

INTAKE DOOR MOTOR . . . . . . . . ..

209

Diagnosis Procedure . . . . . . . . . . . .

209

REAR AIR MIX DOOR MOTOR . . . . . ...

211

Diagnosis Procedure . . . . . . . . . . . .

211

REAR MODE DOOR MOTOR . . . . . . ..

213

Diagnosis Procedure . . . . . . . . . . . .

213

DOOR MOTOR . . . . . . . . . . . . .

215

Diagnosis Procedure . . . . . . . . . . . .

215

A/C ON SIGNAL . . . . . . . . . . . ...

218

Component Function Check . . . . . . . . ..

218

Diagnosis Procedure . . . . . . . . . . . .

218

BLOWER FAN ON SIGNAL . . . . . . . .

220

Component Function Check . . . . . . . . ..

220

Diagnosis Procedure . . . . . . . . . . . .

220

FRONT BLOWER MOTOR . . . . . . . ..

222

Diagnosis Procedure . . . . . . . . . . . .

222

Component Inspection (Front Blower Motor) . . .

223

Component Inspection (Front Blower Relay) . . .

224

REAR BLOWER MOTOR . . . . . . . ...

225

Diagnosis Procedure . . . . . . . . . . . .

225

Component Inspection (Rear Blower Motor) . . .

226

Component Inspection (Rear Blower Relay) . . .

227

MAGNET CLUTCH . . . . . . . . . . .

228

Component Function Check . . . . . . . . ..

228

Diagnosis Procedure . . . . . . . . . . . .

228

SYMPTOM DIAGNOSIS . . . . . . .

229

FRONT MANUAL AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . .

229

Symptom Table . . . . . . . . . . . . . .

229

REAR MANUAL AIR CONDITIONING SYS-
TEM . . . . . . . . . . . . . . . . .

231

Symptom Table . . . . . . . . . . . . . .

231

INSUFFICIENT COOLING . . . . . . . ..

232

FRONT MANUAL AIR CONDITIONING SYSTEM ..

232

FRONT MANUAL AIR CONDITIONING SYSTEM
: Description . . . . . . . . . . . . . . ...

232

FRONT MANUAL AIR CONDITIONING SYSTEM
: Diagnosis Procedure . . . . . . . . . . ...

232

REAR MANUAL AIR CONDITIONING SYSTEM .

232

REAR MANUAL AIR CONDITIONING SYSTEM :
Description . . . . . . . . . . . . . . . .

232

REAR MANUAL AIR CONDITIONING SYSTEM :
Diagnosis Procedure . . . . . . . . . . . .

232

INSUFFICIENT HEATING . . . . . . . ...

234

FRONT MANUAL AIR CONDITIONING SYSTEM ..

234

FRONT MANUAL AIR CONDITIONING SYSTEM
: Description . . . . . . . . . . . . . . ...

234

FRONT MANUAL AIR CONDITIONING SYSTEM
: Diagnosis Procedure . . . . . . . . . . ...

234

REAR MANUAL AIR CONDITIONING SYSTEM .

234

REAR MANUAL AIR CONDITIONING SYSTEM :
Description . . . . . . . . . . . . . . . .

234

REAR MANUAL AIR CONDITIONING SYSTEM :
Diagnosis Procedure . . . . . . . . . . . .

234

COMPRESSOR DOES NOT OPERATE . . .

236

Description . . . . . . . . . . . . . . . .

236

Diagnosis Procedure . . . . . . . . . . . .

236

REMOVAL AND INSTALLATION . . . .

238

FRONT A/C CONTROL . . . . . . . . ..

238

Removal and Installation . . . . . . . . . ...

238

REAR A/C CONTROL . . . . . . . . . .

239

Removal and Installation . . . . . . . . . ...

239

INTAKE SENSOR . . . . . . . . . . ...

240

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