Nissan Murano. Manual — part 807

HAC-2

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

52

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

53

B2630, B2631 SUNLOAD SENSOR . . . . .

55

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

55

DTC Logic . . . . . . . . . . . . . . . ...

55

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

56

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

57

B2632, B2633 AIR MIX DOOR MOTOR
(DRIVER SIDE) . . . . . . . . . . . . ..

58

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

58

DTC Logic . . . . . . . . . . . . . . . ...

58

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

59

B2634, B2635 AIR MIX DOOR MOTOR (PAS-
SENGER SIDE) . . . . . . . . . . . . ..

60

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

60

DTC Logic . . . . . . . . . . . . . . . ...

60

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

61

B2636, B2637, B2638, B2639, B2654, B2655
MODE DOOR MOTOR . . . . . . . . . ..

62

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

62

DTC Logic . . . . . . . . . . . . . . . ...

62

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

63

B263D, B263E, B263F INTAKE DOOR MO-
TOR . . . . . . . . . . . . . . . . .

65

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

65

DTC Logic . . . . . . . . . . . . . . . ...

65

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

66

B2661, B2662, B2663 UPPER VENTILATOR
DOOR MOTOR . . . . . . . . . . . . ..

67

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

67

DTC Logic . . . . . . . . . . . . . . . ...

67

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

68

BLOWER MOTOR . . . . . . . . . . . .

70

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

70

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

70

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

70

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

73

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

74

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

74

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

74

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

74

A/C CONTROL SIGNAL CIRCUIT . . . . .

76

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

76

POWER SUPPLY AND GROUND CIRCUIT . .

77

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

77

A/C AUTO AMP. : Description . . . . . . . ....

77

A/C AUTO AMP. : Component Function Check . .

77

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

77

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

78

A/C CONTROL : Diagnosis Procedure . . . . ...

78

A/C DISPLAY . . . . . . . . . . . . . . .

79

A/C DISPLAY : Diagnosis Procedure . . . . . .

79

ECU DIAGNOSIS INFORMATION . . . .

80

ECM . . . . . . . . . . . . . . . . ...

80

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

80

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

95

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

95

Wiring Diagram - AIR CONDITIONER CONTROL
SYSTEM - . . . . . . . . . . . . . . . ...

97

Fail-Safe . . . . . . . . . . . . . . . .

105

DTC Inspection Priority Chart . . . . . . . .

106

DTC Index . . . . . . . . . . . . . . . .

106

SYMPTOM DIAGNOSIS . . . . . . ...

108

AIR CONDITIONER CONTROL . . . . . ...

108

Diagnosis Chart By Symptom . . . . . . . ...

108

INSUFFICIENT COOLING . . . . . . . .

109

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

109

Inspection procedure . . . . . . . . . . .

109

INSUFFICIENT HEATING . . . . . . . .

112

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

112

Inspection procedure . . . . . . . . . . .

112

NOISE . . . . . . . . . . . . . . . ...

115

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

115

Inspection procedure . . . . . . . . . . .

115

MEMORY FUNCTION DOES NOT OPERATE ..

117

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

117

Inspection procedure . . . . . . . . . . .

117

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

118

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

118

FOR USA AND CANADA . . . . . . . . . ...

118

FOR USA AND CANADA : Precaution for Supple-
mental Restraint System (SRS) "AIR BAG" and
"SEAT BELT PRE-TENSIONER" . . . . . . .

118

FOR USA AND CANADA : Precautions for Re-
moving of Battery Terminal . . . . . . . . ...

118

FOR USA AND CANADA : Working with HFC-
134a (R-134a) . . . . . . . . . . . . . ...

118

FOR USA AND CANADA : General Refrigerant
Precaution . . . . . . . . . . . . . . . .

119

FOR USA AND CANADA : Refrigerant Connec-
tion . . . . . . . . . . . . . . . . . .

119

FOR USA AND CANADA : Service Equipment .

121

FOR MEXICO . . . . . . . . . . . . . . ..

123

FOR MEXICO : Precaution for Supplemental Re-
straint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" . . . . . . . . . . . ...

123

HAC-3

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

FOR MEXICO : Precautions for Removing of Bat-
tery Terminal . . . . . . . . . . . . . . .

124

FOR MEXICO : Working with HFC-134a (R-134a)

..

124

FOR MEXICO : General Refrigerant Precaution ...

124

FOR MEXICO : Refrigerant Connection . . . ...

125

FOR MEXICO : Service Equipment . . . . . ..

127

COMPRESSOR . . . . . . . . . . . .

129

General Precautions . . . . . . . . . . . .

129

FLUORESCENT LEAK DETECTOR . . . ...

130

General Precautions . . . . . . . . . . . .

130

WITH 7 INCH DISPLAY

BASIC INSPECTION . . . . . . . . .

131

DIAGNOSIS AND REPAIR WORKFLOW . ...

131

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

131

INSPECTION AND ADJUSTMENT . . . . ..

134

Description & Inspection . . . . . . . . . ...

134

Temperature Setting Trimmer . . . . . . . ...

136

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

136

Inlet Port Memory Function (FRE) . . . . . .

137

Inlet Port Memory Function (REC) . . . . . .

137

SYSTEM DESCRIPTION . . . . . . ...

138

COMPRESSOR CONTROL FUNCTION . . ..

138

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

138

Fail-Safe . . . . . . . . . . . . . . . .

139

Component Part Location . . . . . . . . . .

139

Component’s Role . . . . . . . . . . . . .

142

AUTOMATIC AIR CONDITIONER SYSTEM ...

143

System Diagram . . . . . . . . . . . . .

143

System Description . . . . . . . . . . . ...

143

Component Part Location . . . . . . . . . .

150

Component Description . . . . . . . . . . .

153

MODE DOOR CONTROL SYSTEM . . . . .

154

System Diagram . . . . . . . . . . . . .

154

System Description . . . . . . . . . . . ...

154

UPPER VENTILATOR DOOR CONTROL
SYSTEM . . . . . . . . . . . . . . ...

156

System Diagram . . . . . . . . . . . . .

156

System Description . . . . . . . . . . . ...

156

AIR MIX DOOR CONTROL SYSTEM . . . ..

158

System Diagram . . . . . . . . . . . . .

158

System Description . . . . . . . . . . . ...

158

INTAKE DOOR CONTROL SYSTEM . . . ..

160

System Diagram . . . . . . . . . . . . .

160

System Description . . . . . . . . . . . ...

160

BLOWER MOTOR CONTROL SYSTEM . . .

162

System Diagram . . . . . . . . . . . . .

162

System Description . . . . . . . . . . . ...

162

MAGNET CLUTCH CONTROL SYSTEM . .

164

System Diagram . . . . . . . . . . . . .

164

System Description . . . . . . . . . . . .

164

CAN COMMUNICATION SYSTEM . . . . .

165

System Description . . . . . . . . . . . .

165

DIAGNOSIS SYSTEM (HVAC) . . . . . ...

166

CONSULT Function . . . . . . . . . . . ...

166

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

170

U1000 CAN COMM CIRCUIT . . . . . . .

170

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

170

DTC Logic . . . . . . . . . . . . . . . ..

170

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

170

U1010 CONTROL UNIT (CAN) . . . . . ...

171

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

171

DTC Logic . . . . . . . . . . . . . . . ..

171

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

171

B257B, B257C AMBIENT SENSOR . . . ...

172

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

172

DTC Logic . . . . . . . . . . . . . . . ..

172

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

173

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

174

B2578, B2579 IN-VEHICLE SENSOR . . .

175

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

175

DTC Logic . . . . . . . . . . . . . . . ..

175

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

176

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

177

B2581, B2582 INTAKE SENSOR . . . . ...

178

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

178

DTC Logic . . . . . . . . . . . . . . . ..

178

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

178

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

179

B2630, B2631 SUNLOAD SENSOR . . . ...

181

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

181

DTC Logic . . . . . . . . . . . . . . . ..

181

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

182

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

183

B2632, B2633 AIR MIX DOOR MOTOR
(DRIVER SIDE) . . . . . . . . . . . ...

184

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

184

DTC Logic . . . . . . . . . . . . . . . ..

184

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

185

B2634, B2635 AIR MIX DOOR MOTOR (PAS-
SENGER SIDE) . . . . . . . . . . . ...

186

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

186

DTC Logic . . . . . . . . . . . . . . . ..

186

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

187

B2636, B2637, B2638, B2639, B2654, B2655
MODE DOOR MOTOR . . . . . . . . .

188

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

188

DTC Logic . . . . . . . . . . . . . . . ..

188

HAC-4

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

189

B263D, B263E, B263F INTAKE DOOR MO-
TOR . . . . . . . . . . . . . . . . ..

191

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

191

DTC Logic . . . . . . . . . . . . . . . ..

191

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

192

B2661, B2662, B2663 UPPER VENTILATOR
DOOR MOTOR . . . . . . . . . . . .

193

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

193

DTC Logic . . . . . . . . . . . . . . . ..

193

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

194

BLOWER MOTOR . . . . . . . . . . ...

196

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

196

Component Function Check . . . . . . . .

196

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

196

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

199

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

200

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

200

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

200

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

200

POWER SUPPLY AND GROUND CIRCUIT ...

202

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

202

A/C AUTO AMP. : Description . . . . . . . ...

202

A/C AUTO AMP. : Component Function Check .

202

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

202

ECU DIAGNOSIS INFORMATION . . . .

204

ECM . . . . . . . . . . . . . . . . .

204

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

204

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

219

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

219

Wiring Diagram - AIR CONDITIONER CONTROL
SYSTEM - . . . . . . . . . . . . . . . ..

221

Fail-Safe . . . . . . . . . . . . . . . .

229

DTC Inspection Priority Chart . . . . . . . .

230

DTC Index . . . . . . . . . . . . . . . .

230

SYMPTOM DIAGNOSIS . . . . . . .

232

AIR CONDITIONER CONTROL . . . . . ..

232

Diagnosis Chart By Symptom . . . . . . . .

232

INSUFFICIENT COOLING . . . . . . . .

233

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

233

Inspection procedure . . . . . . . . . . .

233

INSUFFICIENT HEATING . . . . . . . .

236

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

236

Inspection procedure . . . . . . . . . . .

236

NOISE . . . . . . . . . . . . . . . ...

239

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

239

Inspection procedure . . . . . . . . . . .

239

MEMORY FUNCTION DOES NOT OPERATE ..

241

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

241

Inspection procedure . . . . . . . . . . .

241

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

242

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

242

FOR USA AND CANADA . . . . . . . . . ...

242

FOR USA AND CANADA : Precaution for Supple-
mental Restraint System (SRS) "AIR BAG" and
"SEAT BELT PRE-TENSIONER" . . . . . . .

242

FOR USA AND CANADA : Precautions for Re-
moving of Battery Terminal . . . . . . . . ...

242

FOR USA AND CANADA : Working with HFC-
134a (R-134a) . . . . . . . . . . . . . ...

242

FOR USA AND CANADA : General Refrigerant
Precaution . . . . . . . . . . . . . . . .

243

FOR USA AND CANADA : Refrigerant Connec-
tion . . . . . . . . . . . . . . . . . .

243

FOR USA AND CANADA : Service Equipment .

245

FOR MEXICO . . . . . . . . . . . . . . ..

247

FOR MEXICO : Precaution for Supplemental Re-
straint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER" . . . . . . . . . . . ...

247

FOR MEXICO : Precautions for Removing of Bat-
tery Terminal . . . . . . . . . . . . . . .

248

FOR MEXICO : Working with HFC-134a (R-134a) .

248

FOR MEXICO : General Refrigerant Precaution ..

248

FOR MEXICO : Refrigerant Connection . . . ...

249

FOR MEXICO : Service Equipment . . . . . ..

251

COMPRESSOR . . . . . . . . . . . .

253

General Precautions . . . . . . . . . . . .

253

FLUORESCENT LEAK DETECTOR . . . .

254

General Precautions . . . . . . . . . . . .

254

DIAGNOSIS AND REPAIR WORKFLOW

HAC-5

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000009722024

OVERALL SEQUENCE

DETAILED FLOW

JMKIA8652GB