Nissan Murano Z51. Manual

HAC-3

HAC

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

125

FLUORESCENT LEAK DETECTOR ...............

126

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

126

WITH 7 INCH DISPLAY

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

127

DIAGNOSIS AND REPAIR WORKFLOW .......

127

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

127

INSPECTION AND ADJUSTMENT ..................

129

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

129

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

131

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

131

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

132

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

132

SYSTEM DESCRIPTION ...........................

133

COMPRESSOR CONTROL FUNCTION ..........

133

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

133

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

134

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

134

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

137

AUTOMATIC AIR CONDITIONER SYSTEM ...

138

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

138

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

138

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

145

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

148

MODE DOOR CONTROL SYSTEM .................

149

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

149

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

149

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

151

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

151

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

151

AIR MIX DOOR CONTROL SYSTEM ..............

153

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

153

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

153

INTAKE DOOR CONTROL SYSTEM ..............

155

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

155

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

155

BLOWER MOTOR CONTROL SYSTEM .........

157

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

157

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

157

MAGNET CLUTCH CONTROL SYSTEM ........

159

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

159

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

159

CAN COMMUNICATION SYSTEM ..................

160

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

160

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

161

CONSULT-III Function ..........................................

161

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

165

U1000 CAN COMM CIRCUIT .........................

165

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

165

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

165

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

165

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

166

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

166

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

166

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

166

B257B, B257C AMBIENT SENSOR ...............

167

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

167

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

167

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

168

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

169

B2578, B2579 IN-VEHICLE SENSOR ............

170

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

170

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

170

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

171

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

172

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

173

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

173

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

173

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

173

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

174

B2630, B2631 SUNLOAD SENSOR ...............

176

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

176

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

176

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

177

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

178

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

179

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

179

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

179

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

180

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

181

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

181

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

181

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

182

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

183

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

183

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

183

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

184

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

186

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

186

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

186

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

187

DIAGNOSIS AND REPAIR WORKFLOW

HAC-5

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

HAC

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000005514569

OVERALL SEQUENCE

*1: Refer to

HAC-106, "DTC Index"

*2: Refer to

HAC-108, "Diagnosis Chart By Symptom"

DETAILED FLOW

OBTAIN INFORMATION ABOUT SYMPTOM

Interview the customer to obtain as much information as possible about the conditions and environment under
which the malfunction occurred.

>> GO TO 2.

VERIFY SYMPTOM

Verify the symptom with operational check based on the information obtained from the customer. Refer to

HAC-7, "Description & Inspection"

>> GO TO 3.

JSIIA0943GB

HAC-6

< BASIC INSPECTION >

[WITHOUT 7 INCH DISPLAY]

DIAGNOSIS AND REPAIR WORKFLOW

CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III

Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC. Refer to

HAC-106, "DTC Index"

Are self-diagnosis results normal?

YES

>> GO TO 4.

>> GO TO 5.

NARROW DOWN THE MALFUNCTIONING PARTS BY SYMPTOM DIAGNOSIS

Perform symptom diagnosis and narrow down the malfunctioning parts. Refer to

HAC-108, "Diagnosis Chart

By Symptom"

>> GO TO 5.

REPAIR OR REPLACE

Repair or replace malfunctioning parts.
NOTE:
If DTC is displayed, erase DTC after repairing or replacing malfunctioning parts.

>> GO TO 6.

FINAL CHECK

Check that the A/C system operates normally.

Is the inspection result normal?

YES

>> INSPECTION END

>> GO TO 3.

Nissan Murano Z51. Manual - part 837