Nissan Titan A60. Manual - part 580

 

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Nissan Titan A60. Manual - part 580

 

 

HAC-3

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HAC

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DEFROSTER DOOR MOTOR CIRCUIT  ..........

127

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

127

Defroster Door Motor Component Function Check 

..

127

Defroster Door Motor Diagnosis Procedure  ..........

127

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

131

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

131

Front Blower Motor Component Function Check ..

131

Front Blower Motor Diagnosis Procedure  .............

132

Front Blower Motor Component Inspection ...........

135

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

137

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

137

Magnet Clutch Component Function Check  .........

137

Magnet Clutch Diagnosis Procedure .....................

137

WATER VALVE CIRCUIT  ................................

142

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

142

Water Valve Diagnosis Procedure ........................

142

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

144

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

144

Ambient Sensor Diagnosis Procedure  ..................

144

Ambient Sensor Component Inspection ................

145

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

147

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

147

Intake Sensor Diagnosis Procedure ......................

147

Intake Sensor Component Inspection ...................

148

POWER SUPPLY AND GROUND CIRCUIT 
FOR CONTROLLER  ........................................

150

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

150

Front Air Control Component Function Check  ......

150

Front Air Control Power and Ground Diagnosis 
Procedure ..............................................................

150

ECU DIAGNOSIS INFORMATION  ............

152

MANUAL A/C IDENTIFICATION TABLE  ........

152

Application Table ...................................................

152

AIR CONDITIONER CONTROL .......................

153

Front Air Control Terminals Reference Values  .....

153

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

155

AIR CONDITIONER CONTROL .......................

155

Wiring Diagram - Manual With 2 Control Dial Sys-
tem ........................................................................

155

SYMPTOM DIAGNOSIS  ............................

165

MANUAL A/C IDENTIFICATION TABLE  ........

165

Application Table ...................................................

165

AIR CONDITIONER CONTROL .......................

166

Symptom Matrix Chart .........................................

166

INSUFFICIENT COOLING  ...............................

167

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

167

Diagnostic Work Flow ............................................

168

Performance Chart  ................................................

170

Trouble Diagnoses for Abnormal Pressure  ...........

171

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

175

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

175

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

177

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

177

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

178

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

178

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

178

Working with HFC-134a (R-134a)  .........................

178

Precaution for Service Equipment  .........................

179

MANUAL A/C (TYPE 2)

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

180

MANUAL A/C IDENTIFICATION TABLE  .......

180

Application Table  ...................................................

180

DIAGNOSIS AND REPAIR WORKFLOW  ......

181

How to Perform Trouble Diagnosis For Quick And 
Accurate Repair .....................................................

181

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

182

Operational Check .................................................

182

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

184

MANUAL A/C IDENTIFICATION TABLE  .......

184

Application Table  ...................................................

184

FUNCTION INFORMATION ............................

185

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

185

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

187

REFRIGERATION SYSTEM  ...........................

188

Refrigerant Cycle ...................................................

188

Refrigerant System Protection ...............................

188

MANUAL AIR CONDITIONER SYSTEM  ........

190

Control System Diagram  .......................................

190

Control System Description  ...................................

190

Discharge Air Flow  ................................................

191

Switches And Their Control Function  ....................

192

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

194

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

194

CONSULT-III Function (BCM - AIR CONDITION-
ER) ........................................................................

194

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

196

MANUAL A/C IDENTIFICATION TABLE  .......

196

Application Table  ...................................................

196

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

197

HAC-4

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

197

Mode Door Motor Component Function Check  .....

197

Mode Door Motor Diagnosis Procedure  ................

197

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

201

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

201

Air Mix Door Motor Component Function Check  ...

201

Air Mix Door Motor Diagnosis Procedure  ..............

202

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

205

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

205

Intake Door Motor Component Function Check  ....

205

Intake Door Motor Diagnosis Procedure  ...............

206

DEFROSTER DOOR MOTOR CIRCUIT  .........

207

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

207

Defroster Door Motor Component Function Check 

..

207

Defroster Door Motor Diagnosis Procedure ...........

207

BLOWER MOTOR CONTROL SYSTEM  ........

211

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

211

Front Blower Motor Component Function Check ...

211

Front Blower Motor Diagnosis Procedure ..............

212

Front Blower Motor Component Inspection  ...........

215

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

217

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

217

Magnet Clutch Component Function Check ..........

217

Magnet Clutch Diagnosis Procedure  .....................

217

WATER VALVE CIRCUIT ................................

222

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

222

Water Valve Diagnosis Procedure .........................

222

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

224

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

224

Intake Sensor Diagnosis Procedure  ......................

224

Intake Sensor Component Inspection  ...................

225

POWER SUPPLY AND GROUND CIRCUIT 
FOR CONTROLLER ........................................

227

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

227

Front Air Control Component Function Check .......

227

Front Air Control Power and Ground Diagnosis 
Procedure .............................................................

227

ECU DIAGNOSIS INFORMATION ............

229

MANUAL A/C IDENTIFICATION TABLE .........

229

Application Table  ..................................................

229

AIR CONDITIONER CONTROL  .......................

230

Front Air Control Terminals Reference Values  .....

230

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

232

AIR CONDITIONER CONTROL  .......................

232

Wiring Diagram - Manual With 3 Control Dial Sys-
tem ........................................................................

232

SYMPTOM DIAGNOSIS  ...........................

242

MANUAL A/C IDENTIFICATION TABLE .........

242

Application Table  ..................................................

242

AIR CONDITIONER CONTROL  .......................

243

Symptom Matrix Chart .........................................

243

INSUFFICIENT COOLING ................................

244

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

244

Diagnostic Work Flow  ...........................................

245

Performance Chart ................................................

247

Trouble Diagnoses for Abnormal Pressure ...........

248

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

252

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

252

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

254

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

254

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

255

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

255

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

255

Working with HFC-134a (R-134a) .........................

255

Precaution for Service Equipment ........................

256

DIAGNOSIS AND REPAIR WORKFLOW

HAC-5

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

How to Perform Trouble Diagnosis For Quick And Accurate Repair

INFOID:0000000006164670

WORK FLOW

1.

LISTEN TO CUSTOMER COMPLAINT

Listen to customer complaint. Get detailed information about the conditions and environment when the symp-

tom occurs.

>> GO TO 2

2.

CHECK FOR SERVICE BULLETINS

Check for any service bulletins.

>> GO TO 3.

3.

VERIFY THE SYMPTOM WITH OPERATIONAL CHECK

Verify the symptom with operational check. Refer to 

HAC-6, "Operational Check"

Can a symptom be duplicated?

YES

>> GO TO 4

NO

>> GO TO 5

4.

GO TO APPROPRIATE TROUBLE DIAGNOSIS

Go to appropriate trouble diagnosis. Refer to 

HAC-82, "Symptom Matrix Chart"

.

Can a symptom be duplicated?

>> GO TO 5.

5.

PERFORM THE FRONT AIR CONTROL SELF-DIAGNOSIS

Perform front air control self-diagnosis. Refer to 

HAC-21, "Front Air Control Self-Diagnosis"

.

>> If any diagnostic trouble codes set. Refer to 

HAC-21, "Front Air Control Self-Diagnosis Code

Chart"

.

>> Confirm the repair by performing operational check. Refer to 

HAC-6, "Operational Check"

.

HAC-6

< BASIC INSPECTION >

[AUTOMATIC AIR CONDITIONER]

INSPECTION AND ADJUSTMENT

INSPECTION AND ADJUSTMENT

Operational Check

INFOID:0000000006164671

The purpose of the operational check is to confirm that the system operates properly.

CHECKING MEMORY FUNCTION

1. Set the temperature to 32

° (90°F).

2. Press the OFF switch.
3. Turn ignition switch OFF.
4. Turn ignition switch ON.

5. Press the AUTO switch.
6. Confirm that the set temperature remains at previous temperature.

7. Press the OFF switch.
If NG, go to trouble diagnosis procedure for 

HAC-94, "Memory Function Check"

.

If OK, continue with next check.

CHECKING BLOWER

1. Rotate the blower control dial clockwise once, blower should operate on low speed.
2. Rotate the blower control dial again, and continue checking blower speed until all speeds are checked.
3. Leave blower on maximum speed. 
If NG, go to trouble diagnosis procedure for 

HAC-44, "Front Blower Motor Diagnosis Procedure"

.

If OK, continue with next check.

CHECKING DISCHARGE AIR

1. Press each MODE switch and the DEF

 switch.

2. Each MODE position indicator should illuminate.

3. Confirm that discharge air comes out according to the air distribution table. Refer to 

HAC-15, "Discharge

Air Flow"

.

Mode door position is checked in the next step.

If NG, go to trouble diagnosis procedure for 

HAC-23, "Mode Door Motor Diagnosis Procedure"

.

If OK, continue the check.

NOTE:

Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at

fresh when the DEF or D/F is selected.

CHECKING RECIRCULATION ( ,   ONLY)

1. Press recirculation (

) switch one time. Recirculation indicator should illuminate.

2. Press recirculation (

) switch one more time. Recirculation indicator should go off.

3. Listen for intake door position change (blower sound should change slightly).
If NG, go to trouble diagnosis procedure for 

HAC-36, "Intake Door Motor Diagnosis Procedure"

.

If OK, continue the check.

NOTE:

Confirm that the compressor clutch is engaged (sound or visual inspection) and intake door position is at fresh
when the DEF or D/F is selected. REC (

) is not allowed in DEF (

) D/F (

) or FOOT (

).

CHECKING TEMPERATURE DECREASE

1. Rotate temperature control dial (drive or passenger) counterclockwise until 18

°C (60°F) is displayed.

2. Check for cold air at appropriate discharge air outlets.
If NG, listen for sound of air mix door motor operation. If OK, go to trouble diagnosis procedure for 

HAC-83,

"Component Function Check"

. If air mix door motor appears to be malfunctioning, go to 

HAC-28, "Air Mix Door

Motor (Driver) Component Function Check"

Conditions

: Engine running and at normal operating temperature

 

 

 

 

 

 

 

Content   ..  578  579  580  581   ..