2010 Nissan 370Z Service & Repair Manual

HAC-1 VENTILATION, HEATER & AIR CONDITIONER C D E F G H J K L M SECTION HAC A B HAC N O P CONTENTS HEATER & AIR CONDITIONING CONTROL SYSTEM WITHOUT 7 INCH DISPLAY BASIC INSPECTION ................................... 5 DIAGNOSIS AND REPAIR WORK FLOW ........ 5 Work Flow ................................................................ 5 INSPECTION AND ADJUSTMENT .................... 7 Description & Inspection .......................................... 7 Temperature Setting Trimmer .................................. 8 Foot Position Setting Trimmer .................................. 8 Inlet Port Memory Function (FRE) ........................... 9 Inlet Port Memory Function (REC) ........................... 9 SYSTEM DESCRIPTION ............................ 11 COMPRESSOR CONTROL FUNCTION ...........11 Description ............................................................. 11 Fail-safe ................................................................. 12 Component Parts Location ..................................... 12 Component Description .......................................... 13 AUTOMATIC AIR CONDITIONER SYSTEM ....14 System Diagram ..................................................... 14 System Description ................................................ 14 Component Parts Location ..................................... 22 Component Description .......................................... 22 DIAGNOSIS SYSTEM (HVAC) .........................24 CONSULT-III Function ........................................... 24 DTC/CIRCUIT DIAGNOSIS ........................ 26 U1000 CAN COMM CIRCUIT ............................26 Description ............................................................. 26 DTC Logic .............................................................. 26 Diagnosis Procedure .............................................. 26 U1010 CONTROL UNIT (CAN) .........................27 Description ............................................................. 27 DTC Logic .............................................................. 27 Diagnosis Procedure .............................................. 27 B257B, B257C AMBIENT SENSOR ................. 28 Description ..............................................................28 DTC Logic ...............................................................28 Diagnosis Procedure ..............................................29 Component Inspection ............................................30 B2578, B2579 IN-VEHICLE SENSOR .............. 31 Description ..............................................................31 DTC Logic ...............................................................31 Diagnosis Procedure ..............................................32 Component Inspection ............................................33 B2581, B2582 INTAKE SENSOR ..................... 34 Description ..............................................................34 DTC Logic ...............................................................34 Diagnosis Procedure ..............................................34 Component Inspection ............................................35 B2630, B2631 SUNLOAD SENSOR ................. 37 Description ..............................................................37 DTC Logic ...............................................................37 Diagnosis Procedure ..............................................37 Component Inspection ............................................38 B2632, B2633 AIR MIX DOOR MOTOR PBR ... 40 Description ..............................................................40 DTC Logic ...............................................................40 Diagnosis Procedure ..............................................41 B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR ...................................... 42 Description ..............................................................42 DTC Logic ...............................................................42 Diagnosis Procedure ..............................................43 B263D, B263E, B263F INTAKE DOOR MO- TOR ................................................................... 44 Description ..............................................................44 DTC Logic ...............................................................44 Diagnosis Procedure ..............................................45 POWER SUPPLY AND GROUND CIRCUIT .... 46 Revision: 2009 July 2010 370Z

HAC-2 A/C AUTO AMP. ...................................................... 46 A/C AUTO AMP. : Diagnosis Procedure ............... 46 A/C CONTROL ......................................................... 46 A/C CONTROL : Diagnosis Procedure .................. 46 DOOR MOTOR COMMUNICATION CIRCUIT ... 48 Description ............................................................. 48 Diagnosis Procedure ............................................. 48 A/C CONTROL SIGNAL CIRCUIT ................... 50 Diagnosis Procedure ............................................. 50 A/C AUTO AMP. ............................................... 51 Description ............................................................. 51 Component Function Check .................................. 51 Diagnosis Procedure ............................................. 51 BLOWER MOTOR ............................................ 52 Description ............................................................. 52 Component Function Check .................................. 52 Diagnosis Procedure ............................................. 52 Component Inspection ........................................... 54 MAGNET CLUTCH ........................................... 56 Description ............................................................. 56 Component Function Check .................................. 56 Diagnosis Procedure ............................................. 56 ECV (ELECTRICAL CONTROL VALVE) ......... 58 Description ............................................................. 58 Diagnosis Procedure ............................................. 58 ECU DIAGNOSIS INFORMATION ............. 60 A/C AUTO AMP. ............................................... 60 Reference Value .................................................... 60 Wiring Diagram - AIR CONDITIONER CONTROL SYSTEM - .............................................................. 63 Fail-safe ................................................................. 70 DTC Inspection Priority Chart ............................. 71 DTC Index ............................................................. 71 SYMPTOM DIAGNOSIS ............................ 73 AUTOMATIC AIR CONDITIONER SYSTEM .... 73 Diagnosis Chart By Symptom ................................ 73 INSUFFICIENT COOLING ................................ 74 Description ............................................................. 74 Diagnosis Procedure ............................................. 74 INSUFFICIENT HEATING ................................ 76 Description ............................................................. 76 Diagnosis Procedure ............................................. 76 NOISE ............................................................... 79 Description ............................................................. 79 Diagnosis Procedure ............................................. 79 PRECAUTION ............................................ 81 PRECAUTIONS ................................................ 81 EXCEPT FOR MEXICO ............................................ 81 EXCEPT FOR MEXICO : Precaution for Supple- mental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" .......................... 81 EXCEPT FOR MEXICO : Precaution Necessary for Steering Wheel Rotation after Battery Discon- nect ........................................................................ 81 EXCEPT FOR MEXICO : Precaution for Battery Service ................................................................... 82 FOR MEXICO ........................................................... 82 FOR MEXICO : Precaution for Supplemental Re- straint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" ................................................ 82 FOR MEXICO : Precaution Necessary for Steer- ing Wheel Rotation after Battery Disconnect ......... 82 FOR MEXICO : Precaution for Battery Service ..... 83 REMOVAL AND INSTALLATION .............. 84 A/C CONTROL ................................................. 84 BASE AUDIO ........................................................... 84 BASE AUDIO : Exploded View .............................. 84 BASE AUDIO : Removal and Installation ............... 84 BOSE AUDIO WITHOUT NAVIGATION .................. 84 BOSE AUDIO WITHOUT NAVIGATION : Explod- ed View .................................................................. 85 BOSE AUDIO WITHOUT NAVIGATION : Remov- al and Installation ................................................... 85 A/C AUTO AMP. ............................................... 86 BASE AUDIO ........................................................... 86 BASE AUDIO : Exploded View .............................. 86 BASE AUDIO : Removal and Installation ............... 86 BOSE AUDIO WITHOUT NAVIGATION .................. 86 BOSE AUDIO WITHOUT NAVIGATION : Explod- ed View .................................................................. 87 BOSE AUDIO WITHOUT NAVIGATION : Remov- al and Installation ................................................... 87 AMBIENT SENSOR .......................................... 88 Exploded View ....................................................... 88 Removal and Installation ........................................ 88 IN-VEHICLE SENSOR ...................................... 89 Exploded View ....................................................... 89 Removal and Installation ........................................ 89 SUNLOAD SENSOR ........................................ 90 Exploded View ....................................................... 90 Removal and Installation ........................................ 90 INTAKE SENSOR ............................................. 91 Exploded View ....................................................... 91 Removal and Installation ........................................ 91 REFRIGERANT PRESSURE SENSOR ........... 93 Exploded View ....................................................... 93 Revision: 2009 July 2010 370Z

HAC-3 C D E F G H J K L M A B HAC N O P Removal and Installation ........................................ 93 DOOR MOTOR ..................................................94 Exploded View ....................................................... 94 INTAKE DOOR MOTOR ........................................... 94 INTAKE DOOR MOTOR : Removal and Installa- tion ......................................................................... 94 MODE DOOR MOTOR ............................................. 95 MODE DOOR MOTOR : Removal and Installation .... 95 AIR MIX DOOR MOTOR .......................................... 95 AIR MIX DOOR MOTOR : Removal and Installa- tion ......................................................................... 95 WITH 7 INCH DISPLAY BASIC INSPECTION .................................. 96 DIAGNOSIS AND REPAIR WORK FLOW .......96 Work Flow .............................................................. 96 INSPECTION AND ADJUSTMENT ...................98 Description & Inspection ........................................ 98 Temperature Setting Trimmer ................................ 99 Foot Position Setting Trimmer .............................. 100 Inlet Port Memory Function (FRE) ....................... 100 Inlet Port Memory Function (REC) ....................... 101 SYSTEM DESCRIPTION .......................... 102 COMPRESSOR CONTROL FUNCTION ......... 102 Description ........................................................... 102 Fail-safe ............................................................... 102 Component Parts Location ................................... 103 Component Description ........................................ 104 AUTOMATIC AIR CONDITIONER SYSTEM .. 105 System Diagram ................................................... 105 System Description .............................................. 105 Component Parts Location ................................... 114 Component Description ........................................ 114 DIAGNOSIS SYSTEM (HVAC) ....................... 116 CONSULT-III Function ......................................... 116 DTC/CIRCUIT DIAGNOSIS ...................... 118 U1000 CAN COMM CIRCUIT .......................... 118 Description ........................................................... 118 DTC Logic ............................................................ 118 Diagnosis Procedure ............................................ 118 U1010 CONTROL UNIT (CAN) ....................... 119 Description ........................................................... 119 DTC Logic ............................................................ 119 Diagnosis Procedure ............................................ 119 B257B, B257C AMBIENT SENSOR ............... 120 Description ........................................................... 120 DTC Logic ............................................................ 120 Diagnosis Procedure ............................................ 121 Component Inspection .......................................... 122 B2578, B2579 IN-VEHICLE SENSOR ............ 123 Description ............................................................ 123 DTC Logic ............................................................. 123 Diagnosis Procedure ............................................ 124 Component Inspection .......................................... 125 B2581, B2582 INTAKE SENSOR ................... 126 Description ............................................................ 126 DTC Logic ............................................................. 126 Diagnosis Procedure ............................................ 126 Component Inspection .......................................... 127 B2630, B2631 SUNLOAD SENSOR ............... 129 Description ............................................................ 129 DTC Logic ............................................................. 129 Diagnosis Procedure ............................................ 129 Component Inspection .......................................... 130 B2632, B2633 AIR MIX DOOR MOTOR PBR . 132 Description ............................................................ 132 DTC Logic ............................................................. 132 Diagnosis Procedure ............................................ 133 B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR .................................... 134 Description ............................................................ 134 DTC Logic ............................................................. 134 Diagnosis Procedure ............................................ 135 B263D, B263E, B263F INTAKE DOOR MO- TOR ................................................................. 136 Description ............................................................ 136 DTC Logic ............................................................. 136 Diagnosis Procedure ............................................ 137 POWER SUPPLY AND GROUND CIRCUIT .. 138 A/C AUTO AMP. ..................................................... 138 A/C AUTO AMP. : Diagnosis Procedure .............. 138 DOOR MOTOR COMMUNICATION CIRCUIT. 139 Description ............................................................ 139 Diagnosis Procedure ............................................ 139 A/C AUTO AMP. ............................................. 141 Description ............................................................ 141 Component Function Check ................................. 141 Diagnosis Procedure ............................................ 141 BLOWER MOTOR .......................................... 142 Description ............................................................ 142 Component Function Check ................................. 142 Diagnosis Procedure ............................................ 142 Component Inspection .......................................... 144 MAGNET CLUTCH ......................................... 146 Description ............................................................ 146 Component Function Check ................................. 146 Diagnosis Procedure ............................................ 146 Revision: 2009 July 2010 370Z

HAC-4 ECV (ELECTRICAL CONTROL VALVE) ....... 148 Description ............................................................ 148 Diagnosis Procedure ............................................ 148 ECU DIAGNOSIS INFORMATION ............ 150 A/C AUTO AMP. ............................................. 150 Reference Value ................................................... 150 Wiring Diagram - AIR CONDITIONER CONTROL SYSTEM - ............................................................. 153 Fail-safe ................................................................ 160 DTC Inspection Priority Chart ............................ 161 DTC Index ............................................................ 161 SYMPTOM DIAGNOSIS ........................... 163 AUTOMATIC AIR CONDITIONER SYSTEM .. 163 Diagnosis Chart By Symptom ............................... 163 INSUFFICIENT COOLING .............................. 164 Description ............................................................ 164 Diagnosis Procedure ............................................ 164 INSUFFICIENT HEATING .............................. 166 Description ............................................................ 166 Diagnosis Procedure ............................................ 166 NOISE ............................................................. 169 Description ............................................................ 169 Diagnosis Procedure ............................................ 169 MEMORY FUNCTION DOES NOT OPERATE . 171 Description ............................................................ 171 Diagnosis Procedure ............................................ 171 PRECAUTION ........................................... 172 PRECAUTIONS .............................................. 172 EXCEPT FOR MEXICO ........................................... 172 EXCEPT FOR MEXICO : Precaution for Supple- mental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" ......................... 172 EXCEPT FOR MEXICO : Precaution Necessary for Steering Wheel Rotation after Battery Discon- nect ....................................................................... 172 EXCEPT FOR MEXICO : Precaution for Battery Service .................................................................. 173 FOR MEXICO .......................................................... 173 FOR MEXICO : Precaution for Supplemental Re- straint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER" .............................................. 173 FOR MEXICO : Precaution Necessary for Steer- ing Wheel Rotation after Battery Disconnect ....... 173 FOR MEXICO : Precaution for Battery Service ... 174 REMOVAL AND INSTALLATION ............. 175 PRESET SWITCH ............................................ 175 Exploded View ..................................................... 175 Removal and Installation ...................................... 175 A/C AUTO AMP. .............................................. 176 Exploded View ..................................................... 176 Removal and Installation ...................................... 176 AMBIENT SENSOR ......................................... 177 Exploded View ..................................................... 177 Removal and Installation ...................................... 177 IN-VEHICLE SENSOR ..................................... 178 Exploded View ..................................................... 178 Removal and Installation ...................................... 178 SUNLOAD SENSOR ....................................... 179 Exploded View ..................................................... 179 Removal and Installation ...................................... 179 INTAKE SENSOR ............................................ 180 Exploded View ..................................................... 180 Removal and Installation ...................................... 180 REFRIGERANT PRESSURE SENSOR .......... 182 Exploded View ..................................................... 182 Removal and Installation ...................................... 182 DOOR MOTOR ................................................ 183 Exploded View ..................................................... 183 INTAKE DOOR MOTOR ........................................ 183 INTAKE DOOR MOTOR : Removal and Installa- tion ....................................................................... 183 MODE DOOR MOTOR ........................................... 184 MODE DOOR MOTOR : Removal and Installation . 184 AIR MIX DOOR MOTOR ........................................ 184 AIR MIX DOOR MOTOR : Removal and Installa- tion ....................................................................... 184 Revision: 2009 July 2010 370Z

DIAGNOSIS AND REPAIR WORK FLOW 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 WORK FLOW Work Flow INFOID:0000000005239120 OVERALL SEQUENCE DETAILED FLOW 1.INTERVIEW FOR MALFUNCTION Interview the symptom to the customer. JPLIA0313GB Revision: 2009 July 2010 370Z

2010 Nissan 370Z Service & Repair Manual

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