Suzuki Grand Vitara 2011 Manual page 1504

7-ii Table of Contents
Precautions on Servicing Compressor
Assembly .......................................................... 7B-4
General Description .............................................7B-5
AUTO A/C System Description ........................... 7B-5
HVAC Control System Description...................... 7B-5
HVAC Control Module Operation Description ..... 7B-6
A/C Refrigerant Type Description ....................... 7B-6
Sub-Cool A/C System Description ...................... 7B-7
A/C Evaporator Temperature Sensor
Description ........................................................ 7B-8
On-Board Diagnostic System Description........... 7B-8
Schematic and Routing Diagram........................7B-9
Air Flow Diagram of A/C System......................... 7B-9
Auto A/C Electronic Control Input / Output
Diagram ............................................................ 7B-9
A/C System Wiring Circuit Diagram ..................7B-10
Component Location .........................................7B-12
A/C Control System Components Location....... 7B-12
Diagnostic Information and Procedures..........7B-15
Air Conditioning System Check.........................7B-15
DTC Check........................................................ 7B-17
DTC Clearance ................................................. 7B-18
DTC Table.........................................................7B-19
Fail-Safe Table..................................................7B-21
Scan Tool Data ................................................. 7B-23
Visual Inspection ...............................................7B-24
A/C System Performance Inspection ................ 7B-25
A/C System Symptom Diagnosis ......................7B-32
Abnormal Noise Diagnosis................................ 7B-34
Abnormal Noise Symptom Diagnosis of A/C
System ............................................................7B-34
DTC B1502: Inside Air Temperature Sensor
and/or Its Circuit Malfunction .......................... 7B-36
DTC B1503: A/C Evaporator Air Temperature
Sensor and/or Its Circuit Malfunction .............. 7B-37
DTC B1504: Sunload Sensor and/or Its
Circuit Malfunction .......................................... 7B-39
DTC B1511: Temperature Control Actuator
(Position Sensor) and/or Its Circuit
Malfunction......................................................7B-40
DTC B1512: Air Flow Control Actuator
(Position Sensor) and/or Its Circuit
Malfunction......................................................7B-43
DTC B1513: Temperature Control Actuator
and/or Its Circuit Malfunction .......................... 7B-45
DTC B1514: Air Flow Control Actuator and/or
Its Circuit Malfunction......................................7B-48
DTC B1520: Temperature Selector and/or Its
Circuit Malfunction .......................................... 7B-50
DTC B1521: Blower Speed Selector and/or Its
Circuit Malfunction .......................................... 7B-51
DTC B1530: Air Intake Control Actuator
(Position Sensor) and/or Its Circuit
Malfunction......................................................7B-51
DTC B1531: Air Intake Control Actuator and/
or Its Circuit Malfunction ................................. 7B-54
DTC B1546: A/C Refrigerant Pressure
Malfunction......................................................7B-56
DTC B1551: Serial Communication Circuit
Malfunction......................................................7B-57
DTC B1552: Serial Communication Circuit
Malfunction......................................................7B-59
DTC B1553: CAN Communication Circuit
Malfunction......................................................7B-60
DTC B1556: Camshaft Position (CMP)
Sensor and/or Its Circuit Malfunction ..............7B-60
DTC B1557: Wheel Speed Sensor and/or Its
Circuit Malfunction...........................................7B-61
DTC B1561: Engine Coolant Temperature
Sensor and/or Its Circuit Malfunction ..............7B-61
DTC B1562: Outside Air Temperature Sensor
and/or Its Circuit Malfunction...........................7B-62
DTC B1563: A/C Refrigerant Pressure
Sensor and/or Its Circuit Malfunction ..............7B-62
HVAC Control Module and Its Circuits
Inspection........................................................7B-63
A/C System Inspection at ECM .........................7B-65
Repair Instructions ............................................7B-66
Operation Procedure for Charging A/C with
Refrigerant ......................................................7B-66
A/C Condenser Assembly On-Vehicle
Inspection........................................................7B-71
A/C Condenser Assembly Removal and
Installation .......................................................7B-71
Desiccant Removal and Installation ..................7B-71
HVAC Air Filter Removal and Installation .........7B-72
HVAC Air Filter Inspection ................................7B-72
HVAC Unit Components ...................................7B-73
HVAC Unit Removal and Installation ................7B-74
A/C Evaporator Removal and Installation .........7B-75
A/C Evaporator Inspection ................................7B-75
A/C Evaporator Temperature Sensor
Removal and Installation.................................7B-76
A/C Evaporator Temperature Sensor
Inspection........................................................7B-77
Expansion Valve On-Vehicle Inspection ...........7B-77
Expansion Valve Removal and Installation .......7B-77
A/C Refrigerant Pressure Sensor and Its
Circuit Inspection (Petrol Engine Model).........7B-78
A/C Refrigerant Pressure Sensor and Its
Circuit Inspection (Diesel Engine Model) ........7B-78
A/C Refrigerant Pressure Sensor Removal
and Installation ................................................7B-78
Sunload Sensor Removal and Installation ........7B-79
Sunload Sensor Inspection ...............................7B-79
Inside Air Temperature Sensor Removal and
Installation .......................................................7B-80
Inside Air Temperature Sensor Inspection ........7B-80
Outside Air Temperature Sensor Removal
and Installation ................................................7B-80
Outside Air Temperature Sensor Inspection .....7B-80
Air Flow Control Actuator Removal and
Installation .......................................................7B-80
Air Flow Control Actuator Inspection .................7B-80
Air Intake Control Actuator Removal and
Installation .......................................................7B-80
Air Intake Control Actuator Inspection...............7B-81