HVAC Climate Control (Manual A/C) – Servicing and Diagnosis Page 2C–1
Page 2C–1
Section 2C
HVAC Climate Control (Manual A/C) –
Servicing and Diagnosis
ATTENTION
Before performing any Service Operation or other procedure described in this Section, refer to Section 00
Warnings, Cautions and Notes for correct workshop practices with regard to safety and/or property damage.
1 General Information ...............................................................................................................................2
1.1 Vehicle Builds from Tag No. L171506 Onwards.................................................................................................. 2
1.2 Vehicle Builds Prior to Tag No. L171506 ............................................................................................................. 3
2 Wiring Diagrams.....................................................................................................................................4
Connectors A15 – M7 ............................................................................................................................................ 5
Connectors M7 – X119........................................................................................................................................... 6
Connectors X119 – X206 ....................................................................................................................................... 7
Wiring Diagram: HVAC Climate Control (Manual A/C) System – V6.................................................................. 8
Wiring Diagram: HVAC Climate Control (Manual A/C) System – GEN III V8..................................................... 9
Techline
HVAC Climate Control (Manual A/C) – Servicing and Diagnosis Page 2C–2
Page 2C–2
1 General Information
With the following exceptions, MY 2004 VY R egular and Crew Cab HVAC Climate Control (Manual A/C) – Servicing and
Diagnosis information carr ies over from MY 2003 VY and V2 Series vehicles.
• From Tag No. L171506 a revised HVAC unit has been fitted. The information in this Section i ncludes information
relevant to the revised HVAC unit.
• There are minor differences in wiring – refer to 2 Wiring Diagrams.
1.1 Vehicle Builds from Tag No. L171506
Onwards
From Tag No. L171506 a revised HVAC unit has been fitted. The information in this Section a pplies to the revised HVAC
unit.
For all other information regarding the servici ng and diagnosis of the heating and ventilation system, refer to
Section 2C HVAC Climate Control (Man ual A/C) – Servicing and Diagnosis in the MY 2003 VY and V2 Series Service
Information.
HVAC Climate Control (Manual A/C) – Servicing and Diagnosis Page 2C–3
Page 2C–3
1.2 Vehicle Builds Prior to Tag No. L171506
For all information regarding the servicing and diagnosis of the heating and ventilati on system fitted to
vehicles built prior to T ag No. L1715 06 (other than electrical connector and wiring diagram information), refer to
Section 2C HVAC Climate Control (Man ual A/C) – Servicing and Diagnosis in the MY 2003 VY and V2 Series Service
Information.
For electrical connector and wiring diagram information for all vehicles, irrespective of tag number,
refer to 2 Wiring Diagrams in this Section.
HVAC Climate Control (Manual A/C) – Servicing and Diagnosis Page 2C–4
Page 2C–4
2 Wiring Diagrams
The following figures provide electrical connector diagrams and wiring diagrams applicable to HVAC Climate Control
(Manual A/C) systems as fitted to MY 2004 VY Regular Cab and Crew Cab vehicles. These diagrams should be used as
an aid to diagnosing circuit faults. The content of these figures is as follows:
• Electrical connectors (A15 – M7) – refer to Figure 2C – 1
• Electrical connectors continued (M7 – X119) – refer to F igure 2C – 2
• Electrical connectors continued (X119 – X206) – refer to Figure 2C – 3
• Wiring diagram: HVAC Climate Control (Manual A/C) system, V6 – refer to Figure 2C – 4
• Wiring diagram: HVAC Climate Control (Manual A/C) system, GEN III V8 – refer to Figure 2C – 5
NOTE
Prior to Tag No. L171506, the blower motor was
fitted with a built-in circuit breaker for motor
protection. The revised HVAC unit fitted from
Tag No. L171506 onwards uses an external
blade type fuse in lieu of the built-in circuit
breaker. For blower wiring information only, for
the built-in circuit breaker type motor, refer to in
Section 2C, 9 Wiring Diagrams in the MY 2003
VY and V2 Series Service Information (RHD
vehicle information on ly).
For wiring diagrams related to the Occupant Climate Control (Auto A/C) system as fitted to MY 2004 VY Crew Cab
vehicles, refer to Section 2F, 3 Wiring Diagrams.
In the following wiring dia grams (Figure 2C – 4 and Figure 2C – 5) all com ponents are described and displa yed in
accordance with the Integrated Vehicle Electrical Design (IVED) standard. To assist in wiring diagram interpretation, refer
to the following table:
IVED Description IVED Component Identification Common Description
Module Asm Body Cont A15 Body Control Module
Module Asm Htr & A/C Evpr Blo A60_RHD Manual HVAC Controller
Module Asm Pwrt Cont A84_V6 V6 Powertrain Control Module
Module Asm Pwrt Cont A84_V8 GEN III V8 Powertrain Control Module
Sensor Asm A/C Refrig Press B18 A/C Pressure Transducer
Coil A/C Clu L7 Compressor Clutch
Motor Asm Blo M3_RHD Blower Motor
Motor Asm Eng Cool Fan M7_V6 V6 Cooling Fan System
Motor Asm Eng Cool Fan M7_V8 GEN III V8 Cooling Fan System
Resistor Asm Blo Mot R6_RHD Blower Motor Resistor
Window Rr R22 Heated Rear Window
Switch Asm Ign & Start S149 Ignition Switch
The following table lists the IVED standard wire colour abbreviations:
BK Black D-GN Dark green L-GN Light green RD Red
BU Blue GN Green OG Orange TN Tan
BN Brown GY Grey PK Pink WH White
D-BU Dark blue L-BU Light blue PU Purple YE Yellow
NOTE
For electrical connector locations and
additional wiring diagram information, refer to
Section 12P Wiring Diagrams.
HVAC Climate Control (Manual A/C) – Servicing and Diagnosis Page 2C–5
Page 2C–5
Connectors A15 – M7
Figure 2C – 1
HVAC Climate Control (Manual A/C) – Servicing and Diagnosis Page 2C–6
Page 2C–6
Connectors M7 – X119
Figure 2C – 2
HVAC Climate Control (Manual A/C) – Servicing and Diagnosis Page 2C–7
Page 2C–7
Connectors X119 – X206
Figure 2C – 3
HVAC Climate Control (Manual A/C) – Servicing and Diagnosis Page 2C–8
Page 2C–8
Wiring Diagram: HVAC Climate Control (Manual A/C) System – V6
Figure 2C – 4
HVAC Climate Control (Manual A/C) – Servicing and Diagnosis Page 2C–9
Page 2C–9
Wiring Diagram: HVAC Climate Control (Manual A/C) System – GEN III V8
Figure 2C – 5