Page 101
Connectors and pin assignment BCM
white
X1
(IP1)
blue
X2
(IP2)
green
X3
(CL)
black
X4
(UH1)
brown
X5
(UH2)
pink
X6
(BD1)
grey
X7
(BD2)
100
Page 102
Cavity
X1-01
X1-02
X1-03
X1-04
X1-05
X1-06
X1-07
X1-08
X1-09
X1-10
X1-11
X1-12
X1-13
X1-14
X1-15
X1-16
X1-17
X1-18
X1-19
X1-20
X1-21
X1-22
X1-23
X1-24
X1-25
X1-26
X2-01
X2-02
X2-03
X2-04
X2-05
X2-06
X2-07
X2-08
X2-09
X2-10
X2-11
X2-12
X2-13
Circuit Description
Power/Ground Distribution Ground #1 - Module and Logic
Power/Ground Distribution Battery #4 - Low Beam/HID Ballast Right
Power/Ground Distribution Battery #3 - Low Beam/HID Ballast Left
Power/Ground Distribution Battery #2 - Logic, High-side Relay Drivers,
Dimming, Shared Logic-Related Loads (with VBATT01)
Lights Interior LED Indicator Lights Dimming
Transmission Parklock Shifter Lock Soft Pull/Release Control
Lights Interior Dim Up, Dim Down, Front Fog, Rear Fog
Brake Controls Park Brake Applied Switch
Lights Exterior Head/Park Main Lighting Switch "OFF" Position
Lights Interior Lights Interior Defeat (Courtesy Defeat)
Lights Exterior Head/Park Main Lighting Switch "HEADLAMP" Position
Lights Interior Hazard Switch Illumination
Brake Controls Brake Pedal BASS Sensor Return
VASS Theft Deterrent CTD Indicator Central Door Lock #1/Security LED
Lights Exterior Head/Park Main Lighting Switch "PARKLAMP" Position
Lights Interior Ambient Lighting Color 2
Serial Data GMLAN High Speed Hi IP
Serial Data GMLAN High Speed Lo IP
VASS Remote Function Receiver Interface Tx
Power/Ground Distribution Battery #1 - Logic/High-Side Relay Drives,
Indicators, Dimming, Puddle, Shared Logic-Related Loads (with VBATT02)
Power/Ground Distribution Ground #2 - Module and Logic
Power/Ground Distribution Battery #5 - Parklamp Right, Park/Stop Left, Front
Turn Left/Right, BTSI/Parklock
Power/Ground Distribution Battery #8 - Door Lock/Unlock Relays
Lights Interior Automatic Lights Interior Illumination (Courtesy Lamps)
RPO
650
MY10
IN
IN
IN
IN
IN
&MM1
IN
IN
NC
IN
IN
IN
IN
IN
IN
IN
&UTJ
IN
IN
&UE1
&UE1
IN
IN
IN
Brake Controls Brake Pedal BASS Sensor Signal
Lights Interior LED Display & Switch Backlighting I
IN
IN
IN
IN
IN
IN
Lights Exterior Head/Park Ambient Light Sensor
Transmission Tap-Up/Tap-Down/Range Select Control Switch Signal Primary
Wipe/Wash Rear Wiper Select Switch (not for sedan)
Brake Controls Brake Pedal BASS Sensor Reference
&T83
&MM1
NC
IN
101
Page 103
Cavity
X2-14
X2-15
X2-16
X2-17
X2-18
Circuit Description
Brake Controls w/ABS Vehicle Dynamics Switch (Traction On/Off Switch)
Wipe/Wash Front Wiper Automatic (Rain Sense) On/Off Switch
VASS Remote Function Receiver Interface Ground
X2-19
X2-20
X2-21
X2-22
X2-23
X2-24
X2-25
X2-26
X2-27
X3-01
X3-02
X3-03
X3-04
X3-05
X3-06
X3-07
X3-08
X3-09
X3-10
X3-11
X3-12
X3-13
X3-14
X3-15
X3-16
X3-17
X3-18
X3-19
X3-20
X3-21
X3-22
X3-23
X3-24
X3-25
Serial Data LIN #4: Door Switch Panel 3 (DSP3), Power Window Lifter 3
(PWL3), Door Switch Panel 4 (DSP4), Power Window Lifter 4 (PWL4), Rear
Wiper Module (RWM), Slouch Seat Module (SSM)
Serial Data GMLAN High Speed DLC Stub Lo
Serial Data GMLAN High Speed DLC Stub Hi
VASS Remote Function Receiver Interface Power
Lights Exterior Stop/Turn Hazard Switch Input
VASS Remote Function Receiver Interface Rx
VASS Theft Deterrent Immobilizer Receiver Return
VASS Theft Deterrent Immobilizer Receiver Data (LIN)
VASS Theft Deterrent Immobilizer Receiver Switched Power
Steering Wheel Controls Infotainment/Transmission/Lighting Switch Power
Power Mode DLIS Accessory Signal
Power Mode DLIS Run/Crank Signal
VASS Theft Deterrent Key Capture Solenoid
Steering Wheel Controls Infotainment Steering Wheel Control Signal
Steering Wheel Controls Conventional Cruise Control Switch Signal
Wipe/Wash Front Wiper Select Switch Return
Lights Exterior Head/Park High/Low Beam Select Switch
Lights Exterior Stop/Turn Turn Switch Left Input
Wipe/Wash Front Wiper Select Switch
Shift Select Switch Performance Signal (Transmission Shift Pattern 1
Tow/Haul Switch)
Power Mode DLIS Off/Run/Crank Signal
Lights Exterior Head/Park Flash-to-Pass Switch
Horns Main Horn Pad Switch
Wipe/Wash Front Wiper High Switch
Transmission Tap-Up/Tap-Down/Range Select Control Switch Signal
Secondary
Power Mode DLIS Switch Reference
Lights Exterior Stop/Turn Turn Switch Right Input
Wipe/Wash Front Washer On Switch
102
RPO
650
MY10
IN
NC
IN
IN
IN
&BTM&U
LS
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
NC
&W1Y
&K34
IN
IN
IN
IN
&URC
NC
NC
IN
IN
IN
&WZI
NC
NC
IN
IN
Page 104
Cavity
Circuit Description
X4-01
Lights Exterior Head/Park Low Beam Right Driver/Right Dedicated DRL
X4-02
X4-03
Lights Exterior Head/Park Low Beam Left Driver/Left Dedicated DRL
Lights Exterior Stop/Turn Turn Lamp Right Front/Side Repeater
X4-04
X4-05
X4-06
Lights Exterior Stop/Turn Turn Lamp/Stop Right Rear Lamp Driver
Lights Exterior Head/Park Park Lamp or Position Lamp Right Driver
Lights Exterior Head/Park Park Lamp or Position Lamp Left Driver
X4-07
X4-08
X4-09
X4-10
X4-11
X4-12
X4-13
X4-14
X4-15
X4-16
X4-17
X4-18
X4-19
Lights Exterior Head/Park Park/Stop Rear Left Lamp PWM Driver
VASS Rear Closure Liftgate Release Relay High (only for station wagon)
Power Mode Logistics Mode Relay Open/Reset
Wipe/Wash Rear Wiper Relay (not for sedan)
Lights Exterior Stop/Turn LED CHMSL & Brake Lamp Relay Driver
Power Mode Accessory/Rap State/Relay
Lights Exterior Head/Park Park Lamp Europe License and Side Marker Lamps
Wipe/Wash Front Washer Relay
Power Mode Run/Crank Relay
Wipe/Wash Front Wiper Enable On/Off Relay
Wipe/Wash Front Wiper Park Switch
Charging System Regulated Voltage Control Current Sensor Signal
X4-20
X4-21
X4-22
X4-23
X4-24
X4-25
X4-26
Charging System Regulated Voltage Control Battery Voltage Sense Battery
Positive
Charging System Regulated Voltage Control Current Sensor Reference
Power Mode PCM Communications Enable
Serial Data GMLAN High Speed Communications Enable
RPO
650
MY10
&TT2&CV
3/EF7/Z4
9 = 7539
&TT4 =
312
&TT2&CV
3/EF7/Z4
9 = 7538
&TT4 =
712
IN
CV3/EF7/
Z49 =
1335
&CV3/EF
7/Z49=
7541
IN
IN
CV3/EF7/
Z49
NC
&V9B
NC
IN
IN
IN
IN
IN
IN
IN
IN
VASS Closure Status Hood Open/Closed (only sedan)
IN
IN
IN
IN
&UTJ/BT
V
Charging System Regulated Voltage Control Battery Voltage Sense Battery
Negative
IN
103
Page 105
Cavity
X5-01
X5-02
X5-03
X5-04
X5-05
X5-06
X5-07
X5-08
X5-09
X5-10
X5-11
X5-12
X5-13
X5-14
X5-15
X5-16
X5-17
X5-18
X5-19
X5-20
X5-21
X5-22
X5-23
X5-24
X5-25
X5-26
X6-01
X6-02
X6-03
X6-04
X6-05
X6-06
X6-07
X6-08
Circuit Description
Lights Exterior Stop/Turn Turn Lamp/Stop Left Rear Lamp Driver
Lights Exterior Stop/Turn Turn Lamp Left Front/Side Repeater
Power/Ground Distribution Battery #7 - Park Lamp Left. Turn Lamp Right
Front, Turn/Stop Left Rear, Park/Stop Right Rear
Power/Ground Distribution Battery #6 - CHMSL/Stoplamp, Backup,
Inadvertent/Interior Lights
Lights Exterior Fog Lamp Rear Direct Drive
Charging System Regulated Voltage Control Current Sensor Return
Lights Exterior Head/Park Park/Stop Rear Right Lamp PWM Driver
Transmission Shift Pattern 2 Sport Indicator
Hot Shot
Lights Exterior Fog Lamp Front Relay Driver (used with Cornering)
VASS Rear Closure Release Relay (Trunk/Liftglass)
Brake Controls Brake Pedal Apply (to PCM)
Lights Exterior Head/Park Low Beam Relay (w/Xenon)
Power Mode Run Relay
Lights Exterior Head/Park Low Beam/DRL Right Select Relay
Heated Wash Enable
Transmission Shift Pattern 1 Tow/Haul Indicator
Lights Exterior Head/Park High Beam Relay Control Driver
Horns Main Horn Relay
Lights Exterior Head/Park Low Beam/DRL Left Select Relay
VASS Theft Deterrent CTD Auxillary Horn Relay
Wipe/Wash Front Wiper Low/High Speed Select Relay
RPO
650
MY10
CV3/EF7/
Z49
=1334
&CV3/EF
7/Z49 =
7542
IN
IN
IN
&T79
IN
CV3/EF7/
Z49
&URC
NC
&T96
IN
IN
&TT2/TT6
IN
NC
IN
&URC
IN
IN
&URC
NC
Wipe/Wash Headlamp Washer Relay
VASS Power Locks Internal Driver/Fuel Door Lock Relay
VASS Power Locks Internal Non-Driver Door Lock Relay
VASS Power Locks Relay/Motor Ground
VASS Power Locks Internal All Any Door Unlock Relay
VASS Closure Status Ajar Switch Rear Closure/Liftgate/Liftglass
NC
IN
NC
&CE4
IN
IN(3271)
IN
IN
IN
Lights Interior Incandescent Display & Switch Backlighting
NC
104
Page 106
Cavity
X6-09
X6-10
X6-11
X6-12
X6-13
X6-14
X6-15
X6-16
X6-17
X6-18
X6-19
X6-20
X6-21
X6-22
X6-23
X6-24
X6-25
X6-26
X6-27
X7-01
X7-02
X7-03
X7-04
X7-05
X7-06
X7-07
X7-08
X7-09
X7-10
X7-11
X7-12
X7-13
X7-14
X7-15
X7-16
X7-17
X7-18
X7-19
X7-20
Circuit Description
Serial Data LIN #2: Remote Compass Module (RCM), Alarm Power Siren
Module (APSM), Remote PRNDL Display (RPD), Auto Learn Module (ALM)
Serial Data LIN #3: Door Switch Panel 1 (DSP1), Power Window Lifter 1
(PWL1), Door Switch Panel 2 (DSP2), Power Window Lifter 2 (PWL2)
Driver Door Key Unlock
VASS Theft Deterrent CTD Glass Breakage Sensor
VASS Rear Closure Release Switch Interior
VASS Rear Closure Release Switch Exterior Trunk, Liftgate, Endgate, Hatch
Serial Data LIN #1: Sunroof Controller 1 (SRC1), Sunroof Controller 2 (SRC2),
Auxillary Alarm Sensor (AAS), Rain or Rain/Light Sensor Module (RSM)
RPO
650
MY10
&MM1/UJ
N/UTR
IN
NC
NC
NC
IN
&UTV/TT
W/CE1/C
3U
NC
NC
Transmission Sport Switch (Shift Pattern 2)
&URC
Serial Data GMLAN High Speed Hi BD
Serial Data GMLAN High Speed Lo BD
IN
IN
VASS Closure Status Ajar Switch Left Rear Door
Interior Lamps Relay
Lights Interior Inadvertent Load (with IDLWF Feedback)
Lights Exterior Reverse/Backup Lamps Direct Drive
VASS Power Locks External Theft Security Relay
NC
IN
IN
IN
&UTT
&ATH
&MM1
IN
&DWJ/D
WD
IN
&UTT
NC
IN
&MM1
IN
NC
&V9B
&ATH
IN
IN
Transmission Parklock Shifter Lock Solenoid (Assert for Release)
Lights Interior Rear Cargo or Trunk Lamp Driver
Lights Interior LED Display & Switch Backlighting B
VASS Power Locks External Fuel Door Relay
VASS Closure Status Ajar Switch Right Rear Door
VASS Power Locks Courtesy Lock Switch All/Driver Door
VASS Theft Deterrent Shifter Park Switch
VASS Power Locks Latch Lock Status Driver Door
Power Mode Logistics Mode Relay Close/Set
VASS Power Locks Courtesy Unlock Switch All/Driver Door
Lights Interior Lights Interior On (Courtesy On)
105
Page 107
Cavity
X7-21
X7-22
X7-23
X7-24
X7-25
X7-26
Circuit Description
Lights Interior Ambient Lighting Color 1
RPO
650
MY10
IN
IN
NC
IN
Driver Door Key Lock
Send/Receive functions BCM
The BCM is connected to the following busses:
• High-speed CAN
• Low-speed CAN
• LIN 1
• LIN 2
• LIN 3
• LIN 4
• RFA bus
• Immobilizer bus
106
Page 108
ECC (Electronic Climate Control)
The Electronic Climate Control is responsible for complete HVAC functionality. Further
information is given in the following subsections.
Block diagram ECC
Batt
1
GMLAN 1
2
GMLAN 2
3
LIN
4
Aux. Htr. Diag
Aux
Htr.
RHS
Aux. Htr. PWM
HVAC silverbox
X2
10
EVDC PWM
11
EVDC VBatt
13
Afterboil Pump
19
Rear Defog
5
EVDC
7
GND
8
IGN
9
Windscreen Temp
2
HVAC silverbox
3
Air Quality Sensor
RHS Temp
5
Humidity
12
4
5V Ref.
6
13
5V GND
7
20
Sunload
Multi/Single
Clocked Supply
7
5V GND
AQS
X1
PCAT Front
Legend
EVDC = Electronic Variable Displacement Compressor/Clutch
RHS
= Relative Humidity Sensor
PCAT = Passenger Compartment Air Temperature Sensor
107
Sunload
Sensor
Page 109
•
• •
• •
• •
• •
DAT1 – LH Upper
X3-1
ϑ
DAT2 – LH Lower
X4-11
ϑ
HVAC silverbox
Front Zone
DAT3 – RH Upper
X4-9
ϑ
X4-12
(Control 1..4)
Stepper
RAM
•
(Control 1..4)
Stepper
Temp 1
•
(Control 1..4)
Stepper
Temp 2
•
(Control 1..4)
Stepper
Recirc
•
X4-1..4
X4-5..8
Evaporator
X3-20
ϑ
Stepper
Mode 1
X3-11..14
DAT4 – RH Lower
ϑ
(Control 1..4)
X3-2..5
X3-16..19
Stepper Supply
5V GND
X3-9
X3-15
Front Blower Motor
X2-15
(Control 1..4)
5V Ref.
X2-17
Blower
X1-8
Rear
Switches
(option)
Mode
HVAC silverbox
Rear Zone
(only CJ4)
X4-13..16
Stepper Supply
X4-10
X1-9
(Control 1..4)
Temp.
X1-10
X4-17..20
5V GND
LPM
Front
Stepper
Rear
Mode
•
Stepper
Rear
Temp
X2-18
DAT5 - Rear Upper
X1-18
ϑ
Rear Blower Motor
DAT6 Rear Lower
X1-19
ϑ
•
•
•
X2-16
GND
X3-9
108
LPM
Rear
Page 110
Legend
DAT
= Discharge/Duct Air Temperature Sensor
LPM
= Linear Power Module ( = controller of blower motor)
Stepper = Stepper Motor:
Stepper Mode
= controls air distribution mode by moving a vent flap
Stepper Temp
= controls outlet air temperature by moving a vent flap which
mixes hot and cold air
Stepper RAM
= controls the amount of outside air by moving the flap
Stepper Resirc
= controls the amount of recirculation of compartment air by
moving the flap
Functional description ECC
The functionality of the ECC is parted into several sub functions. Every sub function is briefly
explained below.
A/C Compressor run-in
The A/C Compressor provides refrigerant mass flow to the Air conditioning refrigerant
system if enabled. When the A/C Compressor is newly installed and the system is charged
with refrigerant the compressor manufacturers require a low speed break-in period of
operations. Therefore in the assembly plant the A/C Compressor needs to run for a certain
period of time below a defined maximum operating speed. When the HVAC control is
triggered to perform the A/C compressor Run-In operation, the HVAC controller shall
monitor the engine speed and switch off the compressor operation if the engine speed
exceeds a defined threshold. The controller shall have a timer which accumulates the time
the compressor is running in this monitored speed mode. Once the timer reaches the
required duration time for run-in, this operation shall be suspended and a diagnostic flag
shall be set to indicate that the run-in was successful. During compressor run-in the A/C
switch shall not command compressor operation. The Run-In operation shall also have a
suspension mode to accommodate certain assembly operations. The refrigerant pressure
shall be monitored during the run-in and minimum and maximum pressures shall be
recorded.
After blow
The HVAC system is awakened from sleep mode after a period of time following ignition off
and pulses the blowers for a period of time (front & rear) in order to remove moisture from
the evaporator thus preventing mold growth. During the blower operation the vehicle
ultrasonic theft detection must be disabled. Function is not activated by default. Need to be
set by aftermarket.
Air conditioning
The A/C Compressor provides refrigerant mass flow to the Air conditioning refrigerant
system when enabled. The requirement for the Air conditioning function can be initiated
directly from the user (by button press), from operation interlocks with other customer
control actions (e.g. customer request for defrosting), and from remote start events. The A/C
compressor has the potential to utilize a fair amount of vehicle power and is typical driven
109