Engine Control Module
Description and Operation
Testing and Inspection
Locations
Service and Repair
Diagrams- Diagram Information and Instructions
- Diagram Legend
- 1/1 Battery
- 2/16 Relay, Intermittent Rear Window Wiping On/Off
- 2/17 Horn Relay
- 2/22 Relay, Climate Control System
- 2/23 Fuel Pump Relay
- 2/29 Relay, Extended D1 Feed
- 2/30 X Feed Overload Relay
- 2/31 15-Feed Overload Relay
- 2/32 Engine Management System Main Relay
- 2/33 Fuel System Relay
- 2/34 Fog Light Relay, Front
- 2/35 Starter Motor Relay
- 2/49 Relay, Rear Fog Light
- 2/52 Relay, 15I Feed, Rear
- 2/59 Unlocking Relay, Fuel Filler Flap
- 2/61 Relay, Position/parking Lights
- 2/62 Relay, Low Beam/Bi-Xenon
- 2/63 High Beam Relay
- 2/64 Auxiliary Light (accessory) Relay
- 2/72 Relay, Rear Window Wiper
- 2/79 Brake Light Relay
- 2/80 Reversing Light Relay
- 2/82 Relay, Heated Rear Window
- 2/83 Trailer Fog Light Relay
- 2/87 Unlocking Relay, Tailgate
- 2/90 Relay, Windshield Wiper, Low/High Speed
- 2/91 Relay, Intermittent Windshield Wiper
- 2/92 Relay, Windshield Washer Motor
- 2/93 Relay, Rear Window Washer Motor
- 2/101 Relay For Extended D2 Feed, Automatic Transmission
- 2/112 Unlocking Relay, Left-hand Rear
- 2/114 Unlocking Relay, Right-Hand Rear
- 2/115 Relay, Deadlock, Rear Doors
- 2/116 Rear Power Window Up Relay
- 2/117 Right Rear Power Window Up Relay
- 2/118 Rear Power Window Down Relay
- 2/119 Right Rear Power Window Down Relay
- 2/120 Relay - Power Windows, Power Child Lock Rear Door
- 2/138-139 Deadlock Relay, LH & RH Rear Door
- 2/152 Relay, Daytime Running Lights
- 2/158 Locking Relay, Rear Doors, Filler Flap
- 2/174 Relay, Suspension Module (SUM)
- 3/1 Ignition Switch
- 3/4 Cruise Control Switch SWS
- 3/6 Hazard Warning Flasher Switch
- 3/8 Heated Rear Window/door Mirror Switch
- 3/9 Brake Light Contact
- 3/10 Reversing Light Contact
- 3/25 Power Sunroof Switch
- 3/26 Power Driver's Seat Module
- 3/27 Power Passenger Seat Module
- 3/37 Horn Contact
- 3/47 Parking Brake Contact
- 3/59 Control, Beam Adjustment
- 3/60 Auxiliary Light Switch
- 3/62 Hood Alarm Contact
- 3/71 Gear Position Contacts - AW 50
- 3/71 Gear Position Contacts - 4T65AWD
- 3/73 Power Child Lock (PCL) Switch
- 3/74-77 LH & RH Front & Rear Door Lock Unit
- 3/78 Trunk Lid Lock Unit
- 3/80 Switch, Left-Hand Central Lock
- 3/82 Switch, Right-hand Central Lock
- 3/85-86 Rear Left & Right Door Power Window Switch
- 3/91 Switch, Left-Hand Heated Seat
- 3/92 Switch, Right-Hand Heated Seat
- 3/93-94 Left & Right Seatbelt Latch Switch
- 3/95 Spin Control Switch
- 3/111 Light Switch Module LSM
- 3/112 Climate Control Module CCM
- 3/117 Dome Light Control Module
- 3/126 Control Module Front Left Door DDM/PDM
- 3/127 Control Module Front Right Door PDM/DDM
- 3/130 Steering Wheel Module SWM
- 3/131 Switch, Audio/cellular Phone
- 3/135 RTI switch
- 3/156 Gear Selector Module (GSM)
- 3/171 Switch, Retractable Door Mirrors
- 3/173 Switch, Trunk Lid Private Lock
- 3/174 Switch, Reduced Alarm
- 3/225 Control Unit, Continuous Damping Control (CDC)
- 4/9 Control Module, Supplemental Restraint System
- 4/16 Brake Control Module BCM
- 4/28 Transmission Control Module (TCM)
- 4/31 Fan Control Module
- 4/33 Sunroof Control Module SRM
- 4/46 Engine Control Module ECM
- 4/50 Electronic Throttle Module ETM
- 4/52 Power Driver Seat Module PSM
- 4/56 Central Electronic Module CEM
- 4/58 Rear Electronic Module REM
- 4/68 Steering Angle Sensor module SAS
- 4/70 Upper Electronic Module UEM
- 4/71 Cooling Fan Control Module
- 4/76 Remote Control Unit For Garage Door Opener
- 4/78 Accessory Electronic Module AEM
- 4/82 Differential Electronic Module DEM
- 4/83 Fuel Pump Control Module
- 4/84 Suspension Module (SUM)
- 4/86, 108 Parking Assistance Module (PAM)
- 5/1 Combined Instrument Panel DIM
- 6/1 Windshield Wiper Motor
- 6/2 Windshield Washer Pump
- 6/3-4 RH & LH Headlight Wiper Motor
- 6/15 Sunroof Motor
- 6/16 Driver Seat Motor, Backrest Angle
- 6/17 Driver Seat Motor, Up/Down Front Edge
- 6/18 Driver Seat Motor, Up/Down Rear Edge
- 6/19 Driver Seat Motor, Forward/Backward
- 6/20 Passenger Seat Motor, Forward/Backward
- 6/25 Starter Motor
- 6/26 Generator
- 6/28 Motor, Passenger Compartment Fan
- 6/29 Motor, Electric Cooling Fan
- 6/30 Washer Pump, Rear Window
- 6/32 Rear Window Wiper Motor
- 6/33 Fuel Pump
- 6/33 Fuel Pump - B5254T4, B5244S, B5244S6
- 6/37 Lock Motor, Fuel Filler Flap
- 6/38-39 LH & RH Headlight Level Adjustment Motor
- 6/44 Cooling Fan, Electrics Box, Engine Compartment
- 6/48 Damper Motor, Recirculation
- 6/58, 60 Motor, FL & FR Power Window
- 6/62 LH Power Door Mirror
- 6/63 RH Power Door Mirror
- 6/64 Passenger Seat Motor, Backrest Angle
- 6/65 Passenger Seat Motor, Up/down Front Edge
- 6/66 Passenger Seat Motor, Up/down Rear Edge
- 6/69 Damper Motor, Ventilation/Floor/Defroster
- 6/92-93 Motor, RL & RR Power Window
- 6/95 Damper Motor, Temperature, LH Side
- 6/96 Damper Motor, Temperature, RH Side
- 6/102 Damper Motor, Defroster
- 6/103 Damper Motor, Floor/ventilation
- 6/114 Vacuum Pump
- 6/120 Engine Throttle Body
- 7/4 Brake Fluid Level Sensor
- 7/5 Washer Fluid Level Sensor
- 7/6 Oil Pressure Sensor
- 7/8 Pressure Sensor, Climate Control System
- 7/10 Interior Temperature Sensor
- 7/11 Outside Temperature Sensor
- 7/12 Solar Sensor, Indication Alarm and Electronic Immobilizer
- 7/15 Heated Oxygen Sensor
- 7/16 Coolant Temperature Sensor
- 7/17 Mass Airflow Sensor MAF
- 7/23-24 Rear & Front knock Sensor
- 7/25 Impulse Sensor
- 7/31-32 LH & RH Front ABS Sensor
- 7/35 Oil Level Sensor
- 7/41 Temperature Sensor, Evaporator
- 7/51 Accelerator Pedal Sensor
- 7/56-57 LH & RH Rear ABS Sensor
- 7/61 Input Speed Sensor
- 7/62 Output Speed Sensor
- 7/73 Coolant Level Sensor
- 7/74 Oil Temperature Sensor, Automatic Transmission - AW 50
- 7/74 Oil Temperature Sensor, Automatic Transmission - 4T65AWD
- 7/81 Pressure Sensor, Intake Manifold
- 7/82 Heated Oxygen Sensor, Diagnosis 1
- 7/87-88 Acceleration Sensor, Four-C, Front Left & Right
- 7/89 Acceleration Sensor, Four-C, Rear Left
- 7/91 Steering Angle Sensor
- 7/100 Inclination Sensor Module ISM
- 7/103 Heated Oxygen Sensor 3
- 7/104 Heated Oxygen Sensor 4 (diagnostic probe)
- 7/105 Outside Temperature Sensor, Engine Control Module
- 7/108-109 LH & RH Rear Side Impact Sensor
- 7/110-111 LH & RH Seat Temperature Sensor
- 7/115-116 LH & RH Front Side Impact Sensor
- 7/118-119 Acceleration Sensor, Shock Absorber, Four-C, FL & FR
- 7/120 Rear Left Angle Sensor
- 7/121 Shock Absorber, Four-C, Rear Left
- 7/122 Mass Movement Sensor (MMS), Front
- 7/123 Clutch Pedal Sensor
- 7/124 Brake Pedal Sensor
- 7/129 Brake Pressure Sensor 2
- 7/131-134 Parking Assistance Sensor 1, 2, 3, 4
- 7/135 Glass Breakage Sensor, Left-Hand
- 7/136 Glass Breakage Sensor, Right-hand
- 7/137 Glass Breakage Sensor, Tailgate
- 7/139 Brake Pressure Sensor 1
- 7/149 Rain Sensor Module (RSM)
- 7/156 Pressure & Temperature Sensor - B5254T4, B5244S, B5244S6
- 7/159 Air Quality Sensor
- 7/164 Sensor Module DSTC
- 7/165 Pressure and Temperature Sensor, Intake Manifold
- 7/172 Position Sensor, Camshaft, Intake Side
- 7/173 Position Sensor, Camshaft, Exhaust Side
- 8/3 Electromagnetic Clutch, Climate Control System
- 8/17 EGR Valve
- 8/18 EVAP Valve
- 8/19 Solenoid, Variable Valve Time, Inlet
- 8/22-23 Shock Absorber, Four-C, Rear Left and Right
- 8/28 Turbocharger Control Valve
- 8/30 Driver Side Airbag Igniter
- 8/31-32 Passenger Side Airbag, Side Airbag stage 2, Igniter
- 8/33-34 FL & FR Seat Belt Tensioner Igniter
- 8/36 Shift Lock Solenoid
- 8/37 Automatic Transmission - AW 50
- 8/37 Automatic Transmission - 4T65AWD
- 8/38-41 Shift Solenoid 1, 2, Lock-up & Press. Solenoid - AW 50
- 8/38-41 Shift Solenoid 1, 2 Lockup & Press. Solenoid - 4T65AWD
- 8/46 DSTC Activation Module
- 8/51-52 FL & FR Side Airbag Igniter
- 8/61 Driver Side Airbag Igniter Step 2
- 8/62 Belt Tensioner Igniter, Center Rear Seat
- 8/64 Solenoid Valve, Engine Mounting
- 8/66-67 LH & RH Inflatable Curtain Igniter
- 8/71-74 Throttle Solenoid, Shift Solenoid 3, 4, 5
- 8/76 Gas Tank Valve
- 8/84 Switch, Vacuum Pump
- 9/1 Front 12V Outlet
- 9/2 Heated Rear Window
- 9/12-13 Left seat heater, Right seat Warmer
- 9/16-17 LH & RH Backrest Heating Element
- 9/18-19 LH & RH Seat Heating Element
- 9/25 Rear 12V Outlet
- 9/32 PTC Resistor - Air Preheating
- 9/33-34 LH & RH Heated Door Mirror
- 10/1-2 LH & RH Front Lamp Housing
- 10/3 License Plate Lighting
- 10/5-6 FL & FR Fog Light
- 10/11-12 FL & FR Position/parking Lights
- 10/13-14 FL & FR Direction Indicator
- 10/15-16 Direction Indicator, Left & Right Front Fender
- 10/17-18 Lamp Housing, RH & LH Tail Light
- 10/19 Auxiliary Brake Light
- 10/25 Ceiling Light, Cargo Compartment
- 10/29 Glove Compartment Lighting
- 10/43, 50 RH & LH Brake Light
- 10/44-45, 51-52 RH & LH Tail Light Lamp
- 10/46, 53 Fog Light, Right & Left Rear
- 10/47, 54 RR & RL Direction Indicator
- 10/48, 55 RH & LH Reversing Light
- 10/64 RH High Beam
- 10/65, 69 Front Right & Left Auxiliary Light
- 10/66 Right Low Beam/Bi-Xenon
- 10/68 Left-Hand High Beam
- 10/70 Left low beam/Bi-Xenon
- 10/72 Front Ashtray Lighting
- 10/114-115 LH & RH Vanity Mirror Lighting
- 10/125 LH Front Courtesy Lighting
- 10/126 RH Front Courtesy Lighting
- 10/129-130 FL & FR Position/parking Lights
- 10/148 LH Rearview Mirror Lighting
- 10/150 Rear Reading Light
- 10/218 Remote Start Indicator Light
- 11A Main Fuses In Engine Compartment Fuse Box
- 11A-B/no. Fuses In the Engine Compartment
- 11B Fuses In Engine Compartment Fuse Box
- 11C Fuses In Passenger Compartment Fuse Box
- 11C Fuses In The Passenger Compartment
- 11D Fuses In Cargo Compartment Fuse Box
- 11D-E/no. Fuses In The Cargo Compartment
- 11E Main Fuses At Battery
- 15/30 Connecting Rail To 15/31
- 15/31_A1-C6 Engine Compartment Distribution Box
- 16/1 Audio Module (AUM)
- 16/2 Amplifier
- 16/3-4 RH & LH Front Door Speaker
- 16/5-6 RH & LH Rear Door Speaker
- 16/10-11 Horn 1 & 2
- 16/15 CD changer
- 16/16 LH Window Antenna Amplifier 1
- 16/26 Central Dashboard Speaker
- 16/35 Alarm Siren SCM
- 16/36 TV Receiver
- 16/45 Road Traffic Information (RTI)
- 16/46 RTI & Multimedia Display
- 16/47 GPS Antenna RTI
- 16/50, 54 LH & RH Rear Window Antenna
- 16/55-56 LH & RH Front Tweeter
- 16/57-58 Speaker, LH & RH D-pillar
- 16/60 Phone Module (PHM)
- 16/62 Hand Unit, Cellular Phone
- 16/64 Antenna, Cellular Telephone
- 16/65 Antenna Ring/Ignition Switch Lighting
- 16/67 Amplifier Antenna, Bumper
- 16/68 Antenna, Bumper
- 16/71 Window Antenna Amplifier 1 Right
- 16/73-74 Window Antenna Amplifier 2 Left & Right
- 16/77 Microphone, Cellular Telephone
- 16/78 Speaker, Cellular Telephone
- 16/79 Bass Speaker
- 16/93 Control Module, Cellular Telephone Handsfree
- 16/126 Holder, Cellular Telephone Handsfree
- 16/127 Microphone, Cellular Telephone Handsfree
- 17/13 Data Link Connector
- 17/17 Jump Start Connection
- 17/37 4-pin Socket, Towing Bracket Wiring
- 17/38 7-pin Socket, Towing Bracket Wiring
- 17/39 13-pin Socket, Towing Bracket Wiring
- 18/4 Contact Reel
- 20/3-8 Spark Plug and Ignition Coil
- 20/16 Capacitor
- 20/27 Shunt, Low Beam CEM
- 20/28 Shunt, Position/parking Lights/tail Light REM
- 20/29 Shunt, Fog Light REM
- 20/31 Shunt, Brake Light REM
- 20/32 Shunt, Indicator CEM, Left
- 20/33 Shunt, Position/parking Lights/tail Light REM
- 20/34 Shunt, Indicator CEM, Right
- 20/39 Shunt, Cargo Compartment 12V Outlet
- 26/4 Converter, Towbar Wiring
- 31/1-102 Ground Connection
- 53/### Junction Points
- 54/1-124 Connectors
- How to Use the Wiring Diagrams
- List of Components By Component Number
- Wire Color Code and Other Abbreviations
- Relays, General
- Diagnostic Aids
- Connector Views
- Electrical Diagrams
Technical Service Bulletins
Tools and Equipment