Volkswagen Golf / Golf GTI / Jetta. Manual - part 104

26-54

 

  

   Note:  

  

  

 Because leak may be at top of fuel tank, it may 

not be possible to locate through fuel 
pump/sending unit access plate. 

  

  

 Lower fuel tank if necessary to locate leak. 

  

  

CAUTION!

 

  

  

Do not return vehicle to the customer without 
having performed a proper diagnosis and 
repair.

 

Secondary air system

Select a topic 

 

01 - On Board Diagnostic (OBD)

  

On Board Diagnostic (OBD)

  

On Board Diagnostic (OBD) features

  

Electronic Power Control (EPC) Warning Light -K132-

  

Malfunction Indicator Light (MIL) -K83-

  

VAG 1551 and Motronic Engine Control Module (ECM)  -J220-, 
connecting and selecting

  

VAS 5051 and Motronic Engine Control Module (ECM) -J220-, 
connecting and selecting

  

DTC memory

  

DTC memory, checking and erasing

  

Automatic test sequence

  

DTC table: SAE P0 codes

  

DTCs P0010 to P0704, VAG 16394 to 17088

  

DTC table: SAE P1 codes

  

DTCs P1047 to P1912, VAG 17455 to 18322

  

DTC table: SAE P2 codes

  

DTCs P2101 to P2138, VAG 18533 to 18570

  

DTC table: SAE P3 codes

  

DTCs P3211 to P3266, VAG 19667 to 19722

  

Output Diagnosis Test Mode (DTM)

  

Output Diagnosis Test Mode (DTM), performing

  

Readiness code

  

Function

  

Read readiness code

  

Generating readiness code

  

Readiness code, generating (overview)

  

Measured value (data) blocks

  

Safety precautions

  

Read measured value (data) block

  

Measured value blocks, display groups 0...9 - Basic functions, 
evaluating

  

Measured value blocks, display groups 10...29  - Ignition, evaluating 

 

Measured value blocks, display groups 30...33, 99  - Oxygen Sensor 
(O2S) control, evaluating

  

Measured value blocks, display groups 50...69  - Speed control, 
Evaluating

  

Measured value blocks, display groups 70...77  - Reducing 
emissions, evaluating

  

Measured value blocks, display groups 86...89, 100  - Readiness 
code, evaluating

  

Measured value blocks, display groups 90...96  - Performance 

2.8 Liter VR6 4V Fuel Injection & Ignition, Engine Code(s): BDF

improvement, evaluating

  

Measured value blocks, display groups 120...129  - Communication, 
evaluating

  

24 - Multiport Fuel Injection (MFI)

  

Fuel injection system, servicing

  

Component locations overview

  

Fuel injection system, general notes

  

Fuel injection system components, removing and installing

  

Intake manifold, disassembling and assembling 

 

Fuel rail, disassembling and assembling 

 

Air cleaner assembly, disassembling and assembling 

 

Safety precautions

  

Rules for cleanliness

  

Components, checking

  

Heated Oxygen Sensor (HO2S), checking

  

Oxygen Sensor (O2S) heating for Oxygen Sensor (O2S) Behind 
Three Way Catalytic Converter (TWC) -G130-, checking 

 

Mass Air Flow (MAF) sensor -G70- , checking

  

Throttle Valve Control Module -J338-, checking

  

Engine Coolant Temperature (ECT) sensors -G62- and -G2-, 
checking

  

Intake Air Temperature (IAT) sensor -G42-, checking

  

Engine Speed (RPM) Sensor -G28-, checking

  

Fuel injectors, checking 

 

Fuel injectors, checking for leaks and quantity injected

  

Residual pressure and fuel pressure regulator, checking

  

Intake Manifold Change-Over Valve -N156-, checking

  

Intake Air system, leak testing

  

Functions, checking

  

Idle speed check

  

Oxygen Sensor (O2S) and Oxygen Sensor control before Three Way 
Catalytic Converter (TWC), checking

  

Oxygen Sensor (O2S) and Oxygen Sensor control after Three Way 
Catalytic Converter (TWC), checking

  

Heated Oxygen Sensor (HO2S), checking aging

  

Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) 
-G130-, checking aging

  

Engine operating mode, checking

  

Motronic Engine Control Module (ECM) -J220-

  

Function

  

Engine Control Module (ECM) voltage supply, checking

  

"Voltage supply open circuit," followup procedure

  

Motronic Engine Control Module (ECM) -J220-, replacing

  

Motronic Engine Control Module (ECM) -J220-, coding

  

Motronic Engine Control Module (ECM)  -J220-, coding variations

  

Motronic Engine Control Module (ECM) -J220- to Throttle Valve 
Control Module -J338-, matching

  

Additional signals, checking

  

2.8 Liter VR6 4V Fuel Injection & Ignition, Engine Code(s): BDF

Vehicle Speed Signal, checking

  

A/C compressor signal, checking

  

Signal from Clutch Vacuum Vent Valve Switch -F36-, checking

  

Brake Light Switch -F- and Brake Pedal Switch (cruise control/Diesel 
Direct Fuel Injection -F47- signal, checking

  

Transmission Range signal, checking

  

Cruise Control System (CCS), checking

  

CAN-bus, checking

  

28 - Ignition/Glow plug system

  

Ignition system, servicing

  

General notes on ignition system

  

Ignition system components, removing and installing

  

Safety precautions

  

Test Data, Spark plugs

  

Camshaft Position (CMP) Sensor, checking

  

Ignition coil with power output stage, checking

  

Knock sensor, checking

  

Misfire detection, checking

  

2.8 Liter VR6 4V Fuel Injection & Ignition, Engine Code(s): BDF