Volkswagen Golf / Golf GTI / Golf Variant. Manual - part 87

5 - Repeat the drive cycle operation until all engine monitors

have successfully run through and passed.

6 - Remove the scan tool and switch the ignition off.

3.3

Diagnostic Modes 01 - 0A

The information provided in Modes 01 through 0A displays the

various levels of emission related data that may be monitored, as

well as the ability to retrieve and read stored DTCs, erase stored

DTCs, generate readiness codes, and select the various PIDs

and Test IDs used within the modes to monitor the engine, and

emission related component parameters.
♦

⇒ “3.3.1 Diagnostic Mode 01 - Read Current System Data”,

page 21

♦

⇒ “3.3.2 Diagnostic Mode 02 - Read Operating Conditions”,

page 23

♦

⇒ “3.3.3 Diagnostic Mode 03 - Read DTC Memory”,

page 24

♦

⇒ “3.3.4 Diagnostic Mode 04 - Erase DTC Memory”,

page 26

♦

⇒ “3.3.5 Diagnostic Mode 05 - Read Oxygen Sensor Monitor‐

ing Test Results”, page 26

♦

⇒ “3.3.6 Diagnostic Mode 06 - Read Test Results for Specific

Diagnostic Functions, 2014 - 2015 MY’s”, page 27

♦

⇒ “3.3.7 Diagnostic Mode 06 - Read Test Results for Specific

Diagnostic Functions, 2016 MY”, page 34

♦

⇒ “3.3.8 Diagnostic Mode 07 - Read Faults Detected During

the Current or Last Driving Cycle”, page 41

♦

⇒ “3.3.9 Diagnostic Mode 08 - Request Control of On-Board

System, Test or Component”, page 42

♦

⇒ “3.3.10 Diagnostic Mode 09 - Read Vehicle Information”,

page 42

♦

⇒ “3.3.11 Diagnostic Mode 0A - Check Permanent DTC Mem‐

ory ”, page 44

3.3.1

Diagnostic Mode 01 - Read Current Sys‐

tem Data

Note

Depending on scan tool and protocol used, the information in di‐

agnostic mode 01 may be referred to by different names such as

Test-ID (TID), Hex-ID, Component-ID (CID), or On-Board Diag‐

nostic Monitor Identifier (OBDMID).

Diagnostic Mode 01 makes it possible to access current emis‐

sions-related measured values and diagnostic data. The original

measured values (no replacement values), input and output data

and system status information are displayed using Diagnostic

Mode 1.
Test requirement
• Coolant temperature at least 80° C.
Procedure
– Connect the scan tool.
– Start the engine and run at idle.

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing    

21

– Select “Diagnostic Mode 1: Obtain data.”.
– From the following table, select the desired the “PID” that is to

be monitored, e.g. “PID $05 Coolant temperature”.

The current values of the component or system that is being

monitored will be displayed on the scan tool screen.

PID

Component or System

$00:

Supported PIDs $01 – $20

$01:

Monitoring Status Since Erasing Dtc Memory

$03:

Fuel System Status

$04:

Calculated Load Value

$05:

Coolant Temperature

$06:

O2 Sensor Bank 1

$07:

O2 Sensor Adaptation Value Bank 1

$0B:

Manifold Pressure

$0C:

Engine Speed

$0D:

Vehicle Speed

$0E:

Ignition Angle Cylinder 1

$0F:

Intake Air Temperature

$11:

Absolute Throttle Position

$12:

Secondary Air Status

$13:

Location of Oxygen Sensors

$15:

O2 Sensor Voltage (Jump Probes)

$1C:

OBD Requirements

$1F:

Time Since Engine Start

$20:

Supported PIDs $21 – $40

$21:

Distance Driven With Mil On

$23:

Fuel (Rail) Pressure

$2E:

Fuel Tank Vent Valve Control

$2F:

Fuel Tank Level

$30:

Number Of Warm Up Cycles Since Fault Memory Cleared

$31:

Distance Driven After Erasing Fault Memory

$33:

Ambient Air Pressure

$34:

O2 Sensor Voltage (Linear Probes)

$3C:

Catalyst Temperature Bank 1 Sensor 1

$40:

Supported PIDs $41 – $60

$41:

Diagnostic Status In This Cycle

$42:

Engine Control Module System Voltage

$43:

Absolute Load Value

$44:

Lambda Value

$45:

Relative Throttle Position

$46:

Ambient Air Temperature

$47:

Absolute Throttle Position (Redundant)

$49:

Accelerator Pedal Position 1 Absolute

$4A:

Accelerator Pedal Position 2 Absolute (Redundant)

$4C:

Throttle Position Set Point

$51:

Fuel Type

$56:

Offset Lambda Control Behind Catalyst, Bank 1

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

22

     Rep. Gr. ST - Generic Scan Tool

PID

Component or System

$60:

Supported PIDs $61 – $80

$70:

Boost Pressure Control

– Switch the ignition off.

3.3.2

Diagnostic Mode 02 - Read Operating

Conditions

When an emissions-related fault (pending DTC, visible in mode

07) is first detected, operating conditions are stored. Mode 02

makes it possible to access this freeze frame data as soon as this

fault is shown in mode 03. Each control module only shows freeze

frame data for one fault via mode 02. Therefore, there are two

priority levels. If there is a malfunction with higher priority, the

freeze frame data is overwritten.
– Fault with higher priority: Misfire malfunction or fuel trim mal‐

function.

– Fault with normal priority: All other emissions-related faults.

Note

Depending on scan tool and protocol used, the information in di‐

agnostic mode 02 may be referred to by different names such as

Test-ID, Hex-ID, Component-ID, or On-Board Diagnostic Monitor

Identifier (OBDMID).

Procedure
– Connect the scan tool.
– Start the engine and run at idle.

Note

If the engine does not start, crank the engine using starter for at

least 5 seconds, do not switch the ignition off afterward.

– Select “Diagnostic Mode 2: Obtain operating conditions.”.
– From the following table, select the desired the “PID”, e.g. “PID

$05 Coolant temperature” that is to be monitored.

The current values of the component or system that is being

monitored will be displayed on the scan tool screen.

PID

Component or System

$00:

Supported PIDs $01 – $1F

$02:

DTC Which Triggered Freeze Frame Data

$03:

Fuel System Status

$04:

Calculated Load Value

$05:

Coolant Temperature

$06:

O2 Sensor Bank 1

$07:

O2 Sensor Adaptation Value Bank 1

$0B:

Manifold Pressure

$0C:

Engine Speed

$0D:

Vehicle Speed

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

3. Diagnosis and Testing    

23

PID

Component or System

$0E:

Firing Angle Cylinder 1

$0F:

Intake Air Temperature

$11:

Absolute Throttle Position 1

$12:

Secondary Air Status

$1F:

Time Since Engine Start

$20:

Supported PIDs $21 – $3F

$23:

Fuel Pressure (Rail Pressure)

$2E:

Fuel Tank Vent Valve Control

$2F:

Fuel Tank Level

$33:

Ambient Air Pressure

$40:

Supported PIDs $41 – $5F

$42:

Engine Control Module System Voltage

$43:

Absolute Load Value

$44:

Lambda Value

$45:

Relative Throttle Position

$46:

Ambient Air Temperature

$47:

Absolute Throttle Position 2

$49:

Accelerator Pedal Position 1 Absolute

$4A:

Accelerator Pedal Position 2 Absolute

$4C:

Throttle Position Set Point

$51:

Fuel Type

$56:

Offset Lambda Control Behind Catalyst, Bank 1

$60:

Supported PIDs $61 – $80

$70:

Boost Pressure Control

– Switch Ignition OFF

3.3.3

Diagnostic Mode 03 - Read DTC Mem‐

ory

Diagnostic Mode 03 makes it possible to read emissions-related

faults (confirmed DTCs; faults which have activated the MIL) in

the ECM and in the TCM.
When the ECM recognizes an emissions-related fault in two con‐

secutive drive cycles, it sends a request to the instrument cluster

over the CAN to turn on the malfunction indicator lamp. If an elec‐

tronic throttle malfunction is recognized, the ECM will send a

request to the instrument cluster over the CAN to turn on the

electronic power control warning lamp.
The DTCs are sorted by SAE code with the DTC tables consisting

of a 5-digit alphanumeric value.

Note

Depending on the scan tool and protocol used, diagnostic mode

03 and the information provided may be referred to by a different

name.

The following tables provide a breakdown and explanation of the

DTC code.

GTI 2014 ➤

Generic Scan Tool - Edition 04.2015

24

     Rep. Gr. ST - Generic Scan Tool