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Home >> Volkswagen >> 1996 >> Passat Wagon (3A5) L4-2.0L (ABA) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Scan Tool Testing and Procedures >> With VAG 1551 >> VAG 1551 Connecting and Selecting Address Word >> Address Word 33 "CARB/OBD II" >> Transfering Diagnostic Data, Mode 1

Transfering Diagnostic Data, Mode 1



TRANSFERRING DIAGNOSTIC DATA, MODE 1

In mode 1 the current diagnostic data can be interrogated. Additionally the readiness code can be displayed (PID1 display field 4).

Breakdown of parameter identification (PID) See diagnostic data below.

The On Board Diagnostic (OBD) program can be used to check whether individual parameters correspond to actual engine condition.

- Press -1- button to select mode 1 transfer diagnostic data.

Display will appear as shown

Mode 41 PID x Module 10* ->
diagnostic data

Module 10* or 1A* will be displayed alternately when:
- Module 10 = Engine Control Module (ECM) -J220- or
- Module 1A = Transmission Control Module (TCM) -J217- have the same parameter identifications (PID).

Example: Engine Coolant Temperature is measured at the ECM and ATF at the TCM.

Diagnostic data must be individually interrogated via the -> button.Press the Print button to obtain a printout.

The MIL is said to be switched ON when the engine is not idling, and only the ignition is switched ON.

Diagnostic data

Relevance of figures in 8 digit number block

Display will appear as shown

Mode 41 PID 1 Module 10 ->
00000000 xxxxxxxx xxxxxxxx xxxxxxxx





Relevance of figures in 8 digit number block

Display will appear as shown

Mode 41 PID 1 Module 10 ->
xxxxxxxx 00000111 xxxxxxxx xxxxxxxx





Relevance of figures in 8 digit number block

Display will appear as shown

Mode 41 PID 1 Module 10 ->
xxxxxxxx xxxxxxxx 01101101 xxxxxxxx





Display will appear as shown

Mode 41 PID 1 Module 10 ->
xxxxxxxx xxxxxxxx xxxxxxxx 00000000

If the specification is not obtained in display field 4 and a 1 is displayed, then the appropriate diagnostic sequence has not yet been performed. The readiness code must still be created. Readiness Code, Creating





Relevance of figures in 8 digit number block

- Press -> button to display any additional diagnostic data.

PID3: Injection status

Mode 41 PID 3 Module 10 ->
Injection status xxxxx1xx xxxxxxxx

When the 3rd position from the right is 1, the injection status is recognized as available.

- Press -> button.

PID4: Calculated load value %

Mode 41 PID 4 Module 10 ->
Calculated load value 2%

Specification at idle approx.: 2%

- Press -> button.

PID5: Engine coolant temperature °C

Mode 41 PID 5 Module 10 ->
Engine Coolant Temp. °C

Indicates the current engine coolant temperature

Specification for engine at normal operating temperature: 80 to 105 °C (176 ° to 221 °F)

- Press -> button.

PID5: Coolant temperature °C

Mode 41 PID 5 Module 1A ->
Coolant temp °C

Indicates the current ATF temperature

When the ATF specification is above 140 °C (284 °F) with engine at normal operating temperature, 80 °- 105 °C (176 °- 221 °F) a DTC will be stored.

- Press -> button.

PID6: Oxygen sensor control indicator %

Mode 41 PID 6 Module 10 ->
Oxygen control Integrator-B1 x%

The oxygen sensor control integrator in % is displayed here.

- Press -> button.

PID7: Oxygen sensor control adaptation %

Mode 41 PID 7 Module 10 ->
Oxygen control Adaptation-B1 x%

The adaptation increases the value in % depending upon altitude.

- Press -> button.

PID12: Engine speed (RPM)

Mode 41 PID 12 Module 1A ->
Engine speed rpm

The input speed from transmission is displayed here.

- Press -> button.

PID12: Engine speed (RPM)

Mode 41 PID 12 Module 10 ->
Engine speed rpm

The engine speed (RPM) is displayed here.

- Press -> button.

PID13: Vehicle speed (mph)

Mode 41 PID 13 Module 1A ->
vehicle speed x mph

Current vehicle speed display

- Press -> button.

PID13: Vehicle speed (mph)

Mode 41 PID 13 Module 10 ->
Vehicle speed x mph

Current vehicle speed display

- Press -> button.

PID14: Ignition angle °

Mode 41 PID 14 Module 10 ->
Ignition angle 12°

Specification at idle: 12° fluctuating.

If the displayed ignition angle is constant and later than 12°, then the cause can be a faulty knock sensor.

- Press -> button.

PID15: Intake air temperature °C

Mode 41 PID 15 Module 10 ->
Intake Air Temp. xxx °C

Measured at idle, slightly above ambient temperature

- Press -> button.

PID16: Mass air flow g/sec

Mode 41 PID 16 Module 10 ->
Mass Air Flow 4.30 g/sec

Measured at idle approx.: 4.3 g/sec.

If the value is below 2.5 g/sec. unmetered (outside) air can be the cause.

- Press -> button.

PID17: Throttle position %

Mode 41 PID 17 Module 10 ->
Throttle Position 3%

Specification at idle: 2 - 4%.

A too large or small a value leads to DTC: P1582

- Press -> button.

PID18: Secondary air injection status

Mode 41 PID 18 Module 10 ->
Secondary Air Injection status xxxxx1xx

When the 3rd position from right is 1, the secondary air injection system is recognized as available.

- Press -> button.

PID19: Location / heated oxygen sensor

Mode 41 PID 19 Module 10 ->
Location of Oxygen sensor xxxxxx11

hen the 1st and the 2nd position from right is 1, the heated oxygen sensors are recognized as available.

- Press -> button.

PID20: Heated oxygen sensor 1: 0.445 V x%

Mode 41 PID 20 Module 10 ->
B1-S1 0.445 V x%

- The displayed value in volts must fluctuate between 0 and 1.0 volts.

- Press -> button.

PID21: Heated oxygen sensor 2: 0.445 V x%

Mode 41 PID 21 Module 10 ->
B1-S2 0.445 V x%

- The displayed value in volts must fluctuate between 0 and 1.0 volt, however it must be at a slower rate than the HO2S (before three way catalytic converter).

- Press C button to exit mode 1.
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