End Output (Function 06)

Special Tools, Testers And Auxiliary Items:
- VAG 1551/VAG 1552 Scan Tool using VAG 1551/3 adaptor cable
- VAG 1598/18 Test Box
- Fluke 83 multimeter (or equivalent)
- VW 1594 Adaptor kit
- Wiring diagram

Requirement:
- Fuse 18 OK

Test sequence:
- Connect VAG 1551 (VAG 1552) Scan Tool
- With engine idling, press 0 and 1 buttons to select Address Word 01: "Engine Electronics."

Display will appear as shown:

Rapid Data Transfer HELP
Select Function XX

- Press 0 and 8 buttons to select Function 08 "Read measuring value block."
- Press Q button to enter selection.

Display will appear as shown:

Read Measuring Value Block HELP
Input Display Group number XXX

- Press 1, 2 and 0 buttons to select "Display group number 120."
- Press Q button to enter selection.

Display will appear as shown: (1 to 4 = Display zones).

Read Measuring Value Block 120 --->
1 2 3 4

- Check the resistance value for Oxygen sensor heating.




Display Group 120: Oxygen Sensor Heating (Before Cat)

- Press -> button
- Press 0 and 6 buttons to select Function 06 "End output."
- Press Q button to enter selection.
- Switch OFF ignition.




Relevance of figures in 8 digit number block




Disconnect (black) 4-pin connector to Oxygen sensor-1- (before cat) G39.




Connect multimeter with aux. cables from VW 1594 to measure resistance at terminals 1 + 2 on connector to Oxygen sensor.
- Measure resistance value.
- specification: 0.0 to 24.2 Ohms.

If specification not obtained:
- Replace Oxygen sensor (before cat) G39.

If specification obtained:
- Switch multi meter to 20 Volt DC range.




- Connect multimeter between terminals 1 + 2 of ECM connector using jumper wires from VW 1594 adaptor kit.
- Measure Voltage supply when display group 120, Display zone 4,1st position from left = 1.
- Specification: 11.0 to 14.5 Volts

- Measure Voltage supply when display group 120, Display zone 4,1st position from left = alternating 0 and 1.
- Specification: between 0.0 and 12.0 Volts and alternating.

If no Voltage present:




- Connect multimeter between terminal 1 of ECM connector + Ground using jumper wires from VW 1594 adaptor kit.
- Specification: 11.0 to 14.5 Volts

If again no Voltage present:
- Check wiring between terminal 1 and fuse/relay panel using wiring diagram.

If Voltage present:




- Connect multimeter between terminals 2 and B+ of ECM connector using jumper wires from VW 1594 adaptor kit.
- Measure Voltage supply when display group 120, Display zone 4, 1st position from left = 1.
- Specification: 11.0 to 14.5 Volts

- Measure Voltage supply when display group 120, Display zone 4,1st position from left = alternating 0 and 1.
- Specification: between 0.0 and 12.0 Volts and alternating.
- Switch OFF ignition.

If Voltage not present:




- Connect VAG 1598/18 Test Box to ECM wiring harness.




- Check for open circuit between Test Box and 4-pin harness connector using wiring diagram, connecting as follows:
- terminal 2 + socket 12.
- Wire resistance: 1.5 Ohms maximum.

If wiring OK
- Replace Engine Control Module J220.
- Perform Basic setting.
- Create Readiness code again.

If DTC memory has been erased.
- Read-out Readiness code.