Checking operation of camshaft timing control: Audi 1.8 (ADR)

Special tools and workshop equipment required

VAS 5051 with VAS 5051/1 and VAS 5051/2

or

V.A.G 1551 with V.A.G 1551/1

Test requirements:

Coolant temperature at least 80 °C

Test sequence

Attention:
Always attach testers and measuring instruments to back seat and have them operated from there by a second person.
If testers and measuring instruments were to be operated from front passenger's seat, person sitting there could suffer injury in the event of an accident due to triggering of front passenger's airbag.

Connect vehicle diagnostic, testing and information system VAS 5051 or fault reader V.A.G 1551 and enter address word "01" to select the engine electronics control unit.-- The engine must be idling:

=> Motronic Injection and Ignition System (4-cyl., 5-valve); Repair Group 01; Motronic self-diagnosis; Connecting vehicle diagnostic, testing and information system or fault reader V.A.G 1551 and selecting functions
Motronic Injection and Ignition System (4-cyl., 5-valve)
Motronic self-diagnosis
Connecting vehicle diagnostic, testing and information system or fault reader V.A.G 1551 and selecting functions

Rapid data transfer
HELP
Select function XX
Display readout:

Enter "08" for "Read measured value block" function and confirm with Q key.

Read measured value block
Q
Enter display group number XXX
Display readout:

Enter "025" for "Display group number 025" and confirm with Q key.

Read measured value block 25
⇒
1
2
3
4
Display readout:

Check camshaft timing control specifications.

Display zones
1 · 2 · 3 · 4
Display group 025: Camshaft timing control at idle
Display · ° CA · X · X · X · ° CA
Display · Operating status · Phase sensor setting variance · System state · Camshaft / timing control
Specification · Idling · -30...30° CA · X · X · 0 · -3...3° CA
Note · Readout 0 = camshaft timing control OFF

Run a test drive.

Display zones
1 · 2 · 3 · 4
Display group 025: Camshaft timing control at idle
Display · ° CA · X · X · X · ° CA
Display · Operating status · Phase sensor setting variance · System state · Camshaft / timing control
Specification · Full throttle · -30...30° CA · X · X · 1 · 15...21° CA
Note · Readout 1 = camshaft timing control ON

Notes:

If a value between 3.0 °CA and 15.0 °CA is displayed during the test drive, the electric camshaft adjustment valve is switching the oil pressure correctly to the mechanical camshaft adjuster, but the mechanical camshaft adjuster is unable to reach its final position (e.g. due to a jam).
Check camshaft adjustment solenoid valve =>Page
15-85
.