Checking wiring
WARNING: This page is about a different variant/trim than selected.
- Connect test box VAG1598/31 to control module wiring harness. Engine control module remains disconnected.
- Check wiring between test box and 2-pin connector for open circuit according to wiring diagram.
| G61 | G66 | |
| Terminal 1+Socket | 106 | 107 |
| Terminal 2+Socket | 99 | 99 |
| Wire resistance: max. 1.5 Ω | ||
- Additionally check wires for short to one another.
Specification: ∞Ω
If no wiring malfunction is detected:
- Loosen knock sensor and tighten again to 20 Nm.
- Perform a test drive again and check knock control specifications on display.
Observe the valid safety precautions when road testing vehicle → Safety precautions .
During the road test the following operating conditions must be fulfilled:
- Coolant temperature must exceed 85 ° C.
- When the temperature is reached, the operating conditions
Idling
Part throttle
Wide open throttle
Overrun
Must be attained several times.
- At wide open throttle the engine speed must exceed 3500 rpm.
- Again check control module DTC memory.
If malfunction is still present:
- Replace knock sensor(s).
- Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory → DTC memory (functions 02 and 05), checking and erasing
- Read readiness code → Readiness code, reading . If DTC memory has been erased, readiness code must be generated again:
Engine code AWW, → Readiness code for engine code AWW, generating
Engine code AWP, → Readiness code for engine code AWP, generating