Volkswagen Workshop Manuals
Passat Sedan V6-3.6L (BLV) (2008)
Powertrain Management > Ignition System > Sensors and Switches - Ignition System > Knock Sensor > Component Information > Testing and Inspection > Page 3722
Specified value: 1.5 ohms Max.
If the specified value was not obtained:
Check the wiring connection for an open circuit, high resistance or short circuit to voltage or ground.
Check the wiring connection for damage, corrosion, loose or broken terminals.
If necessary, repair the faulty wiring connection.
If no malfunction is found in the wiring and the resistance is OK:
Replace the knock sensor that set the code.
Erase the DTC memory. Refer to => [ Diagnostic Mode 04 - Erase DTC Memory ] See: Computers and Control Systems/Testing and
Perform a road test to verify repair.
If the DTC does not return:
Generate readiness code. Refer to => [ Readiness Code ] See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles
If the DTC does return, no malfunction is detected in the wiring and the resistance is OK:
Replace the Motronic Engine Control Module (ECM) (J623). Refer to the Repair Information.
Assembly is performed in the reverse of the removal.
After repair work, the following work steps must be performed in the mentioned sequence:
1. Check the DTC memory. Refer to => [ Diagnostic Mode 03 - Read DTC Memory ] See: Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Diagnostic Modes 01 - 09.
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