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F0:Data List - Test Step 29 Knock Control Opel Corsa B

Multec - S (C 16 XE) F0:DATA LIST

No.TECH 1 DisplayConditions for CheckingNominal ValueTrouble CodesTerminal
29KNOCK CONTROLEngine running at idle speed, at operating temperatureENABLED--
Engine running in partial load range, at operating temperature
Accelerate
DISABLED

If the display ENABLED appears on TECH 1 during a test drive in the partial load range, initiate trouble - shooting.

Trouble - shooting:Nominal Value:Cause of Fault:

(If nominal value is not attained)

· In case the values read off by TECH 1 deviate from the nominal values noted above, check the various sensor input signals:

1. Mass airflow meter

2. Throttle valve potentiometer

3. Controlled canister purge valve

4. Coolant temperature

Similarly check the following possible causes for engine knock:

1. Spark plugs with incorrect heat rating

2. Spark plugs with carbon deposits

3. Defective spark plug connector4. Damaged ignition cable

5. Valves with combustion residue