Table 2, Trouble Code Table (TC 18 Knock Control Module; Replace ECU) Opel Calibra I

Fuel Injection Systems

Tabel 2, Trouble Codes

Code	Information Sensor	Remedy in
F0:DATA LIST
	Cause of Fault	No.	Trouble Code Storage when ...
	Remarks
18	KNOCK SIGNAL	08	· Coolant temperature lower than 30 °C/86 °F
	MODULE;		or load signal less than 1.4 ms
	REPLACE ECU		(value varies depending on engine speed)
			· Engine speed lower than 5000 rpm
			· Knock sensor circuit test failed
			(carried out by control unit)
			Replacement value:
			If the engine load signal is greater than 2.0 ms and
			the coolant temperature is higher than 45 °C/113 °F,
			the control unit retards the firing angle by up to
			13.5 °CA for safety reasons (value varies depending
			on engine speed).

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