Preliminary work: Function test 11

Preparation for Test (DTC readout): 1. Fuses OK. 2. Battery voltage >11 V. 3. voltage supply to control modules and CAN data lines ok, 4. Connect Hand-Held Tester (HHT) according to connection diagram shown in section 0. Note: The diagnostic trouble codes (DTC's) can only be read out and erased using the Hand-Held Tester (HHT). Entry into DTC memory of CL with DAS 3 is via HHT display as follows: Function-Closing systems-Central locking or DAS-DTC memory. While performing the DTC readout it is possible that DTCs may appear that are not relevent to the system being checked, meaning that all stored DTCs in that particular control module are being displayed. Note regarding Diagnostic Trouble Codes (DTC's): Current diagnostic trouble codes are highlighted in black on the display. Additional detailed fault information based on fault type is displayed with nearly all diagnostic codes (DTC's) such as: > Resistance too great < Resistance too low - Short circuit to ground (GND) + Short circuit to positive (POS) -//- Open circuit Abreviations: DBE Roof control panel control module (N70) EZS Electronic ignition switch (N73) SAM Signal pick-up and activation module (N10/1) TSG1 Door control module 1 (N69/2) TSG2 Door control module 2 (N69/1) The above noted abreviations are in the second column of the following DTC memory table in bold type to advise of hints (regarding in which of the control modules the actual values or activations are stored).

DTC		Possible cause	Hints	Test step/Remedy 1)
		Electronic ignition lock control module (N73)	EZS	Replace N73
		Electronic ignition lock control module (N73)	EZS	Replace N73
		Electronic ignition lock control module (N73)	EZS	Ignore fault codes, Erase DTC memory.
		Roof control panel control module (N70)	DBE	Replace N70
		Signal pick-up and activation module (SAM) (N10/1)	SAM	Replace N10/1
		Low voltage	EZS	D.M., B&A, Vol. 2
		Excessive voltage	EZS	D.M., B&A, Vol. 2
		CAN: communication fault with PSE	EZS	D.M., B&A, Vol. 2
		CAN-L: Data line -//-,, -, +	EZS	D.M., B&A, Vol. 2
		CAN-H: Data line -//-,, -, +	EZS	D.M., B&A, Vol. 2
		CAN-L: communication fault with front driver-side/passenger-side door control module (N69/1, N69/2)		D.M., B&A, Vol. 2
		CAN-H: communication fault with front driver-side/passenger-side door control module (N69/1, N69/2)		D.M., B&A, Vol. 2
		CAN: communication fault with Roof control panel control module (N70)	EZS	D.M., B&A, Vol. 2
		CAN: communication fault with Signal pick-up and activation module (SAM) (N10/1)	EZS	D.M., B&A, Vol. 2
		Circuit 50 output -//-,, -, +	EZS	Replace N73
		ESC control module (N26/5) -//-, -, +	EZS	23 14.0, 23 15.0 (N26/5).
		ESC control module (N26/5) -//-, -, +	EZS	23 14.0, 23 15.0 (N26/5).

1) Observe Preparation for Test, see 22.