Preparation for Test: 1. Fuses ok, 2. Ignition: ON 3. Connect the Hand-Held Tester (HHT) to X11/4, according to diagram, see section 0. 4. Voltage supply to control modules and CAN data lines ok. See DM, B&A, Vol. 2 > section 7.1 > 23 5. All CAN data lines must be connected properly. The diagnostic trouble codes (DTC's) can only be read out and erased using the Hand-Held Tester (HHT). DTC's for one particular system may be stored in other control modules, therefore readout the DTC's from all other relevant control modules as well. When reading out DTC's, all stored DTCs will appear, which means that some of the DTCs that appear, will not be relevant to the system being checked. Non-relevant DTCs will be described in the particular system. Note regarding DTCs Only those DTCs as noted in 12, are relevant for the convenience feature system. 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 positive (POS) - short circuit to ground (GND) -//- open circuit With some fault codes, additional information as well as fault frequency can be read out. Fault frequency Faults are noted by frequency of occurrence, i.e.: 4 periodic faults, 4 occurances.

DTC		Possible cause	Test step/Remedy 1)
		Roof control panel control module (N70) defective.	N70
		Switch illumination, circuit 58d (short circuit)	Wiring.
		Lower control field control module (N72) does not belong to this model	Check vehicle coding, N72
		Low voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Excessive voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Voltage supply, circuit 15R is missing from circuit 15	See DM, B&A, Vol. 2 > section 7.1 > 23
		Sliding/pop-up roof switch (N70s1) signal time > 25 seconds or wiring (short circuit)	Wiring, N70
		Relay for sliding/pop-up roof (M12/1) does not switch over	N70
		Relay signal time for sliding/pop-up roof (M12/1) is > 25 seconds	N70
		Voltage supply for Hall sensors for sliding/pop-up roof motor (M12/1m1)	23 19.0
		Hall sensors for sliding/pop-up roof motor (M12/1m1) have wrong direction of rotation	M12/1
		Hall sensor 1 for sliding/pop-up roof motor (M12/1b1) defective	23 19.0 M12/1
		Hall sensor 2 for sliding/pop-up roof motor (M12/1b2) defective	23 19.0 M12/1
		Lower control field control module (N72) defective.	N72
		Lower control field control module (N72) incorrect	Check vehicle coding, N72
		Low voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Excessive voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Left front power window switch (N72s1) signal time > 25 seconds or wiring (short circuit) All except Model 208.4. On model 208.4, switch (S21/1) is installed in place of switch N72s1. S21/1 is connected to the Roll bar/power soft top control module (N52). Read DTC's out of Roll bar/power soft top control module.	N72 N52
		Right front power window switch (N72s1) signal time > 25 seconds or wiring (short circuit) On model 208.4, switch (S21/1) is installed in place of switch N72s1. S21/1 is connected to the Roll bar/power soft top control module (N52). Read DTC's out of Roll bar/power soft top control module.	N72 N52
		Left rear power window switch (N72s3) signal time > 25 seconds or wiring (short circuit)	N72
		Right rear power window switch (N72s4) signal time > 25 seconds or wiring (short circuit)	N72
		Front driver-side door control module (N69/1) defective.	N69/1
		Low voltage	See DM, B&A, Vol. 2 > section 7.1 >23
		Excessive voltage	See DM, B&A, Vol. 2 > section 7.1 >23
		Left front door lock switch (S86/1s1) 2) (CF) unlock signal time > 25 seconds or wiring (short circuit)	23 22.0, 23.0
		Left front door lock switch (S86/1s2) 2) (CF) lock signal time > 25 seconds or wiring (short circuit)	23 22.0, 23.0
		Relay for left front power window motor (M10/3) does not switch over	N69/1
		Relay signal time for left front power window motor (M10/3) is > 25 seconds	N69/1
		Voltage supply for Hall sensors for left front power window motor (M10/3) or wiring (short circuit)	23 6.0 23 7.0
		Hall sensors for left front power window motor (M10/3) have wrong direction of rotation	M10/3
		Hall sensor 1 for left front power window motor (M10/3) defective	Wiring, M10/3
		Hall sensor 2 for left front power window motor (M10/3) defective	Wiring, M10/3
		Left front power window motor (M10/3) current draw	Check M10/3 for possible binding, M10/3
		Front passenger-side door control module (N69/2) defective.	N69/2
		Low voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Excessive voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Right front door lock switch (S87/1s1) 2)(CF) unlock signal time > 25 seconds or wiring (short circuit)	23 22.0, 23.0
		Right front door lock switch (S87/1s2) 2)(CF) lock signal time > 25 seconds or wiring (short circuit)	23 22.0, 23.0
		Relay for right front power window motor (M10/4) does not switch over	N69/2
		Relay signal time for right front power window motor (M10/4) is > 25 seconds	N69/2
		Voltage supply for Hall sensors for right front power window motor (M10/4) or wiring (short circuit)	23 11.0 23 12.0
		Hall sensors for right front power window motor (M10/4) have wrong direction of rotation	M10/4
		Hall sensor 1 for right front power window motor (M10/4) defective	Wiring, M10/4
		Hall sensor 2 for right front power window motor (M10/4) defective	Wiring, M10/4
		Right front power window motor (M10/4) current draw	Check M10/3 for possible binding, M10/4
		Rear driver-side door control module (N69/3) defective.	N69/3
		Low voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Excessive voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Left rear power window switch (S21/3) signal time > 25 seconds or wiring - (short circuit to ground)	23 15.0
		Short circuit between rear driver-side door control module (N69/3) and left rear power window switch (S21/3), Illumination for left rear power window switch (S21/3), End stage for rear driver-side door control module (N69/3).	Wiring. S21/3 N69/3
		Relay for left rear power window motor (N69/3m1) does not switch over	N69/3
		Relay signal time for left rear power window motor (N69/3m1) is > 25 seconds	N69/3
		Voltage supply for Hall sensors for left rear power window motor (N69/3m1) or wiring (short circuit)	N69/3
		Hall sensors for left rear power window motor (N69/3m1) have wrong direction of rotation	N69/3
		Hall sensor 1 for left rear power window motor (N69/3m1) defective	N69/3
		Hall sensor 2 for left rear power window motor (N69/3m1) defective	N69/3
		Rear passenger-side door control module (N69/4) defective.	N69/4
		Low voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Excessive voltage	See DM, B&A, Vol. 2 > section 7.1 > 23
		Right rear power window switch (S21/4) signal time > 25 seconds or wiring - (short circuit to ground)	23 17.0
		Short circuit between rear passenger-side door control module (N69/4) and right rear power window switch (S21/4), Illumination for right rear power window switch (S21/4), End stage for rear passenger-side door control module (N69/4).	Wiring, S21/4 N69/4
		Relay for right rear power window motor (N69/4m1) does not switch over	N69/4
		Relay signal time for right rear power window motor (N69/4m1) is > 25 seconds	N69/4
		Voltage supply for Hall sensors for right rear power window motor (N69/4m1) or wiring (short circuit)	N69/4
		Hall sensors for right rear power window motor (N69/4m1) have wrong direction of rotation	N69/4
		Hall sensor 1 for right rear power window motor (N69/4m1) defective	N69/4
		Hall sensor 2 for right rear power window motor (N69/4m1) defective	N69/4

1) Observe Preparation for Test, see 22. 2) (only )