Preparation for Test 1. Fuse F1-22, and F4-1, F4-2, F4-3, F4-4 ok, 2. Battery voltage 11 - 14 V. 3. Ignition: ON 4. Connect the Hand-Held Tester (HHT) to X11/4, according to diagram, see section 0. CAUTION! Erasing the Convenience Feature (CF) DTC memory, will also erase the DTC memory for the Combination Control Module (N10-1) and Mirror, steering column adjustment, heated mirrors (MSC).

Actual value	Possible cause	Test step/Remedy 1)
	Circuit 15R	23 4.0
	Circuit 15	23 4.0
	Central locking	23 40.0
	Safety opening	23 40.0
	Left front power window switch (S21s1)	23 21.0, 22.0
	Left front power window motor close relay	23 32.0
	Left front power window motor open relay	23 32.0
	Right front power window switch (S21s2)	23 23.0, 24.0
	Right front power window motor close relay	23 34.0
	Right front power window motor open relay	23 34.0
	Left rear power window switch (S21s3, S21/3),	23 25.0, 26.0
	Left rear power window motor close relay	23 36.0
	Left rear power window motor open relay	23 36.0
	Right rear power window switch (S21s4, S21/4)	23 27.0, 28.0
	Right rear power window close relay	23 38.0
	Right rear power window motor open relay	23 38.0
	Sliding/pop-up roof switch (S13/2): open	23 11.0, 14.0
	Pop-up roof switch (S13/2): open	23 11.0, 16.0
	Sliding/pop-up roof switch (S13/2): close	23 11.0, 12.0, 18.0
	Sliding/pop-up roof closed	23 19.0
	Activation: close pop-up roof, open sliding roof, combination control module output (N10-1).	23 13.0, 15.0
	Activation: open pop-up roof, close sliding roof, combination control module output (N10-1).	23 17.0, 19.0
	Lock switch signal: Unlock from RCL control module (N54).	23 40.0
	lock switch signal: Lock from RCL control module (N54).	23 40.0

1) Observe Preparation for Test, see 22.