Preliminary work: Diagnosis - Function Test 11

Prerequisite for reading DTC memory 1. Fuses in order 2. Battery voltage > 11 V. 3. Connect HHT according to connection diagram, see section 0. Starting 9/95, the DTC memory can be read only with the HHT.

Special Tools

Diagnosis - Diagnostic Trouble Code (DTC) Memory up to 9/95

Special Tools

DTC		Possible cause	Test step/Remedy 1)
		Power soft top control module (N52)	Replace (N52).
		Low voltage	23 1.0, 2.0
		RST/RB hydraulic unit, overload protection thermocouple (A7/5b1) >85 °C	23 3.0, 36.0
		RST/RB hydraulic unit, overload protection thermocouple (A7/5b1) >120 °C	23 3.0, 36.0
		RST/RB hydraulic unit (A7/5) locked up	23 3.0
		RST/RB hydraulic unit, overload protection thermocouple (A7/5b1)	23 36.0
		RST/RB hydraulic unit (A7/5)	23 3.0
		VSS status signal	23 22.0, 23.0
		Implausible VSS	23 22.0, 23.0
		RST/RB hydraulic unit (A7/5)	23 3.0
		Right power window activation	23 21.0, 25.0, 27.0
		Left power window activation	23 20.0, 24.0, 26.0
		Right front power window motor (M10/4), Hall-effect sensor 2)	Replace M10/4 (SMS, Job No. 82-600)
		Left front power window motor (M10/3), Hall-effect sensor 2)	Replace M10/3 (SMS, Job No. 82-600)
		Right front power window motor (M10/4), Hall-effect sensor not synchronized 2)	14 33.0
		Left front power window motor (M10/3), Hall-effect sensor not synchronized 2)	14 33.0
		Left front soft top "locked" switch (S84/1)	23 8.0
		Right front soft top "locked" switch (S84/2)	23 9.0
		Soft top "closed" switch (S84/4)	23 13.0
		Soft top "open" switch (S84/3)	23 12.0
		Left soft top fabric bow "locked" switch (A22s2)	23 5.0
		Right soft top fabric bow "locked" switch (A23s2)	23 6.0
		Left soft top fabric bow "closed" switch (A22s1)	23 7.0
		Soft top fabric bow "raised" switch (S84/6)	23 11.0
		Soft top compartment "open" switch (S84/5)	23 10.0
		Right soft top compartment cover "locked" switch (A25s2)	23 4.0
		RB "retracted" switch (S83/1)	23 14.0
		ATA/CF microswitch, left door (S86), right door (S87s1), trunk lid (S88s1)	23 38.0
		Left front door actuator (S47), right front door actuator (S48), trunk lid actuator (S49)	23 37.0
		Left front door "window down" limit switch (S21/9) 3)	23 15.0
		Right front door "window down" limit switch (S21/8) 3)	23 16.0
		Illogical limit switch signals	24
		Roll bar crash deployment	23 17.0
		Power soft top switch (S84)	23 18.0
		RB switch (S83) (manual operation)	23 19.0
		Power soft top switch (S84) indicator lamp	23 28.0
		RB switch (S83) (manual operation) indicator lamp	23 42.0
		Warning buzzer (E15h1)	23 39.0
		Power soft top control module (N52)	Replace (N52)
		Low voltage	23 1.0, 2.0
		RST/RB hydraulic unit, overload protection thermocouple (A7/5b1) >85 °C	23 3.0, 36.0
		RST/RB hydraulic unit, overload protection thermocouple (A7/5b1) >120 °C	23 3.0, 36.0
		RST/RB hydraulic unit (A7/5) locked up	23 3.0
		RST/RB hydraulic unit, overload protection thermocouple (A7/5b1)	23 36.0
		RST/RB hydraulic unit (A7/5)	23 3.0
		VSS status signal	23 22.0, 23.0
		Implausible VSS	23 22.0, 23.0
		RST/RB hydraulic unit (A7/5)	23 3.0
		Right front power window motor (M10/4), Hall-effect sensor	Replace M10/4 (SMS, Job No. 82-600)
		Left front power window motor (M10/3), Hall-effect sensor	Replace M10/3 (SMS, Job No. 82-600)
		Right front power window motor (M10/4), Hall-effect sensor not synchronized	14 36.0
		Left front power window motor (M10/3), Hall-effect sensor not synchronized	14 33.0
		Right front power window motor (M10/4), no Hall-effect sensor signal	23 27.0
		Left front power window motor (M10/4), no Hall-effect sensor signal	14 36.0
		Right power window activation, wire +, -, Power soft top control module (N52)	23 21.0, 25.0, 27.0
		Left power window activation, wire +, -, Power soft top control module (N52)	23 20.0, 24.0, 26.0
		Left front soft top "locked" switch (S84/1)	23 8.0
		Right front soft top "locked" switch (S84/2)	23 9.0
		Soft top "closed" switch (S84/4)	23 13.0
		Soft top "open" switch (S84/3)	23 12.0
		Left soft top fabric bow "locked" switch (A22s2)	23 5.0
		Right soft top fabric bow "locked" switch (A23s2)	23 6.0
		Left soft top fabric bow "closed" switch (A22s1)	23 7.0
		Soft top fabric bow "raised" switch (S84/6)	23 11.0
		Soft top compartment "open" switch (S84/5)	23 10.0
		Right soft top compartment cover "locked" switch (A25s2)	23 4.0
		RB "retracted" switch (S83/1)	23 14.0
		ATA/CF microswitch, left door (S86), right door (S87s1), trunk lid (S88s1)	23 38.0
		Illogical limit switch signals	24
		Voltage interruption on circuit 30	23 1.0
		Roll bar crash deployment, Hydraulic linkage separated from roll bar	23 14.0
		Power soft top switch (S84)	23 18.0
		RB switch (S83) (manual operation)	23 19.0
		Power soft top switch (S84) indicator lamp	23 28.0
		RB switch (S83) (manual operation) indicator lamp	23 42.0
		Warning buzzer (E15h1)	23 39.0

1) Observe Preparation for Test, see 22. 2) As of 12/94.