Operation CHARM: Car repair manuals for everyone.

Related Tests, Information and Procedures



Nominal Values

With the ignition switched on

Supply voltage 11.5 to 13.5 volts

Pot. 1, convertible top
The values between pot. 1, calibration value 1, and pot. 1, calibration value 6, are calculated as percentage by the convertible-top control module.

If the actual values (measured values) of calibration values 1 and 6 differ, the convertible-top potentiometer must be replaced.

- Pot. 1 calibration value 1 Tester display must be less than < 1.6 volts
- Pot. 1 calibration value 2
- Pot. 1 calibration value 3
- Pot. 1 calibration value 4
- Pot. 1 calibration value 5
- Pot. 1 calibration value 6 Tester display must be greater than > 3.0 volt

Voltage measurement of convertible-top potentiometer
Switch on the ignition and measure voltage with test adapters 9619 and 9636 and the pin template 9636 and measure row 1, pins 12 and 21, with the voltmeter. Nominal value 0.4 - 4.4 volts.

Pot. 2, convertible-top compartment lid
The values between pot. 2, calibration value 2, and pot. 1, calibration value 4, are calculated as percentage by the convertible-top control module.

If the actual values (measured values) of calibration values 1 and 4 differ, the CTCL potentiometer must be adjusted.

- Pot. 2 calibration value 1 Tester display must be greater than > 1.0 volt
- Pot. 2 calibration value 2
- Pot. 2 calibration value 3
- Pot. 2 calibration value 4 Tester display must be less than < 3.9 volts < 3.9 volts

Voltage measurement of convertible-top compartment potentiometer
Switch on the ignition and measure voltage with test adapters 9619 and 9636 and the pin template 9636 and measure row 3, pins 1 and 3, with the voltmeter. Nominal value 0.5 - 4.4 volts.