Fault type - Frequency counter/Temperature/Voltage; Speed/Time of occurrence. · Voltage The value indicates t

911 Turbo (996) PCM2/CDR23 91 Fault type - Frequency counter/Temperature/Voltage; Speed/Time of occurrence. Voltage The value indicates the voltage at the time the fault occurred. Vehicle speed The value indicates the vehicle speed at the time the fault occurred. Vehicle hand-over Note! The CDR23 is transferred into production mode (low-current mode) in production. As known from other systems (alarm system, instru- ment cluster, amplifier, roll-over bar), the CDR23 must be activated with the 9588 Porsche System Tester ll. 1. 9588 Connect and start the Porsche System Tester II and switch on the ignition. 2. Select the menu item 'Special functions' and press the >> key. 3. Select the menu item 'Vehicle hand-over' and press the >> key. 4. Follow the instructions of the 9588 Porsche System Tester II. Display '*' in the menu 'Control modules CDR23' and menu 'MOST component check'. Different required and actual installed components lists When the 'automatic control module search' is complete, the follow- ing display '*' appears in front of the control module description 'PCM2' in the 'Control modules' menu, as well as in the 'PCM2 MMI function selection' in front of the entry 'MOST required installed components list' if the 9588 Porsche System Tester ll establishes a difference between the required and actual installed components list and there is no fault code in one of the fault memories of the MOST control modules. If there is a fault code present in one of the MOST control modules, the display '*' is only shown in the 'PCM2 MMI function selection' in front of the line 'MOST required installed components list'. If there is a display in the menu Control module, an existing fault code has priority and a '#' is set. CDR23 Replacement The CDR23 is provided in 'active production mode' as a spare part. Each time the vehicle is started, the stored PCM2 code is com- 9101 CDR23 - Introduction 91-140 page 3 Printed in Germany – 43, 2003 EINCRlwl