PCM2/CDR23 911 Turbo (996)91 · • Never start engine without securely connected battery.

PCM2/CDR23 911 Turbo (996)91 • Never start engine without securely connected battery. • Never pull off or push on plug connections for the control modules or other electronic components when the ignition is switched on. General information on the fault memory Fault code setting conditions Fault codes can be set in several circumstances, e.g.: ♦battery disconnected. ♦plug connections disconnected. ♦power failure. In these circumstances, no fault is present in the system and the fault memory must be erased. Fault memory Info key F8 In order to be able to assess the fault exactly, the fault memory Info key F8 must be pressed. This information should be saved using the Save key F4 and printed out. If a fault code is stored with "not present" status and no other problems are present, then the fault memory must be erased. Open circuit - short to ground / voltage short / version; vehicle parameters / counter Supply voltage - first occurrence The value indicates the voltage at the time the fault occurred. Hourmeter - first occurrence The value indicates the operating hours at the time the fault first occurred. Fault type The following display types are available: ♦present. ♦not present. Frequency counter When a fault first occurs, a fault entry is made in the fault memory and the counter is simultaneously set to 50. If a fault is present, the counter is incremented by 1 for each "ignition on". The maximum count is 255. The counter is decremented if the fault is no longer present. The fault memory is automatically erased when the counter reaches 0. If the error occurs again when the counter is between 1 and 49, the counter is reset to 50. Vehicle hand-over The PCM2 is converted to delivery mode (low-current mode) in pro- duction. As known from other systems (alarm system, instrument 91-121 page 2 9101 Telephone/telematics - Introduction EINTLlwl Printed in Germany – 43, 2003