8.2 System voltage circuit · Note: Fault code 4802 (undervoltage)concerns the power supply of the PSM control module. It is stored

911 Carrera (996) PSM diagnosis 8.2 System voltage circuit Note: Fault code 4802 (undervoltage)concerns the power supply of the PSM control module. It is stored if the vehicle speed is greater than 6km/h. Once the vehicle voltage is within the permissible voltage range again, the PSM system is switched back on and the indicator lights go out. Test Work instruction Result Possible causes of fault TOI Test: open circuit in ground circuit Less than No: :J Ohm Open circuit or high contact resistance Ignition off oetween: Pull wiring harnessplug off of: PSMcontrol module wiring harness plug ISM control module terminals 1, 5 Measure resistance between the and Tollowingterminals: ground point PSM PSM control module wiring harness Dlug (wiring harness side) terminals I, 5 and ! ,ground IYes: EOl I" -Erase fault memory and read out a ain after test drive 45 -D 235