996 Carrera Group 0 Part 1 Diagnosis / PAGE 173
PSM diagnosis 911 Carrera 4 (996) · 8.2 System voltage circuit
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PSM diagnosis 911 Carrera 4 (996)
8.2 System voltage circuit
Note: Fault!code4802 (undervoltage)concernsthe power supply of the PSMcontrol module. It is stored
if the vehicle speed is greater than 6km/h. Once the vehicle voltage is within the permissiblevoltage
range again~the PSM system is switched back on and the indicator lights go out.
Test Work instruction Result Possible causes of fault
T01 open circuit in ground circuit ILess than No:
5 Ohm -Open circuit or high contact resistance
.Ignition off between:
.Pull wiring harness plug off of: PSMcontrol modulewiring harnessplug
PSM control module terminals 28, 29
.I~nition on and
.Measure resistance betweenthe ground point 2
following terminals:
PSM control module wiring harness
plugI (wiring harness side) terminals
28:,29
and
EO!
-Ease fault memory and read out
a in after test drive
45 -D 110Test:IYes:
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