996 Carrera Group 0 Part 1 Diagnosis / PAGE 225
8.25 Switch-over valve 2 circuit · Test Work instruction Result Possible causes of fault
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8.25 Switch-over valve 2 circuit
Test Work instruction Result Possible causes of fault
voltage short in signal circuit ILessthan No:
,O.3V -Short circuit to voltage between:
.Ignition off PSMcontrol module
.Pull wiring harness plug off of: wiring harnessplug (wiring harness
PSM control module side)
and terminal 50
PSM hydraulic unit and
.Ignition on PSMhydraulic unit
.Measure voltage betweenthe wiring harnessplug (wiring harness
following terminals: ,side)I,Iterminal
PSM control module 6
wiring harnessplug (wiring harness
side)terminal 50 Note: Check the wiring harness for
and pinching or chafing damage.
round Yes:102
102 Test: short to ground in signal Greater No:
circuit than 500 -Short circuit to ground between:
kOhm PSMcontrol module
.Ignition off wiring harnessplug (wiring harness side)
.Measure resistance betweenthe terminal 50
following terminals: and
PSM control module PSM hydraulic unit
wiring harnessplug (wiring harness wiring harness plug (wiring harness side)
side)terminal 50 terminal 6
and
Note: Check the wiring harnessfor ground
103 pinchingor chill!flg~amage.
45 -D 162IITest:jyes:ITOl
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