996 Carrera Group 0 Part 1 Diagnosis / PAGE 213
PSM diagnosis 911 Carrera 4 (996) · 8.19 Rear right inlet solenoid valve circuit
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PSM diagnosis 911 Carrera 4 (996)
8.19 Rear right inlet solenoid valve circuit
Test Work instruction Result Possible causes of fault
TOl Test: voltage short in signal circuit Less than No:
0.3 V -Short circuit to voltage between:
.Ignition off PSM control module
.Pull wiring harness plug off of: wiring harness plug (wiring harness
PSM control module side)
and terminal 6
PSM hydraulic unit and
.Ignition on PSM hydraulic unit
.Measure voltage betweenthe wiring harness plug (wiring harness
following terminals: 'side)
PSM control module terminal 3
wiring harnessplug (wiring harness
side) terminal 6 Note: Check the wiring harness for
and pinching or chafing damage.
!ground i Yes: 102
102 Test: short to ground in signal Greater No:
circuit than 500 -Short circuit to ground between:
kOhm PSM control module
.Ignition off wiring harness plug (wiring harness side)
.Measure resistance betweenthe terminal 6
following terminals: and
PSM control module PSM hydraulic unit
wiring harness plug (wiring harness wiring harness plug (wiring harness side)
side)terminal 6 terminal 3
and
ground Note: Check the wiring harnessfor
~Yes:TO3 pinchingor chafing damage.
45 -D 150
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