996 Carrera Group 0 Part 1 Diagnosis / PAGE 217
PSM diagnosis 911 Carrera 4 (996) · 8.21 Rear left inlet solenoid valve circuit
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PSM diagnosis 911 Carrera 4 (996)
8.21 Rear left inlet solenoid valve circuit
Test instruction Result Possible causes of fault
T01 voltage short in signal circuit Less than No:
0.3 V -Short circuit to voltage between:
.Ignition off PSMcontrol module
.Pull wiring harnessplug off of: wiring harnessplug (wiring harness
PSM control module side)
and terminal 53
PSM hydraulic unit and
.Ignition on PSMhydraulic unit
.Measure voltage betweenthe wiring harnessplug (wiring harness
following terminals: side)
PSM control module terminal 5
wiring harness plug (wiring harness
side)terminal 53 Note: Check the wiring harness forIpinching
and or chafing damage.
ground Yes: 102
short to ground in signal Greater No:
circuit than 500 Short circuit to ground between:
kOhm DSM control moduleIwiring
.Ignition off harness plug (wiring harness side)
.Measure resistance betweenthe {erminal 53
following terminals: and
PSM control module DSM hydraulic unit
wiring harnessplug (wiring harness wiring harness plug (wiring harness side)
side)terminal 53 {erminal 5
and
Note: Check the wiring harness for ground
Yes: 103 oinching or chafin!?:damage.
45 -D 15'-ITest:Test:IWorkTO2
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