996 Carrera Group 0 Part 1 Diagnosis / PAGE 324
Test Work instruction Result Possible causes of fault · TO4 Test: open circuit in signal circui
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911 Carrera (996) PSM diagnosis
Test Work instruction Result Possible causes of fault
TO4 Test: open circuit in signal circuit _essthan [No:-Open circuit between:
5V
I- Pull wiring harnessplug off of: PSM control module
PSM control module wiring harnessplug terminal 36
-Measure resistance between the and
following terminals: brake fluid level switch terminal 1
PSM control module
wiring harness plug terminal 36 Note: Check the wiring harness for
and pinching or chafing damage.
brake fluid level switch
terminal 1 Yes: 105
TO5 voltage short in signal circuit Lessthan No:
0.3 V -Short circuit to voltage between:
Pull wiring harness plug off of: PSM control module
instrument cluster (plug II) wiring harness plug (wiring harness
.Ignition on side)terminal 36
.Measure voltage betweenthe and
following terminals: brake fluid level switch terminal 1
PSM control module wiring harness and
plug terminal 36 instrumentcluster
and wiring harness plug (wiring harness
ground side)
iterminalll/4
Note: Check the wiring harnessforI
IYes: TOG pinchil!g~chafing damage.
45 -D 261
IITest:!.I
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