996 Carrera Group 0 Part 1 Diagnosis / PAGE 336
Test Work instruction Result Possible causes of fault · TO3 Test: voltage short in signal circuit
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911 Carrera (996) PSM diagnosis
Test Work instruction Result Possible causes of fault
TO3 Test: voltage short in signal circuit ILess than No:
0.3 V -Short circuit to voltage between:
.Measure voltage betweenthe booster pump pressure sensor
following terminals: wiring harness plug (wiring harness side)
booster pump pressure sensor terminal 2
wiring harness plug (wiring harness and
side) PSMcontrol module
terminal 2 wiring harnessplug (wiring harness side)
and terminal 26
ground
Note: Check the wiring harnessfor
es: 104 oinching or chafine:damae:e.
104 short to ground in signal Less than No:
circuit 5 Ohm -Short circuit to ground between:
booster pump pressure sensor
.Ignition off wiring harnessplug (wiring harness side)
.Measure resistance between the terminal 2
following terminals: and
booster pump pressure sensor PSM control module
wiring harness plug (wiring harness wiring harnessplug (wiring harness side)
side) terminal 26
terminal 2
and Note: Check the wiring harness forII
IYes:TO5 pinching or chafing damage.
45 -D 273
ITest:~
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