996 Carrera Group 0 Part 1 Diagnosis / PAGE 321
I Test Work instruction Result Possible causes of fault · ITO3I Test: short to ground in sign
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I Test Work instruction Result Possible causes of fault
ITO3I Test: short to ground in signal Greater No:
circuit than 500 -Short circuit to ground between:
kOhm PSM control module
.Ignition off wiring harnessplug (wiring harness side)
.Measure resistance between the terminal 4
following terminals: and
PSM control module wiring harness PSM booster pump
plug (wiring harness side) terminal 4 wiring harness plug (wiring harness side)
and terminal 1
ground
Note: Check the wiring harness for
es: 104 pinching~LChafing damage.
TO4 Test: voltage short in signal circuit Lessthan No:
0.3 V -Short circuit to voltage between:
.Ignition on PSM control module wiring harness plug
.Measure voltage between the (wiring harness side) terminal 3
following terminals: landI
PSM control module PSM booster pump
wiring harness plug (wiring harness Iterminal2
side) terminal 3
and Note: Check the wiring harness for
ground Yes: 105 pinchingor chafing damage.
105 Test: short to ground in signal circuit Greater No:
than500 -Short circuit to ground between:
.Ignition off kOhm PSMcontrol module
.Measure resistance between the wiring harness plug (wiring harness side)
following terminals: terminal 3
PSM control module wiring harness and
plug (wiring harness side) terminal 3 PSM booster pump
and wiring harness plug (wiring harness side)
ground terminal 2
Note: Check the wiring harness for
Yes: TO6 pinchingor chafLngga!!)_ag~
45 -D 258
I~
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