996 Carrera Group 0 Part 1 Diagnosis / PAGE 304
Test Work instruction Result Possible causes of fault · ITO3 Test: short to ground/
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911 Carrera (996) PSM diagnosis
Test Work instruction Result Possible causes of fault
ITO3 Test: short to ground/ Greater,than No:
open circuit in signal circuit 11 V -Short circuit to ground or open circuit
between:
.Brake pedal actuated PSM control module
.Measure voltage betweenthe wiring harness plug (wiring harness side)
following terminals: terminal 32
PSM control module and
wiring harness plug (wiring harness stop light switch
side) terminal 32 terminal 2
and or
ground -Stop light switch faulty
Note: The jumper plug 6/2 is located in
the wiring harness. Check the wiring
Yes:104 har~.for pinching or chafing damage.
TO4 Test: voltage short in signal circuit Lessthan No:
0.3 V -Short circuit to voltage between:
.Brake pedal not actuated PSM control module wiring harness plugI
.Measure voltage betweenthe (wiring harness side) terminal 32
following terminals: and
PSM control module stop light switch terminal 2
wiring harness plug (wiring harness or
side) terminal 32 -Stop light switch faulty
and
ground Note: The jumper plug 6/2 is located in
the wiring harness. Check the wiring
harness for pinching or chafing damage.
I EOl 11-PSMcontrolmodulefaulty I
45 -D 241
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