996 Carrera Group 0 Part 1 Diagnosis / PAGE 186
8.8 Rear left wheel-speedsensor circuit · Test Work instruction Result Possible causes of fault
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911 Carrera 4 (996) PSM diagnosis
8.8 Rear left wheel-speedsensor circuit
Test Work instruction Result Possible causes of fault
TOI voltage short in signal circuit Less than No:
0.3 V -Short circuit to voltage in the circuit
.Ignition off between:
.Pull wiring harness plug off of: PSMcontrol module wiring harness plug
PSM control module (wiring harness side) terminals 13, 14
.Ignition on and
.Measure voltage betweenthe rear left speed sensor
following terminals: terminals 5, 4
PSM control module wiring harness
plug terminal 13 Note: Disconnectplug connection
and X 1/4 (terminals 20, 21) and plug
ground connectionX 2/4 (terminals16, 17) for
further troubleshooting.
Check the wiring harnessfor pinching or
Yes:102 chafing damage.
TO2 Test: short to ground in signal Greater No:
circuit than 500 -Short circuit to ground in the circuit
kOhm between:
.Ignition off PSM control module wiring harness plug
.Measure resistance betweenthe (wiring harness side) terminals 13, 14
following terminals: and
PSM control module wiring harness rear left speed sensor
plug (wiring harness side)terminal 13 terminals 5, 4
and,ground
Disconnectplug connection X 1/4I(terminals
20, 21) and plug connection
IX 2/4 (terminals 16, 17) for further
troubleshooting.Check the wiring
IYes:103 iharnessfor pinchingor chafing damage.
45 -D 123
ITest:!Note:
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