996 Carrera Group 0 Part 1 Diagnosis / PAGE 196
8.12 Return pump relay circuit · Test Work instruction Result Possible causes of fault
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911 Carrera 4 (996) PSM diagnosis
8.12 Return pump relay circuit
Test Work instruction Result Possible causes of fault
TOI Test: open circuit in power supply IGreater No:
circuit than 11 V -Open circuit between:
Relayfor return pump socket terminal 4
.Ignition off and
.Pull electrical component out of the PSMcontrol module
socket: wiring harness plug (wiring harness
Relay for return pump side)terminal 2
.Ignition on
.Measure voltage between the
following terminals:
Relay for return pump socket terminal 4
and
ground , Yes: T02
Test: short to ground in signal Greater No:
circuit than 500 -Short circuit to ground between:I
kOhm Relay for return pump socket
.Ignition off terminal 6
.Measure resistance betweenthe 'and;
following terminals: PSM control moduleIwiring
Relayfor return pump socket terminal 6 harness plug (wiring harness side)iterminal
and 7
ground
Note: Checkthe wiring harnessfor
IYes: 103 pinchi~gor chafing_damage.
45 -D 133
!TO2
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