996 Carrera Group 0 Part 1 Diagnosis / PAGE 193
PSM diagnosis 911 Carrera 4 (996) · 8.11 Valve relay circuit
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PSM diagnosis 911 Carrera 4 (996)
8.11 Valve relay circuit
iTest instruction Result Possible causes of fault
T01 Test: open circuit in power supply Greater No:
circuit than 11 V -Open circuit between:
Relayfor solenoid valves socket
.Ignition off terminal 4
.Pull electrical componentout of the and
socket: relay for return pump socket
Relayfor solenoid valves terminal 4
.Ignition on
.Measure voltage betweenthe
following terminals:
Relayfor solenoid valves socket
terminal 4
and
ground Yes: T02
TO2 Test: short to ground in signal Greater
circuit than 500 -Short circuit to ground between: Relay
kOhm for solenoid valves socket'terminal
.Ignition off 6
.Measure resistance betweenthe and
following terminals: PSMcontrol module
Relayfor solenoid valves socket wiring harnessplug (wiring harness side)
terminal 6 terminal 37
and
ground Note: Check the wiring harnessfor
Yes: TO3 pinchingor chafingdamage.
45 -D 130INo:!Work
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