PSM diagnosis 911 Carrera 4 (996) · Test Work instruction Result Possible

PSM diagnosis 911 Carrera 4 (996) Test Work instruction Result Possible causes of fault short to ground in signal Greater,than No: circuit 500 -Short circuit to ground between: kOhm PSMcontrol module I- Ignition off wiring harnessplug (wiring harness side) -Measure resistance betweenthe terminal 24 following terminals: and PSM control module PSM booster pump wiring harnessplug (wiring harness wiring harnessplug (wiring harness side) side)terminal 24 terminal 1 and ground [Note: Check the wiring harnessfor Yes: 104 pjnchingor chafingdamage. 104 Test: voltage short in signal circuit Less than 0.3 V Short circuit to voltage between: .Ignition on PSMcontrol modulewiring harnessplug .Measure voltage betweenthe (wiring harness side) terminal 22 following terminals: and PSM control module PSMbooster pump wiring harnessplug (wiring harness terminal 2 side)terminal 22 and Note: Check the wiring harness for round Yes:105 pinching or chafin!! damage. Test: short to ground in signal Greater No: circuit than 500 -Short circuit to ground between: kOhm PSMcontrol module .Ignition off wiring harness plug (wiring harness side) .Measure resistance between the terminal 22 following terminals: and iPSM control module PSM booster pump wiring harness plug (wiring harness wiring harnessplug (wiring harness side) side) terminal 22 terminal 2 and ground Note: Checkthe wiring harnessfor IYes: T06 pinchingor chafing damage. 45 -D 138IITest:1103INo:1105