PSM diagnosis 911 Carrera (996) · 8.4 Tiptronic CAN bus communication circuit

PSM diagnosis 911 Carrera (996) 8.4 Tiptronic CAN bus communication circuit Test Work instruction Result Possible causes of fault TOl Test: voltage short in signal circuit Less than No: 0.3 V -Short circuit to voltage between: .Ignition off Tiptronic control module wiring harness .Pull wiring harness plug off of: olugI Tiptronic control module (wiring harnessside) terminals 85, 86 and and DME control module DMEcontrol module wiring harnessplug .Ignition on .Measure voltage between the wiring harness side) terminals3, 4 following terminals: Tiptronic control module wiring harness plug (wiring harness side) terminals 85, 86 and ground I Yes: T02 102 Test: short to ground in signal Greater No: circuit than 500 -Short circuit to ground between: kOhm Tiptronic control module wiring harness .Ignition off plug .Measure resistance between the (wiring harness side) terminals85, 86 following terminals: and Tiptronic control module DMEcontrol module wiring harness plug wiring harness plug (wiring harness side) (wiring harnessside) terminals 3, 4 ter,minals85, 86 and ~round Yes: 103 45 -D 238