PSM diagnosis 911 Carrera 4 (996) · 8.9 Rear right wheel-speedsensor circuit

PSM diagnosis 911 Carrera 4 (996) 8.9 Rear right wheel-speedsensor circuit Test Work instruction Result Possible causes of fault TOI Test: 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: PSM control module wiring harness plug PSM control module (wiring harness side) terminals 11, 12 .Ignition on and .Measure voltage between the rear right speed sensor following terminals: terminals 5, 4 PSM control module wiring harness plug terminal 11 Note: Disconnect plug connection and X 1/4 (terminals 18, 19) and plug ground connection X 2/4 (terminals 18, 19) for further troubleshooting. Check the wiring harness for 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!following (wiring harness side) terminals 11, 12 terminals: and PSM control module wiring harness rear right speed sensor plug (wiring harnessside) terminal 11 terminals 5, 4 and ground Note: Disconnect plug connection X 1/4 (terminals 18, 19) and plug connection X 2/4 (terminals 18, 19) for furthertroubleshooting. Check the wiring Yes: TO3 harness for pinching or chafing damage. 45 -D 126 II