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Home >> Lincoln >> 2019 >> Nautilus Base, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Four-Wheel Drive Systems) >> Diagnosis And Testing >> Four-Wheel Drive Systems >> Pinpoint Tests >> Pinpoint Test B : DTCS C0091:17, C0091:32, C0091:33, C0091:38, C0091:92 And C00A2:1C >> Notes

Pinpoint Test B : DTCS C0091:17, C0091:32, C0091:33, C0091:38, C0091:92 And C00A2:1C: Notes

WARNING: This page is about a different variant/trim than selected.

Refer to All Wheel Drive (AWD) for schematic and connector information.

Normal Operation and Fault Conditions 

Two position sensors are located within the PTU motor assembly - one for the cam and one for the shift fork. Both sensors are hall effect type and share power and ground.

DTC Fault Trigger Conditions 

DTC Description Fault Trigger Conditions
C0091:17 4WD/AWD Power Transfer Unit Position Sensor "A" Circuit Voltage Above Threshold PTU cam position signal voltage above threshold.
C0091:32 4WD/AWD Power Transfer Unit Position Sensor "A" Signal Low Time < Minimum PTU Cam position sensor signal out of range. PTU Cam position sensor signal < 3% DC.
C0091:33 4WD/AWD Power Transfer Unit Position Sensor "A" Signal Low Time > Maximum PTU Cam position sensor signal out of range. PTU Cam position sensor signal > 90% DC.
C0091:38 4WD/AWD Power Transfer Unit Position Sensor "A" Signal Frequency Incorrect PTU Cam position sensor frequency out of range. PTU Cam position sensor frequency out of range 1kHz +/- 150Hz.
C0091:92 4WD/AWD Power Transfer Unit Position Sensor "A" Performance of Incorrect Operation Actuator Fork Position Out of Range. While the system state is connected/ disconnected, detects a change in cam sensor from valid positions in each state.
C00A2:1C Driveline Control Module Power Transfer Unit Control circuit driver: Circuit Voltage Out of Range The AWD Module detected Reference voltage outside of 4.7v-5.29v. (AWD Connector pin 25).

Possible Sources