Diagnostic Procedure
DRIVER HORIZONTAL SENSOR OUT OF RANGE LOW SYMPTOM CHART
| TEST | ACTION | APPLICABILITY |
|---|---|---|
| 1 | With the DRBIII®, erase the DTC from Memory/Heated Seat Adjustable Pedal Module (MHSAPM). Operate the driver's power seat and memory system. Turn the ignition switch to the Off position then start the engine and let run for one minute. With the DRBIII check for the same DTC to reset in the MHSAPM. Did the same DTC reset? Yes --> Go To 2 No --> Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 . |
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| 2 | Ensure the MHSAPM is fully connected before proceeding. Disconnect the Driver Horizontal Seat Position Sensor connector. Turn ignition on. Measure the voltage of the Driver Seat Sensor 5 Volt Supply circuit at Driver Horizontal Seat Position Sensor connector. Is the voltage above 4.5 volts? Yes --> Go To 3 No --> Go To 7 |
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| 3 | Turn ignition off. Disconnect the Driver Horizontal Seat Position Sensor Connector. Disconnect the MHSAPM C2 Connector. Measure the resistance of the Driver Seat Horizontal Position Signal circuit between the Horizontal sensor and the MHSAPM connector. Is the resistance below 5.0 ohms? Yes --> Go To 4 No --> Repair the Driver Seat Horizontal Position Signal circuit for an open. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 . |
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| 4 | Turn ignition off. Disconnect the MHSAPM C2 connector. Disconnect the Driver Horizontal Seat Position Sensor connector. Measure the resistance of the Driver Seat Horizontal Position Signal circuit to ground. Is the resistance below 1000 ohms? Yes --> Repair the Driver Seat Horizontal Position Signal circuit a for short to ground. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 . No --> Go To 5 |
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| 5 | Turn ignition off. Ensure the MHSAPM is fully connected before proceeding. Disconnect the Driver Horizontal Seat Position Sensor Connector. Connect a jumper wire between Driver Seat Sensor 5 volt Supply and Driver Seat Horizontal Position Signal circuits. Turn ignition on. With the DRBIII® select MHSAPM Sensors. Read the Driver Seat Horizontal Sensor voltage. Is the voltage above 4.5 volts? Yes --> Replace the Seat Track Assembly. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 . No --> Go To 6 |
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| 6 | If there are no possible causes remaining, view repair. Repair Replace the Memory/Heated Seat Adjustable Pedal Module. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 . |
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| 7 | Turn ignition off. Disconnect the MHSAPM C2 connector. Measure the resistance of the Driver Seat Sensor 5 volt supply circuit to body ground. Is the resistance below 100.0 ohms? Yes --> Repair the Driver Seat Sensor 5 Volt Supply circuit for a short to ground. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 . No --> Go To 8 |
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| 8 | Turn ignition off. Disconnect the MHSAPM C2 connector. Disconnect the Driver Horizontal Seat Position Sensor connector. Measure the resistance of the Driver Seat Sensor 5 Volt Supply wire between the Horizontal Sensor connector and the C2 connector. Is the resistance below 5.0 ohms? Yes --> Go To 9 No --> Repair the Driver Seat Sensor 5 Volt Supply circuit for an open. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 . |
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| 9 | If there are no possible cause remaining, view repair. Repair Replace the Memory/Heated Seat Adjustable Pedal Module. Perform POWER SEAT SYSTEM VERIFICATION TEST - VER 1 . |
All |