Diagnostic Procedure

PEDAL SENSOR OUT OF RANGE LOW - MHSAPM/MSAPM - DIAGNOSTIC PROCEDURE

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. Operate the adjustable pedal's to both stop limits. 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 ADJUSTABLE PEDALS VERIFICATION TEST VER-1 .	All
2	Turn the ignition off. Ensure the MHSAPM is fully connected before proceeding. Disconnect the Adjustable Pedal Sensor connector. Turn ignition on. Measure the voltage of the Adjustable Pedal Sensor Feed circuit at the Adjustable Pedal Sensor connector. Is the voltage above 4.5 volts? Yes: Go To 3 No: Go To 6	All
3	Turn ignition off. Disconnect the Adjustable Pedal Sensor Connector. Disconnect the MHSAPM C1 Connector. Measure the resistance of the Adjustable Pedal Sensor Signal circuit between the Adjustable Pedal Sensor connector and the MHSAPM C1 connector. Is the resistance below 5.0 ohms? Yes: Go To 4 No: Repair the Adjustable Pedal Sensor Signal circuit for an open. Perform ADJUSTABLE PEDALS VERIFICATION TEST VER-1 .	All
4	Turn ignition off. Disconnect the MHSAPM C1 connector. Disconnect the Adjustable Pedal Sensor connector. Measure the resistance of the Adjustable Pedal Sensor Signal circuit to ground. Is the resistance below 1000 ohms? Yes: Repair the Adjustable Pedal Sensor Signal circuit for a short to ground. Perform ADJUSTABLE PEDALS VERIFICATION TEST VER-1 . No: Go To 5	All
5	Turn ignition off. Ensure the MHSAPM is fully connected before proceeding. Disconnect the Adjustable Pedal Sensor Connector. Connect a jumper wire between Adjustable Pedal Sensor Feed and Adjustable Pedal Sensor Signal circuits. Turn ignition on. With the DRBIII® select MHSAPM Sensors. Read the Adjustable Pedal Sensor voltage. Is the voltage above 4.5 volts? Yes: Replace the Adjustable Pedal Sensor in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST VER-1 . No: Replace the Memory Heated Seat Adjustable Pedal Module in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST VER-1 .	All
6	Turn ignition off. Disconnect the MHSAPM C1 connector. Disconnect the Adjustable Pedal Sensor connector. Measure the resistance of the Adjustable Pedal Sensor Feed circuit between the Adjustable Pedal Sensor connector and the MHSAPM C1 connector. Is the resistance below 5.0 ohms? Yes: Go To 7 No: Repair the Adjustable Pedal Sensor Feed circuit for an open. Perform ADJUSTABLE PEDALS VERIFICATION TEST VER-1 .	All
7	Turn ignition off. Disconnect the MHSAPM C1 connector. Measure the resistance of the Adjustable Pedal Sensor Feed circuit to body ground. Is the resistance below 100.0 ohms? Yes: Repair the Adjustable Pedal Sensor Feed circuit for a short to ground. Perform ADJUSTABLE PEDALS VERIFICATION TEST VER-1 . No: Replace the Memory Heated Seat Adjustable Pedal Module in accordance with the Service Information. Perform ADJUSTABLE PEDALS VERIFICATION TEST VER-1 .	All