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B1D67






B1D67-00-ADJUSTABLE PEDAL CONTROL CIRCUIT PERFORMANCE

For a complete wiring diagram, refer to the Wiring Information.





Theory of Operation

The Memory System is made up of the Memory Seat Module-Driver (MSMD), Memory Switch, Driver Seat Switch, Adjustable Pedal Switch, and multiple Seat Motors and an Adjustable Pedal Motor. The motors each contain a hall-effect position sensor. The hall-effect position sensor provides feedback to the MSMD in relation to the motors position.

The Driver Seat Switch is a Multiplex (Mux) switch which uses set resistance levels for each switch position. These resistances correspond to different voltages which is monitored by the MSMD over two separate circuits. When a voltage change is detected, the MSMD will command the appropriate Seat motor(s) to move the seat in the requested direction as long as the Driver Seat Switch is held in that direction or its stops have been reached.

The Adjustable Pedal Switch is a three position switch (forward, center, rearward). The MSMD monitors the forward and rearward circuits voltage. If a voltage change is detected, the MSMD will command the Adjustable Pedal motor to move the pedals in the requested direction as long as the Adjustable Pedal Switch is held in that direction or its stops have been reached.

The Memory Switch is a Mux switch that is used to set and recall the seat and pedal positions. When a Memory Switch button is pressed, the Driver Door Module (DDM) detects a voltage change and sends a request over the Controller Area Network (CAN) bus circuit to the MSMD to perform the requested command. If the SET button on the Memory Switch is pressed, followed by the 1 or 2 button, the MSMD will store the seat and pedal positions based on the position inputs received from the hall-effect position sensors. If the 1 or 2 button on the Memory Switch is pressed, the MSMD will recall the stored seat and pedal positions for that particular selection and return the seat and pedals to the stored positions. Memory position may also be recalled using a linked FOBIK transmitter. For driver safety, the MSMD will prevent the memory recall function from being initiated if the transmission gear selector lever is not in the Park position or if the vehicle is moving. For further information Memory Seat Module - Operation.

- When Monitored:
The Adjustable Pedals Motor is in active operation.

- Set Condition:
The Memory Seat Module-Driver (MSMD) detects that the Adjustable Pedals Motor has been activated for two seconds, but has not spun.





Diagnostic Test

1. CHECK IF DTC IS ACTIVE
1. Turn the ignition on.
2. With the scan tool, record and erase Memory Seat Module-Driver (MSMD) DTCs.
3. Cycle the ignition switch from off to on.
4. Cycle and hold the Adjustable Pedals Switch forward, rearward, and forward at two second intervals.
5. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- Perform the APS INTERMITTENT CONDITION TEST. Testing and Inspection.

2. CHECK CONNECTOR/TERMINAL FOR DAMAGE

NOTE: Check all terminals for broken, bent, pushed out, or corroded terminals.

1. Turn the ignition off to the lock position.
2. Inspect the Memory Seat Module harness connector, Adjustable Pedals Motor, and Adjustable Pedals Motor harness connector.

Is the Adjustable Pedals Motor or any of the connectors/terminals damaged?

Yes

- Repair as necessary.
- Perform the APS VERIFICATION TEST. Verification Tests.

No

- Go To 3

3. CHECK THE ADJUSTABLE PEDALS ASSEMBLY FOR MECHANICAL DAMAGE
1. Inspect the Adjustable Pedals Assembly for any physical damage.

NOTE: Check for any conditions that would cause the motor to stall or be stuck.

Is the Adjustable Pedals Assembly damaged?

Yes

- Repair or replace the Adjustable Pedals Assembly.
- Perform the APS VERIFICATION TEST. Verification Tests.

No

- Go To 4

4. CHECK THE (P205) ADJUSTABLE PEDALS MOTOR FORWARD CIRCUIT FOR AN OPEN
1. Disconnect the Memory Seat Module C1 harness connector.
2. Disconnect the Adjustable Pedals Motor harness connector.
3. Measure the resistance of the (P205) Adjustable Pedals Motor Forward circuit between the Memory Seat Module C1 harness connector and the Adjustable Pedals Motor harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 5

No

- Repair the (P205) Adjustable Pedals Motor Forward circuit for an open.
- Perform the APS VERIFICATION TEST. Verification Tests.

5. CHECK THE (P206) ADJUSTABLE PEDALS MOTOR REARWARD CIRCUIT FOR AN OPEN
1. Measure the resistance of the (P206) Adjustable Pedals Motor Rearward circuit between the Memory Seat Module C1 harness connector and the Adjustable Pedals Motor harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 6

No

- Repair the (P206) Adjustable Pedals Motor Rearward circuit for an open.
- Perform the APS VERIFICATION TEST. Verification Tests.

6. CHECK THE (G914) SENSOR GROUND CIRCUIT FOR AN OPEN
1. Measure the resistance of the (G914) Sensor Ground circuit between the Memory Seat Module C1 harness connector and the Adjustable Pedals Sensor harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Go To 7

No

- Repair the (G914) Sensor Ground circuit for an open.
- Perform the APS VERIFICATION TEST. Verification Tests.

7. CHECK ADJUSTABLE PEDALS MOTOR
1. Reconnect the Adjustable Pedals Sensor harness connector.
2. Measure the resistance between the (P205) Adjustable Pedals Motor Forward and (P206) Adjustable Pedals Motor Rearward terminals at the Adjustable Pedals Motor component connector.

Is the resistance below 100.0 Ohms?

Yes

- Replace and program the Memory Seat Module (MSMD). Memory Seat Module - Removal.
- Perform the APS VERIFICATION TEST. Verification Tests.

No

- Replace the Adjustable Pedals Motor. Removal.
- Perform the APS VERIFICATION TEST. Verification Tests.

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