B1D56

B1D56-ADJUSTABLE PEDAL SENSOR CIRCUIT LOW





For a complete wiring diagram Consult Diagrams/Electrical.

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

- Set Condition:
The Seat Memory Module detects a low signal circuit voltage that is not within voltage specification from the Adjustable Pedal Sensor.





Diagnostic Test

1. CHECK FOR DTC B1D56-ADJUSTABLE PEDAL SENSOR CIRCUIT LOW
NOTE: This DTC must be active for the results of this test to be valid.

Turn the ignition on.
With the scan tool, record and erase DTCs.
Cycle the ignition switch from off to on.
Cycle the Adjustable Pedals Switch forward and rearward.
With the scan tool, read DTCs.
Does the scan tool display: B1D56-ADJUSTABLE PEDAL SENSOR CIRCUIT LOW?

Yes

- Go To 2

No

- Refer to the INTERMITTENT CONDITION diagnostic procedure. Checking For An Intermittent DTC.
- PERFORM APS VERIFICATION TEST. APS Verification Test

2. CHECK CONNECTOR/TERMINAL FOR DAMAGE

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

Turn the ignition off.
Inspect the Seat Memory Module harness connector, Adjustable Pedals Sensor, and Adjustable Pedals Sensor harness connector.
Is the Adjustable Pedals Sensor or any of the connectors/terminals damaged?

Yes

- Repair as necessary.
- PERFORM APS VERIFICATION TEST. APS Verification Test

No

- Go To 3

3. CHECK (G11) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT FOR A SHORT TO GROUND




Disconnect the Seat Memory Module harness connector.
Disconnect the Adjustable Pedals Sensor harness connector.
Using a 12-volt test light connected to 12-volts, probe the (G11) Adjustable Pedals Sensor Supply circuit at the Memory Seat Module C1 harness connector.
Does the test light illuminate brightly?

Yes

- Repair the (G11) Adjustable Pedals Sensor Supply circuit for a short to ground.
- PERFORM APS VERIFICATION TEST. APS Verification Test

No

- Go To 4

4. CHECK (G11) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT FOR AN OPEN




Connect a jumper wire between the (G11) Adjustable Pedals Sensor Supply circuit and ground at the Adjustable Pedal Sensor harness connector.
Using a 12-volt test light connected to 12-volts, probe the (G11) Adjustable Pedals Sensor Supply circuit at the Memory Seat Module C1 harness connector.
Does the test light illuminate brightly

Yes

- Go To 5

No

- Repair the (G11) Adjustable Pedals Sensor Supply circuit for an open.
- PERFORM APS VERIFICATION TEST. APS Verification Test

5. CHECK (G12) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT FOR A SHORT TO GROUND




Using a 12-volt test light connected to 12-volts, probe the (G12) Adjustable Pedals Sensor Signal circuit at the Memory Seat Module C1 harness connector.
Does the test light illuminate brightly?

Yes

- Repair the (G12) Adjustable Pedals Sensor Signal circuit for a short to ground.
- PERFORM APS VERIFICATION TEST. APS Verification Test

No

- Go To 6

6. CHECK (G12) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT FOR AN OPEN




Connect a jumper wire between the (G12) Adjustable Pedals Sensor Signal circuit and ground at the Adjustable Pedal Sensor harness connector.
Using a 12-volt test light connected to 12-volts, probe the (G12) Adjustable Pedals Sensor Signal circuit at the Memory Seat Module C1 harness connector.
Does the test light illuminate brightly?

Yes

- Go To 7

No

- Repair the (G12) Adjustable Pedals Sensor Signal circuit for an open.
- PERFORM APS VERIFICATION TEST. APS Verification Test

7. CHECK (G11) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT VOLTAGE




Measure the voltage between the (G11) Adjustable Pedals Sensor Supply circuit and ground at the Adjustable Pedal Sensor harness connector.
Is the voltage between 4.0 and 5.0 volts?

Yes

- Go To 8

No

- Replace and reprogram the Seat Memory Module.
- PERFORM APS VERIFICATION TEST. APS Verification Test

8. CHECK (G12) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT VOLTAGE




Reconnect Adjustable Pedal Sensor harness connector.
Turn ignition on.
Measure the voltage of the (G12) Adjustable Pedals Sensor Signal circuit in the Seat Memory Module C1 harness connector.
Is the voltage above 0.5 volts?

Yes

- Replace and reprogram the Seat Memory Module.
- PERFORM APS VERIFICATION TEST. APS Verification Test

No

- Replace the Adjustable Pedals Sensor.
- PERFORM APS VERIFICATION TEST. APS Verification Test