B1D56

B1D56-ADJUSTABLE PEDAL SENSOR CIRCUIT LOW





^ 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.

Possible Causes
- CONNECTOR/TERMINAL DAMAGE
- (G11) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT SHORTED TO
- GROUND, OR OPEN
- (G12) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT SHORTED TO GROUND, OR OPEN
- ADJUSTABLE PEDALS SENSOR - INTERNAL FAULT
- SEAT MEMORY MODULE - INTERNAL FAULT

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.
Perform APS VERIFICATION TEST - VER 1. Verification Tests

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 - VER 1. Verification Tests
No >> Go To 3

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





Turn the ignition off. 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.
Does the test light illuminate brightly?
Yes >> Repair the (G11) Adjustable Pedals Sensor Supply circuit for a short to ground.
Perform APS VERIFICATION TEST - VER 1. Verification Tests
No >> Go To 4

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





Turn the ignition off.
Disconnect the Seat Memory Module harness connector.
Disconnect the Adjustable Pedals Sensor harness connector.
Connect a jumper wire between the (G11) Adjustable Pedals Sensor
Supply circuit and ground.
Using a 12-volt test light connected to 12-volts, probe the (G11) Adjustable Pedals Sensor Supply circuit.
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 - VER 1. Verification Tests

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





Turn the ignition off.
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 (G12) Adjustable Pedals Sensor Signal circuit.
Does the test light illuminate brightly?
Yes >> Repair the (G12) Adjustable Pedals Sensor Signal circuit for a short to ground.
Perform APS VERIFICATION TEST - VER 1. Verification Tests
No >> Go To 6

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





Turn the ignition off.
Disconnect the Seat Memory Module harness connector.
Disconnect the Adjustable Pedals Sensor harness connector.
Connect a jumper wire between the (G12) Adjustable Pedals Sensor
Signal circuit and ground.
Using a 12-volt test light connected to 12-volts, probe the (G12) Adjustable Pedals Sensor Signal circuit.
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 - VER 1. Verification Tests

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





Turn the ignition off.
Disconnect the Adjustable Pedals Sensor harness connector.
Measure the voltage between the (G11) Adjustable Pedals Sensor Supply circuit and ground.
Is the voltage between 4.0 and 5.0 volts?
Yes >> Go To 8
No >> Replace and reprogram the Seat Memory Module in accordance with the Service Information.
Perform APS VERIFICATION TEST - VER 1. Verification Tests

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





Turn the ignition off.
Reconnect all connectors.
Measure the voltage of the (G12) Adjustable Pedals Sensor Signal circuit in the Seat Memory Module harness connector.
Is the voltage above 0.5 volts?
Yes >> Replace and reprogram the Seat Memory Module in accordance with the Service Information.
Perform APS VERIFICATION TEST - VER 1. Verification Tests
No >> Replace the Adjustable Pedals Sensor in accordance with the Service Information.
Perform APS VERIFICATION TEST - VER 1. Verification Tests