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 DTC's.
Cycle the ignition switch from off to on.
Cycle the Adjustable Pedals Switch forward and rearward.
With the scan tool, read DTC's.
Does the scan tool display: B1D56-ADJUSTABLE PEDAL SENSOR CIRCUIT LOW?
Yes
- Go To 2).
No
- Refer to the Adjustable Pedal System intermittent condition test. Refer to APS-INTERMITTENT CONDITION .
- 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 .
No
- Go To 3).
- 3) (G13) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT VOLTAGE Fig 1: Using Test Light To Probe Adjustable Pedals Sensor Supply Circuit (G13) At Memory Seat Module C1 Connector
Courtesy of DAIMLERCHRYSLER CORP.
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 (G13) Adjustable Pedals Sensor Supply circuit at the Memory Seat Module C1 harness connector.
Does the test light illuminate brightly?
Yes
- Repair the (G13) Adjustable Pedals Sensor Supply circuit for a short to ground.
- Perform APS VERIFICATION TEST .
No
- Go To 4).
- 4) (G13) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT SHORT TO GROUND Fig 2: Using Test Light To Probe Adjustable Pedals Sensor Supply Circuit (G13) At Memory Seat Module C1 Connector
Courtesy of DAIMLERCHRYSLER CORP.
Connect a jumper wire between the (G13) 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 (G13) 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 (G13) Adjustable Pedals Sensor Supply circuit for an open.
- Perform APS VERIFICATION TEST .
- 5) (G14) ADJUSTABLE PEDALS SENSOR SUPPLY CIRCUIT OPEN Fig 3: Using Test Light To Probe Adjustable Pedals Sensor Signal Circuit (G14) At Memory Seat Module C1 Connector
Courtesy of DAIMLERCHRYSLER CORP.
Using a 12-volt test light connected to 12-volts, probe the (G14) Adjustable Pedals Sensor Signal circuit at the Memory Seat Module C1 harness connector.
Does the test light illuminate brightly?
Yes
- Repair the (G14) Adjustable Pedals Sensor Signal circuit for a short to ground.
- Perform APS VERIFICATION TEST .
No
- Go To 6).
- 6) (G14) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT SHORT TO GROUND Fig 4: Using Test Light To Probe Adjustable Pedals Sensor Signal Circuit (G14) At Memory Seat Module C1 Connector
Courtesy of DAIMLERCHRYSLER CORP.
Connect a jumper wire between the (G14) 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 (G14) 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 (G14) Adjustable Pedals Sensor Signal circuit for an open.
- Perform APS VERIFICATION TEST .
- 7) (G13) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT FOR AN OPEN
Courtesy of DAIMLERCHRYSLER CORP.
Measure the voltage between the (G13) 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 in accordance with the Service Information.
- Perform APS VERIFICATION TEST .
- 8) (G14) ADJUSTABLE PEDALS SENSOR SIGNAL CIRCUIT VOLTAGE Fig 6: Measuring Voltage Of Adjustable Pedals Sensor Signal Circuit (G14) In Seat Memory Module C1 Connector
Courtesy of DAIMLERCHRYSLER CORP.
Reconnect Adjustable Pedal Sensor harness connector.
Turn ignition on.
Measure the voltage of the (G14) Adjustable Pedals Sensor Signal circuit in the Seat Memory Module C1 harness connector.
Is the voltage above 0.5 volts?
Yes
- Replace the Seat Memory Module in accordance with the Service Information.
- Perform APS VERIFICATION TEST .
No
- Replace the Adjustable Pedals Sensor in accordance with the Service Information.
- Perform APS VERIFICATION TEST .