Diagnostic Test

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

1) CHECK FOR DTC B1D5B-ADJUSTABLE PEDAL SWITCH CIRCUIT PERFORMANCE
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: B1D5B-ADJUSTABLE PEDAL SWITCH CIRCUIT PERFORMANCE?

Yes
1. Go To step 2).
No
1. Refer to APS-INTERMITTENT CONDITION .
2. Perform APS VERIFICATION TEST - VER 1 .
2) CHECK CONNECTOR/TERMINAL FOR DAMAGE
NOTE: Check all terminals for broken, bent, pushed out, or corroded terminals.

Turn the ignition off.

Inspect the Memory Seat Module harness connector and Lower Switch Bank harness connector.

Is the Lower Switch Bank or any of the connectors/terminals damaged?

Yes
1. Repair as necessary.
2. Perform APS VERIFICATION TEST - VER 1 .
No
1. Go To step 3).
3) CHECK ADJUSTABLE PEDALS SWITCH REARWARD CIRCUIT FOR A SHORT TO GROUND

Fig 1: Checking Adjustable Pedals Switch Rearward Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the Memory Seat Module harness connector.

Disconnect the Lower Switch Bank harness connector.

Using a 12-volt test light connected to 12-volts, probe the Adjustable Pedals Switch Rearward circuit.

Does the test light illuminate brightly?

Yes
1. Repair the Adjustable Pedals Switch Rearward circuit for a short to ground.
2. Perform APS VERIFICATION TEST - VER 1 .
No
1. Go To step 4).
4) CHECK ADJUSTABLE PEDALS SWITCH FORWARD CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking Adjustable Pedals Switch Forward Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the Memory Seat Module harness connector.

Disconnect the Lower Switch Bank harness connector.

Using a 12-volt test light connected to 12-volts, probe the Adjustable Pedals Switch Forward circuit.

Does the test light illuminate brightly?

Yes
1. Repair the Adjustable Pedals Switch Forward circuit for a short to ground.
2. Perform APS VERIFICATION TEST - VER 1 .
No
1. Go To step 5).
5) CHECK ADJUSTABLE PEDALS SWITCH REARWARD CIRCUIT AND ADJUSTABLE PEDALS SWITCH FORWARD CIRCUIT FOR A SHORT TOGETHER

Fig 3: Checking Adjustable Pedals Switch Rearward & Forward Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the Memory Seat Module harness connector.

Disconnect the Lower Switch Bank harness connector.

Measure the resistance between the Adjustable Pedals Switch Rearward circuit and Adjustable Pedals Switch Forward circuit.

Is the resistance above 5.0 ohms?

Yes
1. Go To step 6).
No
1. Repair the Adjustable Pedals Switch Rearward circuit and Adjustable Pedals Switch Forward circuit for a short together.
2. Perform APS VERIFICATION TEST - VER 1 .
6) CHECK LOWER SWITCH BANK SHORTED
Turn the ignition off.

Disconnect the Lower Switch Bank harness connector.

Measure the resistance between the Adjustable Pedals Switch Rearward and Adjustable Pedals Switch Forward terminals at the Lower Switch Bank.

Is the resistance below 5.0 ohms?

Yes
1. Replace and reprogram the Memory Seat Module in accordance with the Service Information.
2. Perform APS VERIFICATION TEST - VER 1 .
No
1. Replace the Lower Switch Bank in accordance with the Service Information.
2. Perform APS VERIFICATION TEST - VER 1 .