Pinpoint Test B: Adjustable Brake Pedal is Inoperative/Does Not Operate Correctly - Using the Adjustable Pedal Switch (With Mem

Pinpoint Tests






Pinpoint Test B: Adjustable Brake Pedal is Inoperative/Does Not Operate Correctly - Using the Adjustable Pedal Switch (With Memory Feature)

Refer to Wiring Diagram Set 127, Adjustable Pedals for schematic and connector information. Diagrams By Number

Normal Operation

The adjustable pedal switch receives fused battery voltage from Smart Junction Box (SJB) fuse 20 (15A) along circuit SBP20 (GN/RD).

When the adjustable pedal switch is pressed in the forward position (away from the driver), the switch connects circuit SBP20 (GN/RD) with circuit CPP09 (VT/OG) and the voltage is sent to the Driver Seat Module (DSM) along circuit CPP09 (VT/OG). The DSM then sends voltage to the adjustable pedal motor along circuit CPP01 (WH/OG) and the current returns to the DSM along CPP02 (BN).

When the adjustable pedal switch is pressed in the rearward position (toward the driver), the switch connects circuit SBP20 (GN/RD) with circuit CPP10 (BN/BU) and the voltage is sent to the DSM along circuit CPP10 (BN/BU). The DSM then sends voltage to the adjustable pedal motor along circuit CPP01 (WH/OG), and the current returns to the DSM along CPP02 (BN).

- DTC B1988 (Pedal Position Forward Switch Circuit Short to Battery) - If, during normal operation or an on-demand self test, the DSM detects battery voltage on circuit CPP09 (VT/OG) for more than 2 minutes, DTC B1988 will be set.
- DTC B1989 (Pedal Position Rearward Switch Circuit Short to Battery) - If, during normal operation or an on-demand self test, the DSM detects battery voltage on circuit CPP10 (BN/BU) for more than 2 minutes, DTC B1989 will be set.

This pinpoint test is intended to diagnose the following:
- Foreign material
- Fuse
- Wiring, terminals or connectors
- Adjustable pedal switch
- Adjustable pedal motor
- Adjustable pedal cable
- Brake pedal assembly
- DSM


PINPOINT TEST B: ADJUSTABLE BRAKE PEDAL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - USING THE ADJUSTABLE PEDAL SWITCH (WITH MEMORY FEATURE)

NOTICE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.

B1-B5:

B5-B7:

B8-B12:

B12-B14:

B14-B16:

B17-B18: