Test C: Adjustable Brake Pedal Does Not Operate Correctly - Using the Adjustable Pedal Switch (System With Memory Feature)
Pinpoint Test C: Adjustable Brake Pedal Does Not Operate Correctly - Using the Adjustable Pedal Switch (System with Memory Feature)Refer to Vehicle/Diagrams, Adjustable Pedals for schematic and connector information.
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 CPP10 (BN/BU) and the voltage is sent to the driver seat module (DSM) along circuit CPP10 (BN/BU). The voltage returns to the switch along circuit CPP09 (VT/OG) and is grounded through the switch along circuit GD115 (BK/GY). The DSM then sends voltage to the adjustable pedal motor along circuit CPP01 (WH/OG), the voltage 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 CPP09 (VT/OG) and the voltage is sent to the DSM along circuit CPP09 (VT/OG). The voltage returns to the switch along circuit CPP10 (BN/BU) and is grounded through the switch along circuit GD 115 (BK/GY). The DSM then sends voltage to the adjustable pedal motor along circuit CPP02 (BN), the voltage returns to the DSM along CPP01 (WH/OG).
^ 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 CPP10 (BN/BU) 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 CPP09 (VT/OG) for more than 2 minutes DTC B1989 will be set.
This pinpoint test is intended to diagnose the following:
^ Fuse
^ Wiring, terminals or connectors
^ Adjustable pedal switch
^ DSM