C1288

PINPOINT TEST G92304p7: C1288; BRAKE PRESSURE SENSOR CIRCUIT FAULT

G92304t12: CHECK THE POWER SUPPLY TO THE BRAKE PRESSURE SENSOR

1. Turn the ignition switch to the OFF position.
2. Disconnect the brake pressure sensor electrical connector, JB89.
3. Turn the ignition switch to the ON position.
4. Measure the voltage between JB89, pin 03 (G13) and GROUND.
^ Is the voltage less than 4.5 volts?

-> Yes
GO to Pinpoint Test G92304t17.

-> No
GO to Pinpoint Test G92304t39.

G92304t17: CHECK THE BRAKE PRESSURE SENSOR POWER SUPPLY CIRCUIT FOR HIGH RESISTANCE

1. Turn the ignition switch to the OFF position.
2. Disconnect the DSC module electrical connector, JB185.
3. Measure the resistance between JB89, pin 03 (G13) and JB185, pin 42 (G13).
^ Is the resistance greater than 5 ohms?

-> Yes
REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams, test the system for normal operation.

-> No
REPAIR the circuit between the brake pressure sensor and battery. This circuit includes the primary distribution box (fuse 96), the ignition switch and the DSC control module. For additional information, refer to the wiring diagrams.

G92304t39: CHECK THE GROUND TO THE BRAKE PRESSURE SENSOR

1. Turn the ignition switch to the OFF position.
2. Measure the resistance between JB89, pin 01 (B). and GROUND.
^ Is the resistance greater than 5 ohms?

-> Yes
GO to Pinpoint Test G92304t40.

-> No
GO to Pinpoint Test G92304t41.

G92304t40: CHECK THE BRAKE PRESSURE SENSOR GROUND CIRCUIT FOR HIGH RESISTANCE

1. Disconnect the DSC module electrical connector, JB185.
2. Measure the resistance between JB89, pin 01 (B). and JB185, pin 25 (B).
^ Is the resistance greater than 5 ohms?

-> Yes
REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams, test the system for normal operation.

-> No
Please check part is not on any form of prior authorization before replacement.

G92304t41 : CHECK THE BRAKE PRESSURE SENSOR CIRCUIT FOR HIGH RESISTANCE

1. Disconnect the DSC module electrical connector, JB185.
2. Measure the resistance between JB89,. pin 02 (WG) and JB185, pin 26 (WG).
^ Is the resistance greater than 5 ohms?

-> Yes
REPAIR the high resistance circuit. For additional information, refer to the wiring diagrams, test the system for normal operation.

-> No
Check the brake light switch circuit. Please check part is not on any form of prior authorization before replacement.