Pinpoint Test G531320p12: Primary Release Switch Circuit Short Circuit to Ground

PINPOINT TEST G531320p12: PRIMARY RELEASE SWITCH CIRCUIT SHORT CIRCUIT TO GROUND

G531320t47: CHECK THE PRIMARY RELEASE SIGNAL CIRCUIT FOR SHORT TO GROUND
1. Key off.





2. Electric parking brake module connector 1 (CR50) disconnected.
3. Key on, engine off.
4. Measure the resistance between:





^ Is the resistance greater than 100 Kohms?

-> Yes An intermittent fault may be present in the wiring harness. Visually check for chaffed wires or other physical damage to the harness. If no fault is found in the circuit, suspect the following component(s): - EPB module - EPB module connector, CR50

-> No GO to Pinpoint Test G531320t48.

G531320t48: CHECK IF THE SHORT CIRCUIT IS IN THE HARNESS OR THE SWITCH
1. Electric parking brake switch (TL82) connector disconnected.





2. Measure the resistance between:





^ Is the resistance greater than 100 Kohms?

-> Yes INSTALL a new EPB switch.

-> No REPAIR the short circuit. For additional information, refer to Vehicle/Diagrams.