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Home >> Jeep >> 2019 >> Grand Cherokee Laredo, AWD, Full Time T/Case Control >> Repair and Diagnosis >> External Pages >> Different car >> Section 425 (Brake System Control Module (BSCM) - DTCS C0558-00 To P05DC-00) >> DTC Troubleshooting >> C0609-00-Park Brake Switch Circuit >> Possible Causes
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Possible Causes

WARNING: This page is about a different car, the 2021 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
ELECTRIC PARKING BRAKE (EPB) SWITCH/CONNECTOR/TERMINAL DAMAGE
EPB SWITCH POSITION 1 SIGNAL CIRCUIT SHORTED TO VOLTAGE
EPB SWITCH POSITION 2 SIGNAL CIRCUIT SHORTED TO VOLTAGE
EPB SWITCH POSITION 3 SIGNAL CIRCUIT SHORTED TO VOLTAGE
EPB SWITCH POSITION 4 SIGNAL CIRCUIT SHORTED TO VOLTAGE
EPB SWITCH POSITION 5 SIGNAL CIRCUIT SHORTED TO VOLTAGE
EPB SWITCH POSITION 6 SIGNAL CIRCUIT SHORTED TO VOLTAGE
EPB SWITCH POSITION 1 SIGNAL CIRCUIT SHORTED TO GROUND
EPB SWITCH POSITION 2 SIGNAL CIRCUIT SHORTED TO GROUND
EPB SWITCH POSITION 3 SIGNAL CIRCUIT SHORTED TO GROUND
EPB SWITCH POSITION 4 SIGNAL CIRCUIT SHORTED TO GROUND
EPB SWITCH POSITION 5 SIGNAL CIRCUIT SHORTED TO GROUND
EPB SWITCH POSITION 6 SIGNAL CIRCUIT SHORTED TO GROUND
EPB SWITCH POSITION 1 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
EPB SWITCH POSITION 2 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
EPB SWITCH POSITION 3 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
EPB SWITCH POSITION 4 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
EPB SWITCH POSITION 5 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
EPB SWITCH POSITION 6 SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
ELECTRIC PARK BRAKE SWITCH
BRAKE SYSTEM CONTROL MODULE (BSCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .