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Home >> Fiat >> 2018 >> 500 Lounge, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Electric Vehicle Control Unit (EVCU) Module - DTCS B12A4-11 To P1138-00 - 500 - Electric) >> DTC Troubleshooting >> P07B3-00-Park Switch 1 Circuit Low >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
PRND PARK LOW SIDE SWITCH (1) CIRCUIT OPEN
PRND PARK LOW SIDE SWITCH (1) CIRCUIT SHORTED TO GROUND
ePRND MODULE
ELECTRIC VEHICLE CONTROL UNIT (EVCU)
WARNING:

On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury.

Refer to HIGH-VOLTAGE POWER DOWN PROCEDURE to perform the High Voltage Power Down procedure.

Always perform the Pre-Diagnostic Troubleshooting Procedure before proceeding. Refer to  EVCU PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  . 

Typical ePRND Switch Voltages
Switch Button Not Pressed - Typical Voltage Button Not Pressed - Minimum Voltage Button Not Pressed - Maximum Voltage Button Pressed - Typical Voltage Button Pressed - Minimum Voltage Button Pressed - Maximum Voltage
Park Low Side Switch (1) 1.71 1.00 2.10 3.45 3.00 4.10
Park High Side Switch (2) 3.37 3.00 4.10 1.30 1.00 2.10
Reverse Low Side Switch (1) 1.71 1.00 2.10 3.45 3.00 4.10
Reverse High Side Switch (2) 3.37 3.00 4.10 1.30 1.00 2.10
Neutral Low Side Switch (1) 1.71 1.00 2.10 3.45 3.00 4.10
Neutral High Side Switch (2) 3.37 3.00 4.10 1.30 1.00 2.10
Drive Low Side Switch (1) 1.71 1.00 2.10 3.45 3.00 4.10
Drive High Side Switch (2) 3.37 3.00 4.10 1.30 1.00 2.10
NOTE:

Holding any button pressed longer than 10 seconds will set a DTC for button stuck.