ACTIVE STABILIZER SUSPENSION SYSTEM, Diagnostic DTC:C1959

DTC Code DTC Name
C1959 IG Power Supply Voltage in Front ECU

DESCRIPTION

When an abnormal IG power supply voltage of the front active stabilizer control ECU is detected, DTC C1959 is output.

DTC No. DTC Detection Condition Trouble Area
C1959 IG voltage of front active stabilizer control ECU is 17 V or more for 1 minute

  • IG power source circuit

  • Front active stabilizer control ECU

WIRING DIAGRAM

A01NFP4E04

INSPECTION PROCEDURE

Tech Tips

Inspect each fuse in the circuit before troubleshooting.

PROCEDURE


  1. CHECK CONNECTOR CONNECTION CONDITION


    1. Turn the power switch off.

    2. Check that the connectors of the front active stabilizer control ECU are not loose or disconnected.

      OK
      Connectors are not loose or disconnected.

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (IG VOLTAGE)


    1. Turn the power switch off.

    2. Disconnect the g13 ECU connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      g13-9 (IG) - g13-5 (PGND) Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ACTIVE STABILIZER CONTROL ECU ASSEMBLY Click here