ACTIVE HEIGHT CONTROL SUSPENSION, Diagnostic DTC:C1795

DTC Code DTC Name
C1795 Access Mode Switch Circuit (Test Mode DTC)

DESCRIPTION

According to the signal from the easy access mode switch, the suspension control ECU turns easy access mode control on/off.

DTC Code Detection Condition Trouble Area
C1795 The test mode procedure is performed.

  • Harness or connector

  • Absorber control switch (Easy access mode switch)

  • Suspension control ECU

WIRING DIAGRAM

A01EQ3IE11

INSPECTION PROCEDURE

Note


  • Before performing troubleshooting, inspect the connectors of related circuits.

  • If the suspension control ECU or height control sensor is replaced, the vehicle height offset calibration must be performed Click here.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (ACCESS MODE SWITCH)


    1. Turn the engine switch off.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the engine switch on (IG) and the intelligent tester on.

    4. Enter the following menus: Chassis / AHC / Data List.

    5. According to the display on the intelligent tester, read the Data List.

      AHC
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Access Mode Switch

      Easy access mode switch /

      ON or OFF

      ON: Easy access mode switch pushed and held

      OFF: Easy access mode switch not pushed

      		 -
      OK
      On the intelligent tester screen, item changes between ON and OFF according to switch operation.

    NG

    INSPECT ABSORBER CONTROL SWITCH (EASY ACCESS MODE SWITCH) Click here

    OK

  2. TEST MODE INSPECTION


    1. Refer to the Test Mode Procedure and perform the signal check. Check that test mode DTC C1795 is cleared Click here.

      Result
      Result Proceed to
      DTC C1795 is not cleared A
      DTC C1795 is cleared B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

    REPLACE SUSPENSION CONTROL ECU Click here

  3. INSPECT ABSORBER CONTROL SWITCH (EASY ACCESS MODE SWITCH)


    1. Remove the absorber control switch Click here.

    2. A01ESB1E03

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      6 (ECU1) - 3 (GND) Pushed and held Below 1 Ω
      Not pushed 10 kΩ or higher

    NG

    REPLACE ABSORBER CONTROL SWITCH Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - SWITCH)


    1. Disconnect the K30 ECU connector.

    2. Disconnect the E114 switch connector.

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

      A01EOCPE02
      Standard Resistance
      Tester Connection Condition Specified Condition
      K30-10 (LMSW) - E114-6 (ECU1) Always Below 1 Ω
      K30-10 (LMSW) - Body ground Always 10 kΩ or higher
      E114-3 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE SUSPENSION CONTROL ECU Click here