LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 400 (Electronic Modulated Suspension - Diagnosis) >> DTC C1787/87: Absorber Control Switch Circuit >> Inspection Procedure

Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

HINT: Start the inspection from the step 1 in case of using hand-held tester and start from step  2 in case of not using hand-held tester.

  1. READ VALUE OF HAND-HELD TESTER 
    1. Connect the hand-held tester to the DLC3.
    2. Turn the ignition switch ON and turn the hand-held tester main switch ON.
    3. Select the item "DAMPER SW1 (SW2)" in the DATA LIST and read its value displayed on the hand-held tester.
    4. Check that the acceleration value of the acceleration sensor observed in the hand-held tester is changing when the vehicle is bounced.

      OK: 

      Absorber control switch value must be changing. 

  2. INSPECT ABSORBER CONTROL SWITCH 
    1. Disconnect the absorber control switch.
    2. Check the continuity between each terminal of the absorber control switch at each switch position.
      Fig 1: Checking Continuity Between Each Terminals Of Absorber Control Switch
      G01438757Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: 

      Fig 2: Absorber Control Switch "Sport" Position Chart
      G01438753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 3: Absorber Control Switch "Semi-Sport" Position Chart
      G01438754Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Absorber Control Switch "Semi-Comfort" Position Chart
      G01438755Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 5: Absorber Control Switch "Comfort" Position Chart
      G01438756Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    • NG: REPLACE ABSORBER CONTROL SWITCH 
    • OK: GO TO NEXT STEP. 
  3. CHECK HARNESS AND CONNECTOR (ABSORBER CONTROL SWITCH - ABSORBER CONTROL ECU) 
    1. Check for open and short circuit in harness and connector between absorber control switch and absorber control ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).