Inspection Procedure

HINT:

• Check the condition of each related circuit connector before troubleshooting (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
• When C1774 is output, inspect and repair the trouble areas indicated by C1774 first (See DTC C1774 LOW BATTERY POSITIVE VOLTAGE ).

1. READ VALUE OF INTELLIGENT TESTER 
   1. Connect the intelligent tester to DLC3.
   2. Turn the engine switch on (IG) and turn the intelligent tester main switch on.
   3. Select "DATA LIST" mode on the intelligent tester (See DATA LIST / ACTIVE TEST ).

      DATA LIST (EMS): 

      DATA LIST REFERENCE
      
      

      Item	Measurement Item/Range (Display)	Normal Condition	Diagnostic Note
      DAMPER SW1	Damper force switch 1/ON or OFF	The same as absorber control switch position	Operate the absorber control switch

   4. Operate the absorber control switch and check its operation in the DATA LIST on the intelligent tester display.

      OK: 

      The display on the intelligent tester changes according to the operation of the absorber control switch. 

   NG: Go to step   3 

   OK: Go to next step 

2. RECONFIRM DTC 
   1. Clear the DTC (See DTC CHECK / CLEAR ).
   2. Perform the Test Mode (See TEST MODE PROCEDURE ).
   3. Check if the same DTC is recorded (See DTC CHECK / CLEAR ).

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   DTC is output	A
   DTC is not output (When troubleshooting accordance with the PROBLEM SYMPTOMS TABLE)	B
   DTC is not output	C

   B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

   C: END 

   A: REPLACE ABSORBER CONTROL ECU 

3. INSPECT ABSORBER CONTROL SWITCH 
   1. Remove the absorber control switch.
   2. Disconnect the absorber control switch connector.
   3. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE REFERENCE CHART
      
      

      Tester Connection	Switch Position	Specified Condition
      Switch terminal 4 - Switch terminal 3	NORM	10 kΩ or higher (No Continuity)
      Switch terminal 4 - Switch terminal 3	SPORT	Below 1 Ω (Continuity)

   Fig 1: Identifying Absorber Control Switch Connector Terminal

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE ABSORBER CONTROL SWITCH 

   OK: Go to next step 

4. CHECK HARNESS AND CONNECTOR (ABSORBER CONTROL SWITCH TO ABSORBER CONTROL ECU, BODY GROUND) 
   1. Disconnect the absorber control ECU connector.
   2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE REFERENCE CHART
      
      

      Tester Connection	Specified Condition
      K72-9 (SW1) - K41-4	Below 1 Ω
      K72-9 (SW1) - Body ground	10 kΩ or higher

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

      Resistance 

      RESISTANCE REFERENCE CHART
      
      

      Tester Connection	Specified Condition
      K41-3 - Body ground	Below 1 Ω

   Fig 2: Checking Harness And Connector (Absorber Control Switch To Absorber Control ECU, Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: Go to next step 

5. RECONFIRM DTC 
   1. Clear the DTC (See DTC CHECK / CLEAR ).
   2. Perform Test Mode (See TEST MODE PROCEDURE ).
   3. Check if the same DTC is recorded (See DTC CHECK / CLEAR ).

      HINT:

      Reinstall the sensor, connectors, etc. and restore the vehicle to its prior condition before rechecking for DTCs.

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   DTC is output	A
   DTC is not output (When troubleshooting accordance with the PROBLEM SYMPTOMS TABLE)	B
   DTC is not output	C

   B: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

   C: END 

   A: REPLACE ABSORBER CONTROL ECU