Inspection Procedure

HINT:

When using the intelligent tester, start from  1. When not using the intelligent tester, start from  2.

1. READ VALUE OF INTELLIGENT TESTER (DAMPING MODE SELECT SWITCH) 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch ON and push the intelligent tester main switch ON.
   3. Select the DATA LIST mode on the intelligent tester.
   4. Check the damping mode select switch condition displayed on the intelligent tester when changing the damping mode select switch to each mode.

      OK: 

      Damping mode select switch must display the condition as  TESTER CONNECTION SPECIFIED CONDITION   . 

      Fig 1: Identifying Different Modes Of Damping Mode Select Switch

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Switch Position	Condition
      COMFORT	ON is displayed for TSW1 of damping mode select switch condition. OFF is displayed for TSW2 of damping mode select switch condition.
      NORMAL	ON is displayed for TSW1 and TSW2 of damping mode select switch condition.
      SPORT 1	OFF is displayed for TSW1 of damping mode select switch condition. ON is displayed for TSW2 of damping mode select switch condition.
      SPORT 2	OFF is displayed for TSW1 and TSW2 of damping mode select switch condition.

   NG: Go to step   3 

   OK: REPLACE SUSPENSION CONTROL ECU 

2. CHECK SUSPENSION CONTROL ECU 
   1. Remove the suspension control ECU with connectors still connected.
   2. Turn the ignition switch ON.
   3. Measure the voltage between terminals TSW1 and TSW2 of the suspension control ECU connector and body ground when changing the damping mode select switch to each mode.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Condition	Specified Condition
      S21-5 (TSW1) - Body ground	COMFORT	9 to 14 V
      S21-5 (TSW1) - Body ground	NORMAL	9 to 14 V
      S21-5 (TSW1) - Body ground	SPORT 1	Below 1.5 V
      S21-5 (TSW1) - Body ground	SPORT 2	Below 1.5 V
      S21-13 (TSW2) - Body ground	COMFORT	Below 1.5 V
      S21-13 (TSW2) - Body ground	NORMAL	9 to 14 V
      S21-13 (TSW2) - Body ground	SPORT 1	9 to 14 V
      S21-13 (TSW2) - Body ground	SPORT 2	Below 1.5 V

   NG: REPLACE SUSPENSION CONTROL ECU 

   Fig 2: Measuring Voltage Between Terminals TSW1 & TSW2 Of Suspension Control ECU Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: GO TO NEXT STEP 

3. INSPECT SUSPENSION CONTROL SWITCH (DAMPING MODE SELECT SWITCH) 
   1. Remove the suspension control switch.
   2. Disconnect the suspension control switch (for damping mode select switch) connector.
   3. Measure the resistance between terminals 2, 7 and 4 of the suspension control switch (for damping mode select switch) connector when changing the damping mode select switch to each mode.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Condition	Specified Condition
      2 - 4	COMFORT	Below 1 Ω
      2 - 4	NORMAL	Below 1 Ω
      2 - 4	SPORT 1	10 kΩ or higher
      2 - 4	SPORT 2	10 kΩ or higher
      7 - 4	COMFORT	10 kΩ or higher
      7 - 4	NORMAL	Below 1 Ω
      7 - 4	SPORT 1	Below 1 Ω
      7 - 4	SPORT 2	10 kΩ or higher

   NG: REPLACE SUSPENSION CONTROL SWITCH (DAMPING MODE SELECT SWITCH) 

   Fig 3: Measuring Resistance Between Terminals 2, 7 & 4 Of Suspension Control Switch

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: GO TO NEXT STEP 

4. CHECK WIRE HARNESS (SUSPENSION CONTROL SWITCH (DAMPING MODE SELECT SWITCH) - SUSPENSION CONTROL ECU) 

   NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 

   OK: REPLACE SUSPENSION CONTROL ECU