Inspection Procedure

HINT:

Start the inspection from step 1 when using the intelligent tester, and start from step 2 when not using the intelligent tester.

1. READ VALUE OF INTELLIGENT TESTER 
   1. Connect the intelligent tester to the DLC3.
   2. Turn the ignition switch to the ON position, and push the intelligent tester main switch on,
   3. Select the item below in the DATA LIST, and read its value displayed on the intelligent tester.

      AIRSUS 

      ITEM CHART
      
      

      Item	Normal condition
      HEIGHT SW DOWN	ON: Height control switch while pressing "DOWN" button OFF: Neutral position
      HEIGHT SW UP	ON: Height control switch while pressing "UP" button OFF: Neutral position

   4. Check that the value displayed on the intelligent tester changes by pressing the height control switch "UP" or "DOWN".

      OK: 

      Height control switch value changes. 

   NG: Go to step 2 

   OK: REPLACE SUSPENSION CONTROL ECU 

2. INSPECT HEIGHT CONTROL SWITCH 
   1. Disconnect the height control switch connector.
   2. Measure the resistance according to the values in the table below.

   Resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Switch Condition	Tester Connection	Specified Condition
   "Down" button	1 (IGH) - 3 (LSW)	Below 1 Ω
   OFF	1 (IGH) - 3 (LSW) 1 (IGH) - 6 (HSW)	10 kΩ or higher
   "UP" button	1 (IGH) - 6 (HSW)	Below 1 Ω

   Fig 1: Identifying Height SW Switch Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPLACE HEIGHT CONTROL SWITCH 

   OK: Go to next step 

3. CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - HEIGHT CONTROL SWITCH) 
   1. Disconnect the suspension control ECU S15 connector.
   2. Measure the resistance according to the values in the table below.

   Resistance 

   Fig 2: Identifying Suspension Control ECU - Height Control Switch Connector

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

   Tester Connection	Specified Condition
   S15-15 (DNSW) - H22-3 (LSW)	Below 1 Ω
   S15-16 (UPSW) - H22-6 (HSW)	Below 1 Ω
   S15-15 (DNSW) - Body ground	10 kΩ or higher
   S15-16 (UPSW) - Body ground	10 kΩ or higher

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

4. CHECK HARNESS AND CONNECTOR (HEIGHT CONTROL SWITCH - BODY GROUND) 
   1. Measure the resistance according to the values in the table below.

   Resistance 

   TESTER CONNECTION SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   H22-1 (IGH) - Body ground	Below 1 Ω

   Fig 3: Identifying Height Control Switch - Body Ground Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE SUSPENSION CONTROL ECU