Diagnosis System

DIAGNOSIS SYSTEM
1. Indicator light
  
  Fig 1: Identifying HEIGHT HIGH Indicator Light
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. If a malfunction is detected in the vehicle height control function, the following occurs: 1) The "HEIGHT HIGH" indicator light blinks at 1 second intervals, the master warning light illuminates, and "Check Air Suspension System" is displayed on the multi-information display.
2. DTCs (Normal mode)
  1. DTCs are memorized in the suspension control ECU and read by using the Intelligent tester. Refer to the DTC check procedure (see DTC CHECK / CLEAR ).
    
    Fig 2: Identifying Indicator Light Output Pattern
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Test mode
  1. By switching from normal mode into test mode, you can inspect the front acceleration sensor and rear acceleration sensor (see TEST MODE PROCEDURE ).

CHECK INDICATOR LIGHT

Fig 3: Identifying HEIGHT HIGH Indicator Light

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Turn the engine switch on (IG).

Check that the height control indicator light (HEIGHT HIGH) and absorber control indicator light (SPORT and COMFORT) comes on for 2 seconds. If the indicator check result is not normal, proceed to troubleshooting for the indicator light circuit.

INDICATOR LIGHT

Trouble Area	See procedure
Indicator circuit	INDICATOR CIRCUIT