DTC C1762: Continuous Electric Current to Exhaust Solenoid: Procedure

1. Check if any of the air tubes are clogged.

   OK

   No clogs.

NG → REPAIR OR REPLACE AIR TUBE 

OK: Go to next step 

1. Remove the front height control valve. Refer to REMOVAL .
2. Check the front height control valve (valve RH).
   Fig 1: Identifying Front Height Control Valve Connector Terminals (Valve RH)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Apply 12 V battery voltage to the control valve and check the operation of the valve RH.

      OK

      Measurement Condition	Specified Condition
      12 V battery positive (+) → Terminal 1 (RH+) 12 V battery negative (-) → Terminal 2 (E)	It make an operating sound

3. Check the front height control valve (valve LH).
   Fig 2: Identifying Rear Height Control Valve Connector Terminal (Valve LH)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Apply 12 V battery voltage to the control valve and check the operation of the valve LH.

      OK

      Measurement Condition	Specified Condition
      12 V battery positive (+) → Terminal 3 (LH+) 12 V battery negative (-) → Terminal 2 (E)	It make an operating sound

NG → See step   5 

OK: Go to next step 

1. Remove the rear height control valve. Refer to REMOVAL .
2. Check the rear height control valve (valve RH).
   Fig 3: Identifying Rear Height Control Valve Connector Terminals (Valve RH)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Apply 12 V battery voltage to the control valve and check the operation of the valve RH.

      OK

      Measurement Condition	Specified Condition
      12 V battery positive (+) → Terminal 1 (+RH) 12 V battery negative (-) → Terminal 2 (E)	It make an operating sound

3. Check the rear height control valve (valve LH).
   Fig 4: Identifying Rear Height Control Valve Connector Terminal (Valve LH)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Apply 12 V battery voltage to the control valve and check the operation of the valve LH.

      OK

      Measurement Condition	Specified Condition
      12 V battery positive (+) → Terminal 3 (+LH) 12 V battery negative (-) → Terminal 2 (E)	It make an operating sound

NG → See step   8 

OK: Go to next step 

1. Remove the height control compressor. Refer to REMOVAL .
2. Inspect if the exhaust valve is stuck
   Fig 5: Identifying Exhaust Valve Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Apply 12 V battery voltage to the exhaust valve and check the operation of the valve.

      OK

      Measurement Condition	Specified Condition
      12 V battery positive (+) → Terminal 1 12 V battery negative (-) → Terminal 2	It should make an operating sound (click)

NG → See step   6 

OK → See step   7