DTC C1713: Rear Height Control Sensor RH Circuit Malfunction; DTC C1714: Rear Height Control Sensor LH Circuit Malfunction [08/2015 - 08/2019]: Procedure

1. Check the rear height control sensor sub-assembly RH: (C1713).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   1. Remove the rear height control sensor sub-assembly RH (Refer to REMOVAL [08/2015 - ] ).
   2. Connect 3 dry cell batteries of 1.5 V in series.
   3. Connect the positive (+) end of the batteries to terminal 3 (SHB) of the height control sensor and the negative (-) end of the batteries to terminal 1 (SHG). While slowly moving the sensor link up and down, measure the voltage between terminal 2 (SHRR) and terminal 1 (SHG).
   4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection	Sensor Condition	Specified Condition
      1 (SHG) - 2 (SHRR)	High (45°)	3.60 to 4.52 V
      	Normal (0°)	2.06 to 2.45 V
      	Low (-45°)	0.40 to 0.51 V

      NOTE:

      Do not apply a voltage of more than 6 V.

2. Check the rear height control sensor sub-assembly LH: (C1714).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   1. Remove the rear height control sensor sub-assembly LH (Refer to REMOVAL [08/2015 - ] ).
   2. Connect 3 dry cell batteries of 1.5 V in series.
   3. Connect the positive (+) end of the batteries to terminal 3 (SHB) of the height control sensor and the negative (-) end of the batteries to terminal 1 (SHG). While slowly moving the sensor link up and down, measure the voltage between terminal 2 (SHRL) and terminal 1 (SHG).
   4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection	Sensor Condition	Specified Condition
      1 (SHG) - 2 (SHRL)	High (45°)	3.60 to 4.52 V
      	Normal (0°)	2.06 to 2.45 V
      	Low (-45°)	0.40 to 0.51 V

      NOTE:

      Do not apply a voltage of more than 6 V.

      RESULT
      
      

      Result	Proceed to
      OK	A
      NG (Rear height control sensor sub-assembly RH)	B
      NG (Rear height control sensor sub-assembly LH)	C

Result: 

B 

REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY RH 

(Refer to REMOVAL [08/2015 - ] )

Result: 

C 

REPLACE REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY LH 

(Refer to REMOVAL [08/2015 - ] )

Result: 

A 

See step  2

1. Check the rear height control sensor sub-assembly RH: (C1713).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   1. Disconnect the O18 ECU connector and z2 sensor connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      z2-1 (SHG) - O18-16 (SGR2)	Always	Below 1 Ω
      z2-2 (SHRR) - O18-26 (SHRR)	Always	Below 1 Ω
      z2-3 (SHB) - O18-13 (SBR2)	Always	Below 1 Ω
      z2-1 (SHG) or O18-16 (SGR2) - Body ground	Always	10 kΩ or higher
      z2-2 (SHRR) or O18-26 (SHRR) - Body ground	Always	10 kΩ or higher
      z2-3 (SHB) or O18-13 (SBR2) - Body ground	Always	10 kΩ or higher

2. Check the rear height control sensor sub-assembly LH: (C1714).

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   1. Disconnect the O18 ECU connector and z1 sensor connector.
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      z1-1 (SHG) - O18-15 (SGL2)	Always	Below 1 Ω
      z1-2 (SHRL) - O18-24 (SHRL)	Always	Below 1 Ω
      z1-3 (SHB) - O18-14 (SBL2)	Always	Below 1 Ω
      z1-1 (SHG) or O18-15 (SGL2) - Body ground	Always	10 kΩ or higher
      z1-2 (SHRL) or O18-24 (SHRL) - Body ground	Always	10 kΩ or higher
      z1-3 (SHB) or O18-14 (SBL2) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE SUSPENSION CONTROL ECU 

(Refer to REMOVAL [08/2015 - ] )

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR