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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Check the rear height control sensor RH (when DTC C1713 is output).
   1. Remove the rear height control sensor 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 1 (SHB) of the height control sensor and the negative (-) end of the batteries to terminal 3 (SHG). While slowly moving the sensor link up and down, measure the voltage between terminal 2 (SHRR) and terminal 3 (SHG).
   4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection	Condition	Specified Condition
      3 (SHG) - 2 (SHRR)	Max. High (45°)	4.4 to 4.6 V
      	Normal (0°)	2.3 to 2.6 V
      	Min. Low (-45°)	0.4 to 0.6 V

      NOTE:

      Do not apply a voltage of 5 V or higher.

2. Check the rear height control sensor LH (when DTC C1714 is output).
   1. Remove the rear height control sensor 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 1 (SHB) of the height control sensor and the negative (-) end of the batteries to terminal 3 (SHG). While slowly moving the sensor link up and down, measure the voltage between terminal 2 (SHRL) and terminal 3 (SHG).
   4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection	Condition	Specified Condition
      3 (SHG) - 2 (SHRL)	Max. High (45°)	4.4 to 4.6 V
      	Normal (0°)	2.3 to 2.6 V
      	Min. Low (-45°)	0.4 to 0.6 V

      NOTE:

      Do not apply a voltage of 5 V or higher.

      Result

      Result	Proceed to
      OK	A
      NG (Rear height control sensor RH)	B
      NG (Rear height control sensor 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 RH (when DTC C1713 is output).
   1. Disconnect the S2 rear height control sensor RH connector.
   2. Disconnect the R22 suspension control ECU connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      S2-3 (SHG) - R22-16 (SGR2)	Always	Below 1 Ω
      S2-2 (SHRR) - R22-26 (SHRR)	Always	Below 1 Ω
      S2-1 (SHB) - R22-13 (SBR2)	Always	Below 1 Ω
      S2-3 (SHG) - Body ground	Always	10 kΩ or higher
      S2-2 (SHRR) - Body ground	Always	10 kΩ or higher
      S2-1 (SHB) - Body ground	Always	10 kΩ or higher

2. Check the rear height control sensor LH (when DTC C1714 is output).
   1. Disconnect the S5 rear height control sensor LH connector.
   2. Disconnect the R22 suspension control ECU connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection	Condition	Specified Condition
      S5-3 (SHG) - R22-15 (SGL2)	Always	Below 1 Ω
      S5-2 (SHRL) - R22-24 (SHRL)	Always	Below 1 Ω
      S5-1 (SHB) - R22-14 (SBL2)	Always	Below 1 Ω
      S5-3 (SHG) - Body ground	Always	10 kΩ or higher
      S5-2 (SHRL) - Body ground	Always	10 kΩ or higher
      S5-1 (SHB) - Body ground	Always	10 kΩ or higher

      Result

      Result
      OK
      NG

Result: 

OK 

REPLACE SUSPENSION CONTROL ECU. Refer to  REMOVAL [08/2015 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR