AUDIO AND VISUAL SYSTEM (for Radio and Display Type) Reverse Signal Circuit

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DESCRIPTION

The radio and display receiver assembly receives a reverse signal from the park/neutral position switch assembly*1 or back-up light switch assembly*2 to use for adjusting the vehicle position on the multi-display.

• *1: except Manual Transaxle

• *2: for Manual Transaxle

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INSPECTION PROCEDURE

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PROCEDURE

1. Click here

   CHECK VEHICLE SIGNAL (OPERATION CHECK)

   
   
   1. 

      Enter the "Vehicle Signal Check Mode" screen. [Refer to Check Vehicle Signal in Operation Check (Click here)]

   2. Check that the display changes between ON and OFF according to the shift lever position.

      OK
      Shift Lever Position Display R ON Except R OFF

      Tip:

      This display is updated once per second. As a result, it is normal for the display to lag behind the actual shift lever position.

   
   
   • OKClick here
   • NGClick here
2. Click here

   CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   
   1. 

      Disconnect the radio and display receiver assembly connector.

   2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition H105-2 (REV) - Body ground Ignition switch ON, shift lever in R 7.5 to 14 V H105-2 (REV) - Body ground Ignition switch ON, shift lever not in R Below 1 V

      Table 1. Text in Illustration

      *a	Front view of wire harness connector (to Radio and Display Receiver Assembly)

      Table 2. Result

      Result	Proceed to
      OK	A
      NG (except Manual Transaxle)	B
      NG (for Manual Transaxle)	C

   
   
   • AClick here
   • BClick here
   • CClick here
3. Click here

   CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

   
   

   1. Disconnect the H105 radio and display receiver assembly connector.

   2. Disconnect the C23 park/neutral position switch assembly connector.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition H105-2 (REV) - C23-2 (RL) Always Below 1 Ω H105-2 (REV) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
4. Click here

   CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY)

   
   

   1. Disconnect the H105 radio and display receiver assembly connector.

   2. Disconnect the C7*1 or D4*2 back-up light switch assembly connector.

      
      

      • *1: except 1WW

      • *2: for 1WW

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      except 1WW
      Tester Connection Condition Specified Condition H105-2 (REV) - C7-1 (RL) Always Below 1 Ω H105-2 (REV) - Body ground Always 10 kΩ or higher
      for 1WW
      Tester Connection Condition Specified Condition H105-2 (REV) - D4-1 (RL) Always Below 1 Ω H105-2 (REV) - Body ground Always 10 kΩ or higher

      Table 3. Result

      Result	Proceed to
      OK (for Manual Transaxle [EA65])	A
      OK (for Manual Transaxle [EC61])	B
      OK (for Manual Transaxle [EC62])	C
      NG	D

   
   
   • AClick here
   • BClick here
   • CClick here
   • DClick here
5. Click here

   REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLYClick here

6. Click here

   REPLACE BACK-UP LIGHT SWITCH ASSEMBLYClick here

7. Click here

   REPLACE BACK-UP LIGHT SWITCH ASSEMBLYClick here

8. Click here

   REPLACE BACK-UP LIGHT SWITCH ASSEMBLYClick here

9. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

10. Click here

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here

11. Click here

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here