Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM1000000018F8W |
Model Year Start: 2018 |
Model: Sienna |
Prod Date Range: [11/2017 -
] |
Title: AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: Reverse Signal Circuit; 2018 - 2020 MY Sienna [11/2017 - ] |
DESCRIPTION
The radio and display receiver assembly receives a reverse signal from the park/neutral position switch.
WIRING DIAGRAM
PROCEDURE
1.
|
CHECK VEHICLE SIGNAL (OPERATION CHECK)
|
(a) Enter the "Vehicle Signal Check Mode" screen. [Refer to Check Vehicle Signal in Operation Check (See page
)].
|
|
(b) Check that the display changes between ON and OFF according to the shift lever position.
HINT:
This display is updated once per second. As a result, it is normal for the display to lag behind the actual shift lever position.
OK:
Shift Lever Position
|
Display
|
R
|
ON
|
Except R
|
OFF
|
OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
(See page
)
|
NG
|
|
|
2.
|
CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY
|
(a) Disconnect the radio and display receiver assembly connector.
|
|
*a
|
Front view of wire harness connector
(to Radio and Display Receiver Assembly)
|
|
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Switch Condition
|
Specified Condition
|
D195-28 (REV) - Body ground
|
Ignition switch ON, shift lever in R
|
11 to 14 V
|
D195-28 (REV) - Body ground
|
Ignition switch ON, shift lever not in R
|
Below 1 V
|
NG
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH)
|
(a) Disconnect the D195 radio and display receiver assembly connector.
(b) Disconnect the B66 park/neutral position switch connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D195-28 (REV) - B66-2 (RL)
|
Always
|
Below 1 Ω
|
D195-28 (REV) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BATTERY)
|
(a) Disconnect the park/neutral position switch connector.
|
|
*a
|
Front view of wire harness connector
(to Park/neutral Position Switch)
|
|
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Switch Condition
|
Specified Condition
|
B66-1 (RB) - Body ground
|
Ignition switch ON
|
11 to 14 V
|
Result
Result
|
Proceed to
|
OK (for UA80E)
|
A
|
OK (for UA80F)
|
B
|
NG
|
C
|
C |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|