Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VJ8E |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 - 11/2017] |
Title: PARK ASSIST / MONITORING: PARKING ASSIST MONITOR SYSTEM: C1621,C1622; Back Camera Power Supply Failure; 2016 - 2017 MY Sienna [12/2015 - 11/2017] |
DTC
|
C1621
|
Back Camera Power Supply Failure
|
DTC
|
C1622
|
Open or Short Circuit in Back Camera Signal
|
DESCRIPTION
This DTC is stored if the parking assist ECU judges as a result of its self check that the signals or signal lines between the parking assist ECU and the rear television camera assembly are not normal.
DTC Code
|
DTC Detection Condition
|
Trouble Area
|
C1621
|
Rear television camera power supply failure
|
-
Harness or connector
-
Rear television camera assembly
-
Parking assist ECU
|
C1622
|
An open or short in the rear television camera signal circuit
|
-
Harness or connector
-
Rear television camera assembly
-
Parking assist ECU
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
When "System is initializing" is displayed on the navigation receiver assembly after the battery terminal has been disconnected, correct the steering angle neutral point (See page
).
-
Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the parking assist monitor system may be needed (See page
).
PROCEDURE
1.
|
CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA ASSEMBLY)
|
(a) Disconnect the D164 parking assist ECU connector.
(b) Disconnect the W13 rear television camera assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D164-38 (CV-) - W13-2 (CV-)
|
Always
|
Below 1 Ω
|
D164-15 (CV+) - W13-3 (CV+)
|
Always
|
Below 1 Ω
|
D164-14 (CB+) - W13-6 (CB+)
|
Always
|
Below 1 Ω
|
D164-37 (CGND) - W13-5 (CGND)
|
Always
|
Below 1 Ω
|
D164-38 (CV-) or W13-2 (CV-) - Body ground
|
Always
|
10 kΩ or higher
|
D164-15 (CV+) or W13-3 (CV+) - Body ground
|
Always
|
10 kΩ or higher
|
D164-14 (CB+) or W13-6 (CB+) - Body ground
|
Always
|
10 kΩ or higher
|
D164-37 (CGND) or W13-5 (CGND) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
2.
|
INSPECT PARKING ASSIST ECU
|
(a) Reconnect the parking assist ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
D164-38 (CV-) - Body ground
|
Always
|
Below 1 Ω
|
D164-37 (CGND) - Body ground
|
Always
|
Below 1 Ω
|
|
|
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Switch Condition
|
Specified Condition
|
D164-14 (CB+) - D164-37 (CGND)
|
Ignition switch ON
Shift lever in R
|
5.8 to 7.0 V
|
Text in Illustration
*a
|
Component with harness connected
(Parking Assist ECU)
|
OK
|
|
|
3.
|
CHECK REAR TELEVISION CAMERA ASSEMBLY
|
(a) Reconnect the W13 rear television camera assembly connector.
(b) Reconnect the parking assist ECU connectors.
Text in Illustration
*a
|
Component with harness connected
(Parking Assist ECU)
|
|
|
(c) Check the waveform of the rear television camera assembly using an oscilloscope.
HINT:
A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.
OK:
Waveform is as shown in the illustration.
Reference
Item
|
Content
|
Terminal No. (Symbol)
|
D164-15 (CV+) - D164-37 (CGND)
|
Tool Setting
|
200 mV/DIV., 50 μsec./DIV.
|
Condition
|
Ignition switch ON, shift lever in R
|
HINT:
The video waveform changes according to the image sent by the rear television camera assembly.
Text in Illustration
*a
|
Waveform 1 (under normal conditions)
|
*b
|
Waveform 2 (camera lens is covered, blacking out the screen)
|
*c
|
Synchronized Signal
|
*d
|
Video Waveform
|
|
|
|