Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM1000000018DMS |
Model Year Start: 2018 |
Model: Sienna |
Prod Date Range: [11/2017 - 08/2018] |
Title: NETWORKING: CAN COMMUNICATION SYSTEM: U0230; Lost Communication with Rear Gate Module; 2018 MY Sienna [11/2017 - 08/2018] |
DTC
|
U0230
|
Lost Communication with Rear Gate Module
|
DESCRIPTION
DTC Code
|
DTC Detection Condition
|
Trouble Area
|
U0230
|
There is no communication from the power back door unit assembly (power back door ECU).
|
-
Power back door unit assembly (power back door ECU) CAN branch wire or connector
-
Power source or inside of power back door unit assembly (power back door ECU)
-
Power back door unit assembly (power back door ECU) ground circuit
-
Power back door unit assembly (power back door ECU)
|
HINT:
For vehicle with power back door only.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
-
Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
-
When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.
PROCEDURE
(a) Reconfirm DTCs.
HINT:
If DTC U1002 is output from Main Body of the main body ECU (multiplex network body ECU), this indicates a sub bus 1 malfunction. Troubleshoot for DTC U1002 and check for malfunctions in sub bus 1.
Result
Result
|
Proceed to
|
DTC U1002 is not output from main body ECU (multiplex network body ECU) (Techstream display : Main Body)
|
A
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DTC U1002 is output from main body ECU (multiplex network body ECU) (Techstream display : Main Body)
|
B
|
A
|
|
|
2.
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CHECK FOR OPEN IN CAN BUS WIRE (POWER BACK DOOR ECU CAN BRANCH WIRE)
|
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the power back door unit assembly (power back door ECU) connector.
|
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
K14-6 (CANP) - K14-5 (CANN)
|
Cable disconnected from negative (-) battery terminal
|
54 to 69 Ω
|
Text in Illustration
*a
|
Front view of wire harness connector
(to Power Back Door Unit Assembly (Power Back Door ECU))
|
NG |
|
REPAIR OR REPLACE CAN BRANCH OR CONNECTOR
|
OK
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (POWER BACK DOOR ECU - POWER SOURCE)
|
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
K14-11 (GND) - Body ground
|
Cable disconnected from negative (-) battery terminal
|
Below 1 Ω
|
|
|
(b) Reconnect the cable to the negative (-) battery terminal.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page
).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Switch Condition
|
Specified Condition
|
K14-10 (ECUB) - Body ground
|
Always
|
11 to 14 V
|
K14-12 (B) - Body ground
|
Always
|
11 to 14 V
|
K14-8 (IG) - Body ground
|
Ignition switch ON
|
11 to 14 V
|
Text in Illustration
*a
|
Front view of wire harness connector
(to Power Back Door Unit Assembly (Power Back Door ECU))
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|