DTC Code | DTC Name |
---|---|
U0200 | Lost Communication with "Door Control Module B" |
DESCRIPTION
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from |
---|---|---|---|---|
U0200 | Lost Communication with "Door Control Module B" | There is no communication from the outer mirror control ECU assembly RH. |
|
Main body ECU (multiplex network body ECU) |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
Note
Before measuring the resistance of the CAN bus, turn the power switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Some parts must be initialized and set when replacing or removing and installing parts.
Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.
After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.
DTC check procedure: Turn the power switch on (IG) and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.
After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.
Inspect the fuses for circuits related to this system before performing the following procedure.
Tech Tips
Operating the power switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.
Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
PROCEDURE
RECONFIRM DTC OUTPUT
Check for DTCs.
Tech Tips
If DTC U1002 is output from the gateway 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 | ||||||
---|---|---|---|---|---|---|
|
B |
GO TO DIAGNOSIS PROCEDURE INDICATED BY OUTPUT DTC Click here |
A |
CHECK FOR OPEN IN CAN BUS WIRE (OUTER MIRROR CONTROL ECU ASSEMBLY RH BRANCH WIRE)
Disconnect the cable from the negative (-) auxiliary battery terminal.
*a | Front view of wire harness connector (to Outer Mirror Control ECU Assembly RH) |
Disconnect the outer mirror control ECU assembly RH connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
NG |
REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR |
OK |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT)
*a | Front view of wire harness connector (to Outer Mirror Control ECU Assembly RH) |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Reconnect the cable to the negative (-) auxiliary battery terminal.
Note
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH Click here |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |