DESCRIPTION
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
---|---|---|---|---|
U0199 | Lost Communication with "Door Control Module A" | No communication from the outer mirror control ECU assembly (for front passenger side) continues. |
| HINT: The main body ECU (multiplex network body ECU) stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 1. |
HINT:
This diagnostic procedure is for when DTC U0199 is output by the main body ECU (multiplex network body ECU) (Techstream display: Main Body).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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HINT:
PROCEDURE
1. | RECONFIRM DTC OUTPUT |
(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.
Body Electrical > Main Body > Trouble Codes Result | Proceed to |
---|---|
DTC U1002 is not output from the main body ECU (multiplex network body ECU) (Techstream display: Main Body) | A |
DTC U1002 is output from the main body ECU (multiplex network body ECU) (Techstream display: Main Body) | B |
B | ![]() | GO TO DIAGNOSTIC PROCEDURE INDICATED BY OUTPUT DTC |
|
2. | CHECK FOR OPEN IN SUB BUS 1 LINES (OUTER MIRROR CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SIDE) BRANCH LINE) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the M4 outer mirror control ECU assembly (for front passenger side) connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
M4-9 (CANP) - M4-8 (CANN) | Cable disconnected from negative (-) battery terminal | 54 to 69 Ω |
NG | ![]() | REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (OUTER MIRROR CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SIDE)) |
|
3. | CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(b) Reconnect the cable to the negative (-) battery terminal.
(c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK | ![]() | REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY (FOR FRONT PASSENGER SIDE) |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
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