DESCRIPTION If any of the M1 or M2 seat memory switch is pressed, the outer mirror control ECU assembly LH detects the switch operation and sends the seat memory switch signal to the main body ECU (multiplex network body ECU) via CAN communication. The main body ECU (multiplex network body ECU) sends the reproduction signal to each outer mirror control ECU assembly via CAN communication. When receiving the reproduction signal, each outer mirror control ECU assembly operates the vertical and horizontal mirror motors, which are built into the outer rear view mirror assembly, to adjust the mirror surface to the stored position. WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT NOTICE: The power mirror control system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure. Click here PROCEDURE
(a) When any seat memory switch (M1 or M2) is pressed, check that the driver seat moves to the memorized position. Click here OK: Driver seat moves to the memorized position.
(a) Check the electrical remote control mirror function. Click here OK: Electrical remote control mirror function is normal.
(a) Using the Techstream, read the Data List. Click here (1) for LH Side: Mirror L
(2) for RH Side: Mirror R
OK: ON (Memorized) appears on the screen.
(a) Check the memory and reactivation function. Click here
(a) Disconnect the N13 outer mirror control ECU assembly LH connector. (b) Disconnect the N5 outer rear view mirror assembly LH connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Temporarily replace the outer rear view mirror assembly LH with a new or known good one. Click here
(a) Check the memory and reactivation function. Click here
(a) Disconnect the M12 outer mirror control ECU assembly RH connector. (b) Disconnect the M6 outer rear view mirror assembly RH connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Temporarily replace the outer rear view mirror assembly RH with a new or known good one. Click here
(a) Check the memory and reactivation function. Click here
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Toyota Tundra Service Manual > Meter / Gauge System: Lost Communication with Brake System Control Module (U0129)
DESCRIPTION The combination meter communicates with the skid control ECU via the CAN line. DTC Code DTC Detection Condition Trouble Area U0129 When either of following conditions is detected: 15 seconds have elapsed since engine started and IG voltage 10.5 V or more No communication with skid contro ...