DESCRIPTION Each unit of the navigation system connected to the AVC-LAN (communication bus) transfers the switch signals using the AVC-LAN. If a short to +B or short to ground occurs in the AVC-LAN, the navigation system will not function normally because communication is not possible. WIRING DIAGRAM ![]() CAUTION / NOTICE / HINT HINT: The navigation receiver assembly is the master unit. PROCEDURE
![]() (a) for Column Shift Type: (1) Remove the navigation receiver assembly with the connector(s) still connected (See page
(b) for Floor Shift Type: (1) Remove the navigation receiver assembly with the connector(s) still connected (See page
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Disconnect the J135 navigation receiver assembly connector. (b) Disconnect the J141 stereo component amplifier assembly connector. (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
(a) Disconnect and reconnect each slave unit one by one until the master unit returns to normal operation. HINT:
OK: Master unit returns to normal operation. Result
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Toyota Tundra Service Manual > Touch Select 2-4 And High-low System: Automatic Disconnecting Differential Motor Control Circuit Open (P17A0,P17A1)
DESCRIPTION This DTC is detected when an open circuit or short to ground in the A.D.D. shift motor drive circuit is detected. DTC Code DTC Detection Condition Diagnosis Condition Malfunction Status Malfunction Time Other Trouble Area P17A0 Ignition switch ON (when not switching between 2WD and 4H) O ...