DESCRIPTION This DTC is detected when a short to B+ is detected in the solenoid coil drive circuit.
WIRING DIAGRAM Refer to DTCs P17A5 and P17A6 (See page PROCEDURE
![]() (a) Disconnect the 4 wheel drive control ECU connector. (b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
(a) Disconnect the A26 4 wheel drive control ECU connector. (b) Disconnect the D67 transfer shift actuator assembly connector. (c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
![]() (a) Disconnect the A solenoid coil sub-assembly connector. (b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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Toyota Tundra Service Manual > Touch Select 2-4 And High-low System: Fail-safe Chart
FAIL-SAFE CHART TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM DTC NO. Fail-safe Operation Fail-safe Deactivation Condition U0100 Prohibits switching to 4L or switching from 4L for all shift positions CAN communication signal from ECM is received U0122 Prohibits all switching except from 4H to 2WD CAN communi ...