DESCRIPTION This DTC is detected when a short to B+ is detected in the A.D.D. shift motor drive circuit.
WIRING DIAGRAM Refer to DTCs P17A0 and P17A1 (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 A25 4 wheel drive control ECU connector. (b) Disconnect the G1 A.D.D. actuator (differential vacuum actuator assembly) connector. (c) Measure the voltage according to the value(s) in the table below. Standard Voltage:
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Toyota Tundra Service Manual > Oil Pump: Inspection
INSPECTION PROCEDURE 1. INSPECT OIL PUMP RELIEF VALVE (a) Coat the relief valve with engine oil. (b) Check that the relief valve falls smoothly into the valve hole by its own weight. If the relief valve is not as specified, replace it. If necessary, replace the timing chain cover sub-assembly. 2. IN ...