DIAGNOSIS SYSTEM 1. DESCRIPTION When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the vehicle's trailer brake control ECU (brake control with bracket relay). The trailer brake control ECU (brake control with bracket relay) records DTCs when it detects a malfunction in itself or in its circuits. To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream enables you to clear the DTCs, activate the various actuators, and check the Data List. (a) Check the battery voltage. Standard voltage: 11 to 14 V If the voltage is below 11 V, recharge the battery before proceeding to the next step. (b) Check the DLC3 (See page 2. DIAGNOSIS (a) When a malfunction occurs in the trailer brake control system, a warning is displayed on the multi-information display. |
Toyota Tundra Service Manual > Meter / Gauge System: Terminals Of Ecu
TERMINALS OF ECU 1. CHECK COMBINATION METER (a) Measure the voltage, resistance and waveform according to the value(s) in the table below. Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition *1: w/ Intuitive Parking Assist System *2: w/ Towing Package *3: The minimu ...