Toyota Tacoma manuals

Toyota Tacoma (2015-2018) Service Manual: Diagnosis System

DIAGNOSIS SYSTEM

1. DESCRIPTION

(a) When troubleshooting a vehicle with a diagnosis system, the only difference from the usual troubleshooting procedure is connecting the Techstream to the vehicle and reading various data output from the clearance warning ECU assembly.

The clearance warning ECU assembly stores DTCs when the ECU detects a malfunction in the ECU itself or in its circuits.

To check the DTCs, connect the Techstream to the DLC3 on the vehicle. The Techstream makes it possible to clear the DTCs, activate the various actuators, and check the freeze frame data and Data List.

2. CHECK DLC3

(a) Check the DLC3 (See page Dtc Check / Clear ).

Terminals Of Ecu
TERMINALS OF ECU 1. CLEARANCE WARNING ECU ASSEMBLY (a) Disconnect the C30 connector from the clearance warning ECU assembly. (b) Measure the voltage and resistance according to the value(s) in th ...

Dtc Check / Clear
DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the back sonar or clearance sonar switch assembly on. (d) Turn the Techstream o ...

Other materials:

Operation Check
OPERATION CHECK 1. CHECK WIRELESS CHARGING SYSTEM OPERATION (a) Turn the ignition switch ON (IG or ACC). (b) Press the mobile wireless charger switch and check that the switch indicator light illuminates. Text in Illustration *a Switch Indicator Light (c) Plac ...

Steering Pad Switch
Components COMPONENTS ILLUSTRATION *1 STEERING PAD SWITCH ASSEMBLY - - Removal REMOVAL PROCEDURE 1. REMOVE STEERING PAD (See page ) 2. REMOVE STEERING PAD SWITCH ASSEMBLY (a) Disconnect the 2 connectors. ...

Dtc Combination Table
DTC COMBINATION TABLE HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U) (a) If a CAN communication error cannot be reproduced, determine the suspected malfunctioning part using the DTCs stored in ECUs that are connected to the CAN buses by following the procedure below. HINT: Comm ...

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