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 .gif)
).
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:
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE TELEPHONE MICROPHONE ASSEMBLY
Click here
2. REMOVE MICROPHONE CASE
HINT:
Use the same procedure for Double Cab.
Click here
3. REMOVE NO. 1 ROOF WIRE (w/ Vanity Light)
(a) w/ EC Mirror:
(1) Remove the No. 1 roof wire.
...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE STEERING GEAR OUTLET RETURN TUBE
(a) Using a union nut wrench, remove the steering gear outlet return tube.
2. REMOVE STEERING TURN PRESSURE TUBE
(a) Using a union nut wrench, remove the 2 pressure tubes.
(b) Remove the 4 O-rings from the pressure tubes.
3. ...
Disposal
DISPOSAL
CAUTION / NOTICE / HINT
CAUTION:
Before performing pre-disposal deployment of any SRS part, review and closely
follow all applicable environmental and hazardous material regulations. Predisposal
deployment may be considered hazardous material treatment.
PROCEDURE
1. PRECAUTION
...
