Toyota Tacoma (2015-2018) Service Manual: TC and CG Terminal Circuit
DESCRIPTION
The DLC3 circuit enables reading of Diagnostic Trouble Codes (DTCs) with no Techstream by connecting terminals TC and CG of the DLC3 connector.
Stored DTCs are displayed in blinking patterns of the CRUISE MAIN indicator light located on the combination meter.
WIRING DIAGRAM
HINT:
When a particular warning light blinks continuously, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in the relevant ECU is suspected.
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (TC of DLC3 - ECM) |
(a) Disconnect the E21 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
D4-13 (TC) - E14-20 (TC) |
Always |
Below 1 Ω |
(c) Reconnect the ECM connector.
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (TC of DLC3 - BODY GROUND) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (CG of DLC3 - BODY GROUND) |
|
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| OK | |
REPLACE ECM |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Cruise Main Indicator Light Circuit
DESCRIPTION
When the ECM detects a cruise control switch on signal from the cruise
control switch, the ECM sends the signal to the combination meter assembly
through CAN communication. ...
Other materials:
Abnormal Change in Output Signal of Rear Speed Sensor RH (Test Mode DTC) (C1277,...,C1416)
DESCRIPTION
Refer to DTCs C1401 and C1402 (See page ).
DTC Code
DTC Detection Condition
Trouble Area
C1277
C1278
Stored only during test mode.
Rear speed sensor RH/LH
Rear speed sensor rotor RH/LH (Rear ax ...
High Power Supply Voltage Malfunction (C1417)
DESCRIPTION
If a malfunction is detected in the power supply circuit, the skid control ECU
(brake actuator assembly) stores this DTC and the fail-safe function prohibits ABS
operation.
This DTC is stored when the +BS terminal voltage deviates from the DTC detection
condition due to a malfunc ...
System Description
SYSTEM DESCRIPTION
1. SYSTEM FUNCTION
Function
Outline
Push-button start function
When the key is brought into the vehicle and verified, this function
changes the power source or starts the engine when the engine switch and
brake pedal are ...
