Toyota Tacoma 2015-2018 Service Manual: Diagnosis System

DIAGNOSIS SYSTEM

1. CHECK DLC3

(a) Check the DLC3 (See page ).

2. INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery.

3. SELF-DIAGNOSTIC MODE (OPERATING IGNITION KEY CYLINDER)

(a) Switch to self-diagnostic mode.

(1) Insert the key into the ignition key cylinder and remove it.

(2) Within 5 seconds after the key is removed, insert it into the ignition key cylinder and then turn the ignition switch to ON then off once. (End in off)

(3) Within 30 seconds after turning the ignition switch off, perform the following 9 times: Turn the ignition switch to ON then off. (End in off)

HINT:

Turning the ignition switch to ON after the procedure above has been completed will end the self-diagnostic mode.

NOTICE:

If the system fails to enter self-diagnostic mode, the system will return to normal mode.

(b) Check that the system has switched to self-diagnostic mode by checking the interior light output pattern.

(c) Check that the system has switched to self-diagnostic mode by checking the wireless door lock buzzer output pattern.

(d) Check the diagnostic outputs when the door control transmitter module set sub-assembly switch is held down. The diagnostic outputs can be checked by the interior light and wireless door lock buzzer patterns.