Wire Diagram Toyota Tacoma Obd Ii Proprietary Connector

Refer to the following pages.

• Throttle position sensor circuit (See page ES-114).

• Canister pump module circuit (See page ES-397).

• Secondary air injection pressure sensor circuit (See page ES-192).

• Accelerator pedal circuit (See page ES-305).

CHECK MIL

(a) Check that the Malfunction Indicator Lamp (MIL) lights up when turning the ignition switch ON. OK: MIL lights up

CHECK CONNECTION BETWEEN INTELLIGENT TESTER AND ECM

(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch ON and intelligent tester ON.

(c) Check the communication between the intelligent tester and ECM.

Result

Proceed to

Communication is possible

A

Communication is not possible

GO TO MIL CIRCUIT

CHECK MIL (THROTTLE BODY)

(a) Disconnect the throttle body connector.

(b) Turn the ignition switch ON.

(c) Check the MIL. Result

Result

Proceed to

MIL illuminates

A

MIL does not illuminate

B

REPLACE THROTTLE BODY

REPLACE THROTTLE BODY

CHECK MIL (ACCELERATOR PEDAL)

(a) Disconnect the accelerator pedal connector.

(b) Turn the ignition switch ON.

(c) Check the MIL. Result

Result

Proceed to

MIL illuminates

A

MIL does not illuminate

B

REPLACE ACCELERATOR PEDAL ASSEMBLY

CHECK MIL (PRESSURE SENSOR FOR SECONDARY AIR INJECTION)

(a) Disconnect the pressure sensor connector.

(b) Turn the ignition switch ON.

Result

Result

Proceed to

MIL illuminates

A

MIL does not illuminate

B

REPLACE PRESSURE SENSOR

REPLACE PRESSURE SENSOR

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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