Remote Keyless Entry Receiver Circuit Check

Remote Keyless Entry Receiver Circuit Check

Description

Receives keyfob operation and transmits to BCM.

Component Function Check

1. CHECK FUNCTION

With SDT

Check remote keyless entry receiver by pressing the keyfob lock and unlock buttons then monitoring "KEYLESS LOCK" and "KEYLESS UNLOCK" in data list mode "DOOR LOCK" with SDT.






Is the inspection result normal?
YES
Remote keyless entry receiver is OK.
NO
Refer to "Diagnosis Procedure".

Diagnosis Procedure

Regarding Wiring Diagram information, refer to [Remote Keyless Entry System: Wiring Diagram [King Cab] Remote Keyless Entry System [King Cab] ] or [Remote Keyless Entry System: Wiring Diagram [Crew Cab] Remote Keyless Entry System [Crew Cab] ].

1. CHECK REMOTE KEYLESS ENTRY RECEIVER OUTPUT SIGNAL

1 Turn ignition switch OFF.
2 Check remote keyless entry receiver signal with an oscilloscope.










Is the inspection result normal?
YES
GO TO 2
NO
GO TO 4

2. REMOTE KEYLESS ENTRY RECEIVER 5-VOLT CIRCUIT INSPECTION

Check voltage between remote keyless entry receiver connector M120 terminal 4 and ground.











Is the inspection result normal?
YES
GO TO 3
NO
GO TO 4

3. REMOTE KEYLESS ENTRY RECEIVER GROUND CIRCUIT INSPECTION

Check continuity between remote keyless entry receiver connector M120 terminal 1 and ground.











Is the inspection result normal?
YES
Replace remote keyless entry receiver.
NO
GO TO 4

4. HARNESS INSPECTION BETWEEN BCM AND RKE RECEIVER

1 Disconnect remote keyless entry receiver and BCM connectors.
2 Check continuity between BCM connector M18 terminals 18, 19, 20 and remote keyless entry receiver connector M120 terminals 1, 2, 4.











3 Check continuity between remote keyless entry receiver connector M120 terminals 1, 2, 4 and ground.






Is the inspection result normal?
YES
Replace remote keyless entry receiver.
NO
Repair or replace the harness between the remote keyless entry receiver and BCM.