NO.3 TRANSMITTER ID CODE CANNOT BE REPROGRAMMED [KEYLESS ENTRY SYSTEM]

id0903d2800800

Possible Causes

• Mis-operation in ID number updating or BCM malfunction

Diagnostic Procedure

Step

Inspection

Action

1

Is the customer's keyless entry system standard equipment?

Yes

Go to the next step.

No

Perform troubleshooting following the separate service manual.

2

Does the on-board diagnosis function operate?

Yes

Go to the next step.

No

Perform symptom troubleshooting No.1.

(See NO.1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE [KEYLESS ENTRY SYSTEM].)

3

Do all doors lock/unlock using the transmitter?

Yes

Go to the next step.

No

Perform symptom troubleshooting No.2.

(See NO.2 ALL ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE [KEYLESS ENTRY SYSTEM].)

4

Perform ID number updating following the procedure.

(See TRANSMITTER ID CODE REGISTRATION [KEYLESS ENTRY SYSTEM].)

Can the ID number be updated?

Yes

System is normal.

No

Go to the next step.

5

Inspect the keyless receiver.

•  Is the keyless receiver power supply voltage normal?

4-pin connector type

―  Power supply (+B) (terminal D)

6-pin connector type

―  Power supply (+B) (terminal A)

Yes

Go to the next step.

No

•  Inspect for a burnt fuse (ROOM 15 A)

•  Inspect the power supply system wiring harness for an open or short circuit.

6

Inspect the keyless receiver.

•  Is the keyless receiver grounded normally?

4-pin connector type

―  0 V (terminal B)

6-pin connector type

―  0 V (terminal E)

Yes

Go to the next step.

No

Inspect the ground system wiring harness for an open circuit.

7

Turn the ignition switch to the LOCK position.

Disconnect the negative battery cable.

Disconnect the keyless receiver connector (4-pin/6-pin) and the BSM connector (24-pin).

•  Inspect the wiring harness between the following terminals for an open or short circuit.

4-pin connector type

―  Terminal C to 6W

6-pin connector type

―  Terminal D to 6W

•  Is it normal?

Yes

Go to the next step.

No

Repair or replace the wiring harness between the keyless receiver connector and the BCM connector, then go to the next step.

8

Connect the negative battery cable.

Is the signal voltage transmitted from the keyless receiver to the BCM is normal when the transmitter is operated with the key not inserted into the ignition key cylinder.

•  B+→1.0V or less (Terminal 6W)

Yes

Replace the BCM, then go to the next step.

(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)

No

Replace the keyless receiver, then go to the next step.

(See KEYLESS RECEIVER REMOVAL/INSTALLATION [KEYLESS ENTRY SYSTEM].)

9

Can the ID number be updated?

(See TRANSMITTER ID CODE REGISTRATION [KEYLESS ENTRY SYSTEM].)

Yes

Troubleshooting completed.

No

Verify the malfunction, then go to Step 1 if it recurs.

Step	Inspection		Action
1	Is the customer's keyless entry system standard equipment?	Yes	Go to the next step.
1	Is the customer's keyless entry system standard equipment?	No	Perform troubleshooting following the separate service manual.
2	Does the on-board diagnosis function operate?	Yes	Go to the next step.
2	Does the on-board diagnosis function operate?	No	Perform symptom troubleshooting No.1. (See NO.1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE [KEYLESS ENTRY SYSTEM].)
3	Do all doors lock/unlock using the transmitter?	Yes	Go to the next step.
3	Do all doors lock/unlock using the transmitter?	No	Perform symptom troubleshooting No.2. (See NO.2 ALL ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE [KEYLESS ENTRY SYSTEM].)
4	Perform ID number updating following the procedure. (See TRANSMITTER ID CODE REGISTRATION [KEYLESS ENTRY SYSTEM].) Can the ID number be updated?	Yes	System is normal.
4		No	Go to the next step.
5	Inspect the keyless receiver. • Is the keyless receiver power supply voltage normal? 4-pin connector type ― Power supply (+B) (terminal D) 6-pin connector type ― Power supply (+B) (terminal A)	Yes	Go to the next step.
5		No	• Inspect for a burnt fuse (ROOM 15 A) • Inspect the power supply system wiring harness for an open or short circuit.
6	Inspect the keyless receiver. • Is the keyless receiver grounded normally? 4-pin connector type ― 0 V (terminal B) 6-pin connector type ― 0 V (terminal E)	Yes	Go to the next step.
6		No	Inspect the ground system wiring harness for an open circuit.
7	Turn the ignition switch to the LOCK position. Disconnect the negative battery cable. Disconnect the keyless receiver connector (4-pin/6-pin) and the BSM connector (24-pin). • Inspect the wiring harness between the following terminals for an open or short circuit. 4-pin connector type ― Terminal C to 6W 6-pin connector type ― Terminal D to 6W • Is it normal?	Yes	Go to the next step.
7		No	Repair or replace the wiring harness between the keyless receiver connector and the BCM connector, then go to the next step.
8	Connect the negative battery cable. Is the signal voltage transmitted from the keyless receiver to the BCM is normal when the transmitter is operated with the key not inserted into the ignition key cylinder. • B+→1.0V or less (Terminal 6W)	Yes	Replace the BCM, then go to the next step. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)
8		No	Replace the keyless receiver, then go to the next step. (See KEYLESS RECEIVER REMOVAL/INSTALLATION [KEYLESS ENTRY SYSTEM].)
9	Can the ID number be updated? (See TRANSMITTER ID CODE REGISTRATION [KEYLESS ENTRY SYSTEM].)	Yes	Troubleshooting completed.
9		No	Verify the malfunction, then go to Step 1 if it recurs.