KEYLESS ENTRY SYSTEM PRELIMINARY INSPECTION

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• Perform the following preliminary inspection before troubleshooting.

STEP

INSPECTION

ACTION

1

•  Is system an after-market one?

Yes

Perform troubleshooting according to after-market keyless entry system manual.

No

Go to next step.

2

•  Did customer activate keyless entry system when ignition switch was in LOCK position?

Yes

Go to next step.

No

•  Explain to customer that system does not work when ignition is in ON position.

•  Turn ignition switch to LOCK position, then go to next step.

3

The transmitter operation indicator light (LED) illuminates when any operation using the transmitter is performed.

Yes

Go to Step 7.

No

Go to the next step.

4

•  Visually inspect the transmitter battery for the following:
(See TRANSMITTER BATTERY REPLACEMENT.)

―  Battery direction (polarity)

―  Battery type (CR2025)

―  Corrosion, soiling, deformation of battery terminals (plus/minus terminals).

―  Contact malfunction between the battery terminal and battery when battery is inserted

•  Is there any malfunction?

Yes

Battery insertion direction, battery type problem:

•  Properly install the battery or replace the battery with a specified one (CR2025), then go to the next step.

Battery terminal malfunction:

•  Clean corrosion and soiling or repair the terminal, then go to the next step.

No

Go to Step 6.

5

•  Does the keyless entry system operate properly?

Yes

Go to Step 7.

No

Go to the next step.

6

Note

•  Use a new monitor battery (normal battery) or one from another vehicle which operates normally.

•  Replace the battery in all the transmitters with a monitor-use battery (normal battery).
(See TRANSMITTER BATTERY REPLACEMENT.)

•  Verify the operation of keyless entry system using all of the transmitters.

•  Does the keyless entry system operate normally?

Yes

Replace the battery, then go to Step 11.

(See TRANSMITTER BATTERY REPLACEMENT.)

No

Does not operate on all transmitters:

•  Go to Step 4 of troubleshooting NO. 3 TRANSMITTER ID CODE CANNOT BE REPROGRAMMED.

Does not operate on only one:

•  Replace the transmitter which does not operate, then go to Step 11.

7

•  Did the customer activate the transmitter within operative area (Within 1 m {3 ft} from area around vehicle)?

Yes

Go to the next step.

No

The system is normal.

Explain to the customer that the system does not work without the system operative area.

8

•  Did customer use keyless entry system in particular area, such as being near TV towers, power plants, power lines, or factories?

Yes

Attempt to lock/unlock doors with transmitter in non-interference area.

If system operates:

•  Area of operation is bad. Explain effect of outside interference on transmitter to customer.

If system does not operate:

•  Go to next step.

No

Go to next step.

9

•  Are any of the following after-market electrical parts on the vehicle?

―  Cellular phone

―  Radio-wave equipment

―  Remote engine starter

―  TV, etc.

Yes

Disconnect after-market electrical part connectors and attempt to lock/unlock doors with transmitter.

If system operates:

•  After-market electrical parts are interfering with keyless entry system.

If system does not operate:

•  Go to next step.

No

Go to next step.

10

•  Perform on-board diagnostic function.
(See ON-BOARD DIAGNOSTIC FUNCTION.)

•  Does on-board diagnostic function work?

Yes

Go to next step.

No

•  Go to Step 1 of NO. 1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE.

•  Go to Step 1 of NO. 2 ALL ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE.

11

•  Attempt to reprogram transmitter ID code.

•  Can transmitter ID code be reprogrammed?

Yes

System is normal now.

No

Go to Step 1 of troubleshooting NO. 3 TRANSMITTER ID CODE CANNOT BE REPROGRAMMED.

STEP	INSPECTION		ACTION
1	• Is system an after-market one?	Yes	Perform troubleshooting according to after-market keyless entry system manual.
1	• Is system an after-market one?	No	Go to next step.
2	• Did customer activate keyless entry system when ignition switch was in LOCK position?	Yes	Go to next step.
2		No	• Explain to customer that system does not work when ignition is in ON position. • Turn ignition switch to LOCK position, then go to next step.
3	The transmitter operation indicator light (LED) illuminates when any operation using the transmitter is performed.	Yes	Go to Step 7.
3		No	Go to the next step.
4	• Visually inspect the transmitter battery for the following: (See TRANSMITTER BATTERY REPLACEMENT.) ― Battery direction (polarity) ― Battery type (CR2025) ― Corrosion, soiling, deformation of battery terminals (plus/minus terminals). ― Contact malfunction between the battery terminal and battery when battery is inserted • Is there any malfunction?	Yes	Battery insertion direction, battery type problem: • Properly install the battery or replace the battery with a specified one (CR2025), then go to the next step. Battery terminal malfunction: • Clean corrosion and soiling or repair the terminal, then go to the next step.
4		No	Go to Step 6.
5	• Does the keyless entry system operate properly?	Yes	Go to Step 7.
5	• Does the keyless entry system operate properly?	No	Go to the next step.
6	Note • Use a new monitor battery (normal battery) or one from another vehicle which operates normally. • Replace the battery in all the transmitters with a monitor-use battery (normal battery). (See TRANSMITTER BATTERY REPLACEMENT.) • Verify the operation of keyless entry system using all of the transmitters. • Does the keyless entry system operate normally?	Yes	Replace the battery, then go to Step 11. (See TRANSMITTER BATTERY REPLACEMENT.)
6		No	Does not operate on all transmitters: • Go to Step 4 of troubleshooting NO. 3 TRANSMITTER ID CODE CANNOT BE REPROGRAMMED. Does not operate on only one: • Replace the transmitter which does not operate, then go to Step 11.
7	• Did the customer activate the transmitter within operative area (Within 1 m {3 ft} from area around vehicle)?	Yes	Go to the next step.
7		No	The system is normal. Explain to the customer that the system does not work without the system operative area.
8	• Did customer use keyless entry system in particular area, such as being near TV towers, power plants, power lines, or factories?	Yes	Attempt to lock/unlock doors with transmitter in non-interference area. If system operates: • Area of operation is bad. Explain effect of outside interference on transmitter to customer. If system does not operate: • Go to next step.
8		No	Go to next step.
9	• Are any of the following after-market electrical parts on the vehicle? ― Cellular phone ― Radio-wave equipment ― Remote engine starter ― TV, etc.	Yes	Disconnect after-market electrical part connectors and attempt to lock/unlock doors with transmitter. If system operates: • After-market electrical parts are interfering with keyless entry system. If system does not operate: • Go to next step.
9		No	Go to next step.
10	• Perform on-board diagnostic function. (See ON-BOARD DIAGNOSTIC FUNCTION.) • Does on-board diagnostic function work?	Yes	Go to next step.
10		No	• Go to Step 1 of NO. 1 ONE OR MORE ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE. • Go to Step 1 of NO. 2 ALL ON-BOARD DIAGNOSTIC FUNCTIONS INOPERATIVE.
11	• Attempt to reprogram transmitter ID code. • Can transmitter ID code be reprogrammed?	Yes	System is normal now.
11		No	Go to Step 1 of troubleshooting NO. 3 TRANSMITTER ID CODE CANNOT BE REPROGRAMMED.