Keyfob Battery And Function

KEYFOB BATTERY AND FUNCTION

Description

The following functions are available when having and carrying the keyfob.
- Door lock/unlock
- Panic mode (horn and headlamp operation)
Remote control entry function and panic alarm function are available when operating the remote buttons.


Component Function Check

NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II
User Guide for additional information.
- Check keyfob relative signal strength
- Confirm vehicle antenna signal strength

1. CHECK FUNCTION

With CONSULT
Check remote keyless entry receiver KEYLESS LOCK, KEYLESS UNLOCK, and KEYLESS PANIC in Data
Monitor mode with CONSULT.





Is the inspection result normal?
YES- Keyfob is OK.
NO- .


Diagnosis Procedure

NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II
User Guide for additional information.
- Check keyfob relative signal strength
- Confirm vehicle antenna signal strength

1. CHECK KEYFOB FUNCTION






Check keyfob function using Signal Tech II Tool J-50190 or Remote
Keyless Entry Tester J-43241 (shown).
Does the test pass?
YES- Keyfob is OK.
NO- GO TO 2

2. CHECK KEYFOB COMPONENTS






1.Remove the screw (A).
2.Insert a small screwdriver into the slit of the corner (B) and twist it to separate the upper part from the power part. Use a cloth to protect the casing.

CAUTION:
- Do not touch the circuit board or battery terminal.
- The keyfob is water-resistant. However, if it does get wet, immediately wipe it dry.
3.Remove the keyfob battery.

CAUTION:
- Keep dirt, grease, and other foreign materials off the electrode contact area.
4.Visually inspect keyfob internal components.
Is the inspection result normal?
YES- GO TO 3
NO- Repair or replace malfunctioning parts.

3. CHECK KEYFOB BATTERY






Check by connecting a resistance (approximately 300 Ohms) so that the current value becomes about 10 mA.
Standard: Approx. 2.5 - 3.0V
Is the measurement value within specification?
YES- Keyfob battery is OK. Check remote keyless entry receiver. Remote Keyless Entry Receiver.
NO- GO TO 4

4. REPLACE KEYFOB BATTERY






1.Replace the keyfob battery with a new one (CR1620 or equivalent).

CAUTION:
- When replacing battery, keep dirt, grease, and other foreign materials off the electrode contact area.
- Make sure that the + side faces the bottom of the case.
2.Align the tips of the upper and lower parts, and then push them together until it is securely closed.
3.After replacing the battery, check that all keyfob functions work properly.
Is the inspection result normal?
YES- Keyfob is OK.
NO- Check remote keyless entry receiver. Remote Keyless Entry Receiver.