KEYLESS CONTROL MODULE INSPECTION
- Measure the voltage or inspect for continuity according to the Terminal Voltage Table (Reference). If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under "Inspection item(s)" and related wiring harnesses.
- If the system does not work properly even though the inspection items or related wiring harnesses do not have any malfunction, perform «SYMPTOM TROUBLESHOOTING (KEYLESS ENTRY SYSTEM)»(ref-345302)
Scheme 27
Scheme 27: Terminal Voltage Table (Reference)
| Terminal | Signal name | Connected to | Measured condition | Voltage (V)/Continuity | Inspection item(s) |
|---|
| A | Power supply | PJB | Under any condition | B+ | PJB (See PASSENGER JUNCTION BOX (PJB) INSPECTION .) Related wiring harnesses |
| C | Data | PJB | Under any condition: Inspect the wiring harness between the keyless control module and PJB terminal J-04 F for continuity. | Continuity detected | PJB (See PASSENGER JUNCTION BOX (PJB) INSPECTION .) transmitter (See TRANSMITTER BATTERY INSPECTION ). Related wiring harnesses |
| E | GND | Body ground | Under any condition: Inspect for continuity to ground. | Continuity detected | GND |
CONNECTOR TERMINAL REFERENCE
Scheme 28
Scheme 28: TRANSMITTER BATTERY REPLACEMENT
Scheme 29
Scheme 30
- Insert a small flathead screwdriver into the slot and gently pry open the transmitter.
- Press the portion of the battery indicated by A and remove the battery.
- Install a new battery (CR2025) into the front portion of the holder with the positive pole (+) facing up. Press on the B portion of the battery to set the battery.
- Align the front and back covers and snap the transmitter shut. Battery specification Lithium CR2025 x 1 NOTE: The batteries will last about 2 years when used 10 times a day.
Scheme 31
Scheme 31: Retractable Key Type
Scheme 32
Scheme 33
Scheme 34
- Insert a small screwdriver into the slot and push the tab to remove the key from the transmitter.
- Insert a small screwdriver into the slot and gently pry open the transmitter.
- Remove the battery.
- Put in the new battery (CR1620) with the positive pole (+) facing down. Battery Specification Lithium CR1620 x 1 NOTE: The battery will last about 2 years when used 10 times a day.
- Align the front and back covers and snap the transmitter shut.
- Install the key to the transmitter.
| CAUTION | When attaching the key to the transmitter, squeeze them together until a click is heard. If the key is not securely attached it will separate from the transmitter. |
Scheme 35
TRANSMITTER BATTERY INSPECTION
| CAUTION | Since the battery voltage does not drop fully if the button is pushed for only 4 s or less, sufficient battery voltage cannot be determined. Always push the button for 5 s. |
Note. A correct measurement cannot be obtained if the battery temperature is low. Make sure the battery is at 18°C {64°F} or more for at least 30 min before reinspecting if a measurement value is under the standard voltage.
Scheme 36
Scheme 37
- Remove the transmitter cover.
- Apply the ohmmeter leads to the positions as indicated in the figure.
- While pressing the battery as shown in the figure, press the LOCK and UNLOCK buttons on the transmitter at the same time to start measurement of the voltage.
- Release the buttons after 5 s.
- Verify that the minimum voltage is the standard voltage or more for 10 s after starting measurement. If the voltage is under the standard voltage, replace the battery. Standard voltage 2.7 V
