Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

No. 1 Keyless Entry System Does Not Function (Door)

Flowchart No.1 Symptom Keyless entry system does not function (Door)

Possible cause
^ Burnt ROOM 15A fuse
^ Damaged keyless unit
^ Damaged CPU
^ Damaged transmitter
^ Open or short circuit in wiring harness
^ Poor connection of connector

Step 1

Fuse Inspection:

Action Chart:

Check the ROOM 15A fuse in the fuse block.

Step 2
1. Open the trunk lid.

Voltmeter Connection:

Action Chart:

2. Measure the voltage at the (L/R) terminal wire of the keyless unit connector in the trunk compartment.

Step 3
1. Disconnect the keyless unit connector.

Ohmmeter Connection:

Action Chart:

2. Check for continuity between the (B) terminal wire and ground.

Step 4

Voltmeter Connection:

Action Chart:

Measure the voltage at terminal wire 2R (R/Y) of the CPU connector.

Step 5

Voltmeter Connection:

Action Chart:

Measure the voltage at terminal E (R/Y) wires of the keyless unit connectors.

Transmitter Function:

Action Chart:

Step 6
1. Replace the transmitter batteries.
2. Press the LOCK or UNLOCK button.