L0432
DTC L0432: RLS RS Adaptation ErrorTROUBLE JUDGMENT
When the lighting control sensor is installed with the wrong procedure, DTC L0432 is stored by LIN.
TECHNICAL DESCRIPTION (COMMENT)
The lighting control sensor may have been installed with the wrong procedure.
- Incorrect installation procedure: Connect the connector before mounting the lighting control sensor onto the optical coupler of the windshield.
- Correct installation procedure: Mount the lighting control sensor onto the optical coupler of the windshield. Wipe the windshield surface thoroughly, and check that the surface is dry. Then, connect the connector.
TROUBLESHOOTING HINTS
- Lighting control sensor improperly installed
- Lighting control sensor (rain sensor) abnormal operation
DIAGNOSIS
Required Special Tools:
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicle Communication Interface (V.C.I.)
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
STEP 1. Using scan tool MB991958, Check whether the diagnostic trouble code is reset.
Disconnect the connector from the lighting control sensor, and connect the connector to the lighting control sensor again. Then, check again if the DTC is set to LIN.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958. Refer to "How to connect scan tool." How to Connect the Scan Tool (M.U.T.-III)
2. Disconnect the connector of lighting control sensor, and connect it again.
NOTE: When connecting the connector, follow the correct installation procedure.
3. Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
4. Check if DTC is set.
Q: Is the DTC set?
YES : Go to Step 2.
NO : The lighting control sensor is installed with the wrong procedure.
STEP 2. Lighting control sensor installation surface check
Visually check the presence of scratches or air bubbles [diameter of 5 mm (0.2 inch) or more] on the windshield to which the lighting control sensor is installed. In addition, visually check that the optical coupler is not broken and that the lighting control sensor can be installed.
Q: Is the check result normal?
YES : Go to Step 3.
NO : Replace the windshield.
STEP 3. Using scan tool MB991958, Check whether the diagnostic trouble code is reset.
Check again if the DTC is set to LIN.
1. Wipe the windshield surface of the lighting control sensor section thoroughly, and check that the surface is dry. Then, perform the lighting control sensor (rain sensor) adaptation. [Refer to - Lighting Control Sensor (Rain Sensor) Adaptation]. Programming and Relearning
2. Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
3. Check if DTC is set.
Q: Is the DTC set?
YES : Replace the lighting control sensor.
NO : The trouble can be an intermittent malfunction.