how to fix Honda CR-V Fifth Generation (2017-2022) door ajar sensor staying on

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the vehicle battery to prevent any electrical shorts.
• Tools Required:
  • OBD-II scanner
  • Multimeter
  • Socket set
  • Screwdriver set

2. Inspect and Clean Door Switches

• Step 1: Locate the door switches, typically found in the door jamb.
• Step 2: Remove any covers or trims to access the switches using a screwdriver.
• Step 3: Clean the switches with electrical cleaner to remove dirt and debris that may cause them to malfunction.
• Step 4: Reinstall any covers or trims after cleaning.

3. Replace Faulty Door Switch

• Step 1: If the switch is defective, remove the switch from its housing by unscrewing it or unclipping it.
• Step 2: Disconnect the wiring harness from the old switch.
• Step 3: Connect the new door switch to the wiring harness.
• Step 4: Secure the new switch in place and reattach any covers.

4. Verify Wiring Integrity

• Step 1: Visually inspect and repair any damaged wiring or connectors found during the diagnostic step.
• Step 2: Use a multimeter to ensure continuity in the wiring between the switch and the body control module.

5. Reconnect Battery and Test

• Step 1: Reconnect the vehicle battery.
• Step 2: Check the functionality of each door switch by opening and closing each door to ensure the light goes off when closed.
• Step 3: Clear any diagnostic codes using the OBD-II scanner if applicable.