Headlight Leveling Motor Input Test
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 Honda Odyssey, 2016 Honda Odyssey, 2015 Honda Odyssey, 2014 Honda Odyssey, and 2013 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Before testing, make sure the No. D21 (7.5 A) fuse in the passenger's under-dash fuse/relay box.
- When both motors do not operate, do the Headlight Leveling Control Unit input test (see HEADLIGHT LEVELING CONTROL UNIT INPUT TEST/REPLACEMENT ) first.
- Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
- Turn the ignition switch to LOCK (0).
- Disconnect the 3P connector (A) from the headlight leveling motor (B).
- Inspect the connector and socket terminals to be sure they are all making good contact.
- If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
- If the terminals are OK, go to step 4.
- With the connector still disconnected, do the following input tests:
- If any tests indicate a problem, find and correct the cause, then recheck the system.
- If all the input tests prove OK, replace the headlight leveling motor (see HEADLIGHT LEVELING MOTOR REPLACEMENT
).HEADLIGHT LEVELING CONTROL UNIT TEST RESULT
Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 1 YEL Ignition switch ON (II) Check for continuity between headlight leveling control unit 16P connector terminal No. 6: There should be continuity. - Poor ground (G403) or an open in the ground wire
- Faulty headlight leveling control unit
- An open or high resistance in the wire
3 GRN Ignition switch ON (II) Measure the voltage to ground: There should be battery voltage. - Faulty headlight leveling control unit
- An open or high resistance in the wire
2 BRN Ignition switch ON (II) Measure the voltage to ground: There should be about 2-11 V. - Faulty headlight leveling control unit
- An open or high resistance in the wire