Headlight Leveling Motor Input Test
NOTE: Before input test, check the No. 5 (10 A) fuse in the under-dash fuse/relay box.
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, make these input tests at the connector.
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK,
replace the headlight leveling motor.
With HID:
Do the headlight leveling control unit input test.
Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
3
BRN
*1
Under all conditions
Check for continuity to ground: There should be continuity.
Poor ground (G301)
Faulty headlight leveling control unit
An open in the wire
BLK
*2
Under all conditions
Check for continuity to ground: There should be continuity.
Poor ground (G202, G401)
An open in the wire
1
PUR
*1
Ignition switch ON (II)
Measure the voltage to ground: There should be battery voltage.
Faulty headlight leveling control unit
An open in the wire
LT GRN
*2
Ignition switch ON (II)
Measure the voltage to ground: There should be battery voltage.
An open in the wire
2
LT BLU
*1
Ignition switch ON (II)
Measure the voltage to ground: There should be about 3−13 V.
Faulty headlight leveling control unit
An open in the wire
PUR
*2
Headlight leveling switch in 3 position
Measure the resistance between the No. 2 terminal and body ground: There should be about 2.9 kΩ [3.1 kΩ].
Poor ground (G501)
Faulty headlight leveling switch
An open in the wire
*1:
With HID
*2:
Without HID
[ ]:
KE and KG models
NOTE: Before input test, check the No. 5 (10 A) fuse in the under-dash fuse/relay box.
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, make these input tests at the connector.
If any test indicates a problem, find and correct the cause, then recheck the system.
If all the input tests prove OK,
replace the headlight leveling motor.
With HID:
Do the headlight leveling control unit input test.
Cavity
Wire
Test condition
Test: Desired result
Possible cause if desired result is not obtained
3
BRN
*1
Under all conditions
Check for continuity to ground: There should be continuity.
Poor ground (G301)
Faulty headlight leveling control unit
An open in the wire
BLK
*2
Under all conditions
Check for continuity to ground: There should be continuity.
Poor ground (G202, G401)
An open in the wire
1
PUR
*1
Ignition switch ON (II)
Measure the voltage to ground: There should be battery voltage.
Faulty headlight leveling control unit
An open in the wire
LT GRN
*2
Ignition switch ON (II)
Measure the voltage to ground: There should be battery voltage.
An open in the wire
2
LT BLU
*1
Ignition switch ON (II)
Measure the voltage to ground: There should be about 3−13 V.
Faulty headlight leveling control unit
An open in the wire
PUR
*2
Headlight leveling switch in 3 position
Measure the resistance between the No. 2 terminal and body ground: There should be about 2.9 kΩ [3.1 kΩ].
Poor ground (G501)
Faulty headlight leveling switch
An open in the wire
*1:
With HID
*2:
Without HID
[ ]:
KE and KG models
