DTC B1041:14 [AUTO LEVELING CONTROL MODULE]

id090277017100

Caution
•  Vehicle specifications differ depending on the vehicle identification number (VIN).
Type A VIN:
?  JM0 TC2WLA*# 100001—299999
?  JM0 TC4WLA*# 100001—299999
?  JMZ TB5WYA*# 100001—599999
?  JMZ TB6WYA*# 100001—599999
?  JMZ TBEWYA*# 100001—599999
?  JMZ TBFWYA*# 100001—599999
?  JM7 TC2WLA*# 100001—299999
?  JM7 TC4WLA*# 100001—299999
?  JM5 TCAWY**# 100001—299999
?  JM6 TC2WLA*# 100001—299999
?  JM6 TC4WLA*# 100001—299999
Type B VIN:
?  JM0 TC2WLA*# 300001—399999
?  JM0 TC4WLA*# 300001—399999
?  JMZ TB5WYA*# 600001—
?  JMZ TB6WYA*# 600001—
?  JMZ TBEWYA*# 600001—699999
?  JMZ TBFWYA*# 600001—699999
?  JM7 TC2WLA*# 300001—399999
?  JM7 TC4WLA*# 300001—399999
?  JM5 TCAWY**# 300001—399999
?  JM6 TC2WLA*# 300001—399999
?  JM6 TC4WLA*# 300001—399999
Type C VIN:
?  JM0 TC2WLA*# 400001—
?  JM0 TC4WLA*# 400001—
?  JM5 TCAWY**# 400001—
?  JM6 TC2WLA*# 400001—
?  JM6 TC4WLA*# 400001—
?  JM7 TC2WLA*# 400001—
?  JM7 TC4WLA*# 400001—
?  JMZ TBEWYA*# 700001—
?  JMZ TBFWYA*# 700001—

Description

Headlight leveling actuator circuit malfunction
Detection condition
•  Headlight leveling actuator circuit voltage of 3.2 V or less is detected for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe
•  The headlight leveling actuator is stopped at the position when the malfunction is determined.
Possible cause
•  Front combination light (LH) connector or terminal malfunction
•  Front combination light (RH) connector or terminal malfunction
•  Auto leveling control module connector or terminal malfunction
•  Short to ground in wiring harness between the following terminals:
?  Auto leveling control module terminal P—Front combination light (LH) terminal I
?  Auto leveling control module terminal O—Front combination light (LH) terminal M
?  Auto leveling control module terminal P—Front combination light (RH) terminal I
?  Auto leveling control module terminal O—Front combination light (RH) terminal M
•  Open circuit in wiring harness between the following terminals:
?  Auto leveling control module terminal P—Front combination light (LH) terminal I
?  Auto leveling control module terminal O—Front combination light (LH) terminal M
?  Auto leveling control module terminal P—Front combination light (RH) terminal I
?  Auto leveling control module terminal O—Front combination light (RH) terminal M
•  Headlight leveling actuator malfunction
•  Auto leveling control module malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT FRONT COMBINATION LIGHT (LH) CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the negative battery terminal.
•  Disconnect the front combination light (LH) connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 7.
2
INSPECT FRONT COMBINATION LIGHT (RH) CONNECTOR CONDITION
•  Disconnect the front combination light (RH) connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 7.
3
INSPECT AUTO LEVELING CONTROL MODULE CONNECTOR CONDITION
•  Disconnect the auto leveling control module connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 7.
4
INSPECT HEADLIGHT LEVELING ACTUATOR CIRCUIT FOR SHORT TO GROUND
•  Verify that the front combination light (LH), front combination light (RH) and auto leveling control module connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
?  Front combination light (LH) terminal I
?  Front combination light (LH) terminal M
?  Front combination light (RH) terminal I
?  Front combination light (RH) terminal M
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Auto leveling control module terminal P—Front combination light (LH) terminal I
•  Auto leveling control module terminal O—Front combination light (LH) terminal M
•  Auto leveling control module terminal P—Front combination light (RH) terminal I
•  Auto leveling control module terminal O—Front combination light (RH) terminal M
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to ground.
Go to Step 7.
No
Go to the next step.
5
INSPECT HEADLIGHT LEVELING ACTUATOR CIRCUIT FOR OPEN CIRCUIT
•  Verify that the front combination light (LH), front combination light (RH) and auto leveling control module connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
?  Auto leveling control module terminal P—Front combination light (LH) terminal I
?  Auto leveling control module terminal O—Front combination light (LH) terminal M
?  Auto leveling control module terminal P—Front combination light (RH) terminal I
?  Auto leveling control module terminal O—Front combination light (RH) terminal M
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  Auto leveling control module terminal P—Front combination light (LH) terminal I
•  Auto leveling control module terminal O—Front combination light (LH) terminal M
•  Auto leveling control module terminal P—Front combination light (RH) terminal I
•  Auto leveling control module terminal O—Front combination light (RH) terminal M
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 7.
6
INSPECT HEADLIGHT LEVELING ACTUATOR OPERATION
•  Perform the headlight leveling actuator operation check mode.
•  Does the headlight leveling actuator operate normally?
Yes
Go to the next step.
No
Replace the front combination light, then go to the next step.
(See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)
7
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Always reconnect all disconnected connectors.
•  Connect the negative battery terminal.
•  Clear the auto leveling control module DTCs using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 5 s or more.
•  Retrieve the auto leveling control module DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the auto leveling control module, then go to the next step.
No
Go to the next step.
8
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [AUTO LEVELING CONTROL MODULE].)
No
DTC troubleshooting completed.