General Description

Once IPM receives left headlamp low switch working signal, it sends the signal to FAM by CAN communition. FAM turns on left headlamp low.

DTC Description

This code is set when left headlamp low circuit is shotted to ground for more than 150ms during left headlamp low operating.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

Load Mornitoring

Poor connection

Short to ground in left headlamp low circuit

Faulty left headlamp low

Faulty FAM

Enable Conditions

IG KEY ON.

Threshold Value

It is abnormal if output voltage is 0V.

Diagnostic Time

Immediately

DTC Erasing Time

DTC is erased immediately after trouble fixed.

Diagnostic Circuit Diagram
Scantool Data Analysis
1.

Connect GDS.

2.

IG "ON" and engine "OFF".

3.

Select "DTC Analysis" mode.

4.

After erase DTC, keep the vehicle condition within "the enable conditions" (Refer to "DTC Detecting Condition" table).

5.

Is the same DTC occurred again?

▶ Go to next procedure.

▶ Fault is intermittent caused by poor contact in the sensor's and/or FAM's connector or was repaired and FAM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

■ Check left headlamp low
6.

IG "OFF" and Connect GDS.

7.

IG "ON" & ENG "OFF"

8.

Select "Current Data" mode.

9.

Execute "left headlamp low" test.

10.

Is left headlamp low working normal ?

▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

▶ Go to next procedure.

Terminal and Connector Inspection
1.

Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

2.

Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

3.

Has a problem been found?

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.

▶ Go to "Left Headlamp High Circuit Inspection" procedure.

Left Headlamp High Circuit Inspection
■ Check short to ground in harness
1.

IG "OFF", disconnect battery (-) terminal.

2.

Disconnect FAM, Left Headlamp High connector.

3.

Measure resistance between the Left Headlamp High terminal of FAM harness connector and chassis ground.

Specification: infinity

4.

Is the measured resistance within specification?

▶ Substitute with a known - good FAM and check for proper operation.

If the problem is corrected, replace the FAM and go to "Verification of Vehicle Repair" procedure.

▶ Repair short to ground in circuit of Left Headlamp Low, and go to "Verification of Vehicle Repair" procedure.

Verification of Vehicle Repair

After a repair, it is essential to verify that the fault has been corrected.

1.

Connect scan tool and select "DTC Analysis" mode.

2.

Clear the DTCs and Operate the vehicle within DTC Enable conditions in General information.

3.

Is any DTC outputted again?

▶ Go to the applicable troubleshooting procedure.

▶ System performing to specification at this time.

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