4.
After erase DTC, keep the vehicle condition within "the enable conditions" (Refer to "DTC Detecting Condition" table).
This is DTC which is related with communication error between IPM and other units.
(※ Control Units : IPM(Inter Panel Module), FAM(Front Area Module), PDM(Power Distribution Module), DDM(Drive Door Module), ADM(Assist Door Module), CLU(Cluster), PSM(Power Seat Module), SCM(Steering Control Module), RAM(Rear Area Module), SMK(Smart Key)
*¹ CAN (Controller Area Network) : CAN is serial bus communication type which links not only communication system but also control units each other.
*² LIN (Local Interconnect Network) : LIN is serial communication type which is used in electrical control system. (This is less expensive.)
IPM sets this DTC If IPM has received abnormal signal from MF Light SW for 2 sec., for instance, Both Auto light SW and Tail Lamp SW are inputted simultaneously.
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Check MF SW input status | ● MF light switch signal circuit ● Faulty MF light switch ● Faulty IPM |
Enable Conditions | ● IG KEY ON. | |
Threshold Value | ● - | |
Diagnostic Time | ● 2 seconds after failure occurs | |
DTC Erasing Time | ● DTC is erased immediately after trouble fixed (In case of the past error, perform DTC erasing procedure.) |
Connect GDS.
IG "ON" and engine "OFF".
Select "DTC Analysis" mode.
After erase DTC, keep the vehicle condition within "the enable conditions" (Refer to "DTC Detecting Condition" table).
Is the same DTC occurred again?
 | ▶ Go to next procedure. |
 | ▶ Fault is intermittent caused by poor contact in the sensor's and/or IPM's connector or was repaired and IPM 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. |
Connect GDS.
IG "ON" & ENG "OFF".
Select "Current Data" mode.
Check Operating Status of Head Light parameter.
Are all Head Lamp parameters normal ?
| ▶ Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Terminal and Connector Inspection" procedure. |
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.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
Has a problem been found?
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Signal Circuit Inspection" procedure. |
IG "OFF" and disconnect battery (-) terminal.
Disconnect MF SW and IPM connector.
Check resistance between one and another signal terminal of MF SW harness connector.
Specification : About ∞ Ω
Is the measured value within specification ?
| ▶ Substitute with a known - good IPM and check for proper operation. If the problem is corrected, replace the IPM and go to "Verification of Vehicle Repair" procedure. ▶ Substitute with a known - good MF switch and check for proper operation. If the problem is corrected, replace the MF switch and go to "Verification of Vehicle Repair" procedure. |
| ▶ Check short in signal harness of light SW, and then, go to 'Verification of Vehicle Repair" procedure. |
After a repair, it is essential to verify that the fault has been corrected.
Connect scan tool and select "DTC Analysis" mode.
Clear the DTCs and Operate the vehicle within DTC Enable conditions in General information.
Is any DTC outputted again?
| ▶ Go to the applicable troubleshooting procedure. |
| ▶ System performing to specification at this time. |
