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)
After insert the fob into the fob holder, press SSB button. Then, the communication state between the fob and the immobilizer is inputted to PDM.
*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.)
This code is outputted when the immobilizer data circuit is shorted to ground.
(In this case, it is not possible to get authorization although the fob is in the holder.)
Item | Detecting Condition | Possible Cause |
DTC Strategy | ● Immobilizer data line check (by voltage monitoring) | ● Short to ground in immobilizer data circuit |
Enable Conditions | ● The communication state between the fob and the fob holder when SSB button is pushed. (The fob is in the holder.) | |
Threshold Value | ● Short to ground in immobilizer data circuit (2V and below) | |
Diagnostic Time | ● Immediately | |
DTC Erasing Time | ● DTC is erased immediately after trouble fixed. (After communication recovery) |
Fig 1) IMMO_CLOCK & IMMO_DATE signal waveform
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 PDM's connector or was repaired and PDM 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. |
IG "OFF" and connect GDS.
IG "ON" and select "Current Data" menu.
Check the service data of SMART KEY HOLDER INSERT SIGNAL.
Specification : INSERT (When the fob is inserted in the holder.)
Is the service data within specifications?
| ▶ 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. |
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 next procedure. |
IG "ON" & ENG "OFF".
Disconnect the connectors of IPM,PDM,ESCL.
Measure resistance between IMMO TX terminal and chassis ground.
Specification : ∞ Ω
Is the measured resistance within specifications?
| ▶ Substitute with a known - good PDM and check for proper operation. If the problem is corrected, replace the unit and go to "Verification of Vehicle Repair" procedure. ▶ Substitute with a known - good fob holder and check for proper operation. If the problem is corrected, replace the unit and go to "Verification of Vehicle Repair" procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair". |
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. |
