P1610

DTC P1610 NON-IMMOBILIZER-EMS CONNECTED TO AN IMMOBILIZER

Component Location:

GENERAL DESCRIPTION
The immobilizer system consists of a passive challenge-response (mutual authentication) transponder inside the key head, the encoded SMARTRA3 unit/key and the EMS can decode the secret code stored in the SMARTRA3. The EMS communicates the encoded messages to the SMARTRA3 via a dedicated communication line and confirms the key with the SMARTRA3.

The EMS carries out the immobilizer function, the SMARTRA3 management and the key management. The immobilizer function is the unlocking of EMS only after detection of a valid ignition key/the SMARTRA3 and the locking of EMS after switching off the engine.

The EMS related to immobilizer has the 3 kinds of software. At the first IGN on, the EMS concludes the software of each option (smart key, non-encoded SMARTRA3, encoded SMARTRA3) by communication. It is called "The auto detection for EMS".

The EMS keeps the previous option before being neural when it is setted to each option.

DTC DESCRIPTION
The PCM/ECM sets DTC P1610 if Non Immobilizer EMS is installed on vehicle equipped with Immobilizer.

DTC Detecting Condition:

Diagnostic Circuit Diagram:

MONITOR SCANTOOL DATA
1. Check status
1. IGN "ON" & Engine "OFF"
2. Monitor the "ECM Status" Parameter on the Scantool.

Specification : "LEARNT"






3. Has the ECM been learnt?

YES - 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.

NO - Substitute with a known good ECM equipped with Immobilizer and perform the Key teaching procedure with scantool and check for proper operation.
If the problem is corrected, replace ECM and then go to "Verification of Vehicle Repair" procedure.

NOTE: If the EMS is only replaced using an existing key and SMARTRA3, after replacing the "virgin" or "neutral" EMS, reteaching is possible by key Learning mode with scanner.
When the same PIN used in existing vehicle is only inputted, the SMARTRA3 Learning and key Learnings are possible.

VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scantool and se let "Diagnostic Trouble Codes (DTCs)" mode and then clear DTC.
2. Operate the vehicle and monitor the DTC on the scantool.
3. Are any DTCs present?

YES - Go to the applicable troubleshooting procedure.

NO - System is performing to specification at this time.