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Component Location: P1610 Non-Immobilizer-EMS Connected To An Immobilizer General Information

The document provides information about the P1610 diagnostic trouble code (DTC) related to a Non-Immobilizer Engine Management System (EMS) connected to an Immobilizer. It describes the immobilizer system's operation, the conditions under which the P1610 code is set, and the diagnostic procedures to verify and repair the issue. Additionally, it outlines the steps for monitoring the EMS status and ensuring proper key learning and system functionality after repairs.

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Henry Silva
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290 views3 pages

Component Location: P1610 Non-Immobilizer-EMS Connected To An Immobilizer General Information

The document provides information about the P1610 diagnostic trouble code (DTC) related to a Non-Immobilizer Engine Management System (EMS) connected to an Immobilizer. It describes the immobilizer system's operation, the conditions under which the P1610 code is set, and the diagnostic procedures to verify and repair the issue. Additionally, it outlines the steps for monitoring the EMS status and ensuring proper key learning and system functionality after repairs.

Uploaded by

Henry Silva
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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MOHAVE/BORREGO(HM) > 2010 > G 4.

6 DOHC > Immobilizer > IMMO(Bosch) > P1610


Non-Immobilizer-EMS Connected to an Immobilizer

P1610 Non-Immobilizer-EMS Connected to an Immobilizer > General Information


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 carries out the immobilizer function, the SMATRA3 management and the key management. The immobilizer function is
the unlocking of EMS only after detection of a valid ignition key /the SMATRA3 and the locking of EMS after switching off the engine.
The EMS communicates the encoded messages to the SMARTRA3 via a dedicated communication line and confirms the key with
the SMARTRA3.
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 autodection for EMS”The EMS
keeps the previous option before being neutral 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


Item Detecting Condition Possible Cause
DTC Strategy •-

Enable Conditions • IG ON

Threshold value • Non Immobilizer PCM/ECM connected • Invalid PCM/ECM

Detecting time • Immediately

FAIL SAFE •-

Diagnostic Circuit Diagram


P1610 Non-Immobilizer-EMS Connected to an Immobilizer > Scantool Diagnostics
Monitor Scantool Data
1. Check status
(1) IGN "ON" & Engine "OFF"
(2) Monitor the "ECM Status" Parameter on the Scantool.

Specification : 'LEARNT'

Fig.1) This data show that 3 keys have been taught, ECU has been learnt, Key in key cylinder has been learnt and
SMARTRA3 has been learnt.
(3) Has the ECM been learnt ?
▶ 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.
▶ Substitute with a 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.

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 of scanner.When the same PIN used in
existing vehicle is only inputted, the SMARTRA3 Learning and key Learnings are possible.

P1610 Non-Immobilizer-EMS Connected to an Immobilizer > Verification of Vehicle Repair


Verification of Vehicle Repair
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scantool and select "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?
▶ Go to the applicable troubleshooting procedure.

▶ System is performing to specification at this time.

P1610 Non-Immobilizer-EMS Connected to an Immobilizer > 회로도 입력

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