4.Connect the oil pressure switch wire harness.
5. Turn the ignition switch ON. Check that the warning lamp lights up. If the warning lamp doesn't light, test the wire
harness.
BRAKE FLUID LEVEL WARNING SWITCH
1.Remove the connector (A) from the switch located at the brake fluid reservoir (B).
2. Verify that continuity exists between switch terminals 1 and 2 while pressing the switch (float) down with a rod.
BRAKE FLUID LEVEL WARNING LAMP
1.Ignition "ON"
2. Release the parking brake.
3. Remove the connector from the brake fluid level warning switch.
4. Ground the connector at the harness side.
5. Verify that the warning lamp lights.
PARKING BRAKE SWITCH
The parking brake switch is a push type. It is located at the side of the parking brake pedal.
1. Check that there is continuity between the terminal and switch body with the switch (A) ON.
2007 > 2.7L V6 GASOLINE >
DESCRIPTION
The immobilizer system will disable the vehicle unless the proper ignition key is used, in addition to the currently
available anti- theft systems such as car alarms, the immobilizer system aims to drastically reduce the rate of auto
theft.
1. SMARTRA type immobilizer
a. The SMARTRA system consists of a transponder located in the ignition key, an antenna coil, a SMARTRA unit,
an indicator light and the PCM(ECM).
b. The SMARTRA communicates to the PCM(ECM) (Engine Control Module) via a dedicated communications line.
Since the vehicle engine management system is able to control engine mobilization, it is the most suitable unit
to control the SMARTRA.
c. When the key is inserted in the ignition and turned to the ON position, the antenna coil sends power to the
transponder in the ignition key. The transponder then sends a coded signal back through the SMARTRA unit to
the PCM(ECM).
d. If the proper key has been used, the PCM(ECM) will energize the fuel supply system. The immobilizer indicator
light in the cluster will simultaneously come on for more than five seconds, indicating that the SMARTRA unit
has recognized the code sent by the transponder.
e. If the wrong key has been used and the code was not received or recognized by the PCM(ECM) the indicator
light will continue blinking for about five seconds until the ignition switch is turned OFF.
f. If it is necessary to rewrite the PCM(ECM) to learn a new key, the dealer needs the customer's vehicle, all its
keys and the Scan tool (pro) equipped with an immobilizer program card. Any key that is not learned during
rewriting will no longer start the engine.
g. The immobilizer system can store up to four key codes.
h. If the customer has lost his key, and cannot start the engine, contact motor service station.
COMPONENTS OPERATIONS
PCM (Power Train Control Module)
1. The PCM(ECM) carries out a check of the ignition key using a special encryption algorithm, which is programmed
into the transponder as well as the PCM(ECM) simultaneously. Only if the results are equal, the engine can be
started. The data of all transponders, which are valid for the vehicle, are stored in the PCM(ECM).
2007 > 2.7L V6 GASOLINE >
DIAGNOSIS OF IMMOBILIZER FAULTS
a.Communication between the PCM(ECM) and the SMARTRA.
b. Function of the SMARTRA and the transponder.
c. Data (stored in the PCM(ECM) related to the immobilizer function.
The following table shows the assignment of immobilizer related faults to each type:
Immobilizer Related Faults Fault typesDiagnostic codes
PCM(ECM) fault a.Non- Immobilizer- EMS connected to an Immobilizer P1610
Transponder key fault a.
Transponder not in password mode
b. Transponder transport data has been changed. P1674
(Transponder status error)
Transponder key fault a.Transponder programming error P1675
(Transponder programming error)
SMARTRA fault a.Invalid message from SMARTRA to PCM(ECM) P1676
(SMARTRA message error)
SMARTRA fault a.
No response from SMARTRA
b. Antenna coil error
c. Communication line error (Open/Short etc.)
d. Invalid message from SMARTRA to PCM(ECM) P1690
(SMARTRA no response)
Antenna coil fault a.Antenna coil open/short circuit P1691
(Antenna coil error)
Immobilizer indicator lamp
fault a.
Immobilizer indicator lamp error (Cluster) P1692
(Immobilizer lamp error)
Transponder key fault a.
Corrupted data from transponder
b. More than one transponder in the magnetic field
(Antenna coil)
c. No transponder (Key without transponder) in the
magnetic field (Antenna coil) P1693
(Transponder no response error/invalid response)
PCM(ECM) fault a.
Request from PCM(ECM) is invalid
(Protocol layer violation- Invalid request, check sum
error etc.) P1694
(PCM(ECM) message error)
PCM(ECM) internal
permanent memory
(EEPROM) fault a.
PCM(ECM) internal permanent memory (EEPROM)
fault
b. Invalid write operation to permanent memory
(EEPROM) P1695
(PCM(ECM) memory error)
Invalid key fault a.
Virgin transponder at PCM(ECM) status "Learnt"Learnt
(Invalid) Transponder at PCM(ECM) status
"Learnt"(Authentication fail) P1696
(Authentication fail)
Hi - Scan fault a.Hi - Scan message error P1697
Locked by timer a.
Exceeding the maximum limit of Twice IGN ON ( ⊇ 32
times) P1699
(Twice IG ON over trial)
IMMOBILIZER (SMARTRA) DTC LIST No. Fault code Monitor strategy description GasolineDiesel
1 P1674 Transponder status error O-
2 P1675 Transponder programming error OO
