P1693
DTC P1693 TRANSPONDER NO RESPONSE ERROR / INVALID RESPONSEComponent Location:
GENERAL DESCRIPTION
During the key teaching procedure the transponder will be programmed with vehicle specific data. The vehicle specific data are written into the transponder memory. The write procedure is unique; therefore the content of transponder can never be modified or changed.
The data are a string of 9 bytes defined by vehicle manufacturer. The transponder memory is split into two strings called authenticator and key password After this programming the transponder memory is locked and the data (PIN code) cannot be read or changed respectively.
The transponder status changes from "virgin" to "learnt". Additionally every transponder includes a unique IDE (Identifier number) of 32 bit. Unique means that the IDE of all transponder is different from each other. The IDE is programmed by the transponder manufacturer and is a read-only value. The authenticator and the key password are not transferred from ECM to transponder or vice versa. Only the results from the encryption algorithm are transferred. It is almost impossible to calculate the vehicle specific data from the encryption result. For teaching of keys and special purposes the ECM is connected to the tester device.
When IG is ON, the coil supplies energy to the transponder which in turn accumulates energy in the condenser. Once the energy supply from the coil has stopped, using the stored energy in the condenser, the transponder transmits the ID CODE (stored within the ASIC).
DTC DESCRIPTION
This DTC is defined as Invalid Transponder Data, Transponder program error and Password mode invalid.
DTC Detecting Condition:
MONITOR SCANTOOL DATA
1. Ignition "ON" & Engine "OFF".
2. Connect Scan tool and clear the DTCs.
3. If the DTCs are retrieved again, monitor "CURRENT DATA" to check No. of Learnt key, ECM and KEY status.
4. Are both Key and ECM status learnt?
YES
- Fault is intermittent caused by poor contact in the SMARTRA's and/or ECM's connector or was repaired and ECM 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.
NO - Go to " W/Harness Inspection" procedure.
COMPONENT INSPECTION
1. Check Transponder
1. Ignition "ON" & Engine "OFF".
2. Perform neutral mode, key teaching and password teaching/changing. (Refer to "Reference Data in General Information")
NOTE: Be sure that PIN code is prepared before performing neutral mode.
3. Is the neutral, teaching and password teaching/changing mode completed?
YES - Go to "Check SMARTRA (BCM)" as below
NO
- Substitute with a known-good virgin Transponder and monitor CURRENT DATA.
- If the key status is displayed as "Virgin", replace Transponder.
- Perform key teaching mode (Refer to things to remember before a repair(2) in "Reference Data"
- Go to "Verification of Vehicle Repair" procedure.
2. Check SMARTRA (5CM)
1. Ignition "ON" & Engine "OFF".
2. Perform the Neutral, Teaching, and Password teaching/ changing mode according to 2. ECM neutralization, 3. Key Teaching Procedure, 4. Password teaching/Changing in "Reference Data" described in General Information
NOTE: Be sure that PIN code is prepared before performing neutral mode.
3. Is Key teaching completed?
YES - Go to "Check ECM" as below
NO - Substitute with a known-good SMARTRA (BCM) and check for proper operation. If the problem is corrected, replace SMARTRA (BCM) and Go to "Verification of Vehicle Repair" procedure.
NOTE: In case of faulty SMARTRA (BCM), there are no special procedures required. A new SMARTRA (BCM)) device simply replaces the old one. (There are no transponder-related data stored in this device.)
3. Check ECM
1. Ignition "ON" & Engine "OFF".
2. Perform Key Teaching Procedure in "Reference Data" described in General Information.
3. Is the Key teaching completed?
YES - Go to "Verification of Vehicle Repair" procedure.
NO - Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and then go to "Verification of Vehicle Repair" procedure.
NOTE:
1. Don't forget to prepare for the PIN of the vehicle before removing ECM from the vehicle.
2. Remember that substituting with a known-good ECM should be followed "The things to remember before repair (1)" in "System Inspection" procedure. (In case of faulty ECM, it has to be replaced with "VIRGIN" or "NEUTRAL" ECM.)
VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and monitor CURRENT DATA to check No. of Learnt key, ECM and KEY status.
2. Select "Diagnostic Trouble Codes (DTCs)" mode and Clear the DTCs.
3. Are any DTCs present?
YES - Go to the applicable troubleshooting procedure.
NO - System is performing to specification at this time.