DOOR LOCK WIRELESS DOOR LOCK CONTROL SYSTEM B124296 Wireless Door Lock Tuner Component Internal Failure
DESCRIPTION
The electrical key and tire pressure monitoring system receiver assembly is used to receive radio waves related to the entry functions of the electrical key transmitter sub-assembly. The certification ECU (smart key ECU assembly) decodes the requested electrical key transmitter sub-assembly operation by identifying a key code based on the radio waves received via the electrical key and tire pressure monitoring system receiver assembly. The electrical key and tire pressure monitoring system receiver assembly receives a signal from the electrical key transmitter sub-assembly and sends signals to the main body ECU (multiplex network body ECU) through the certification ECU (smart key ECU assembly). (ex. If a door lock operation is requested, the certification ECU (smart key ECU assembly) sends a door lock command to the main body ECU (multiplex network body ECU)).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | DTC Output from | Priority |
|---|---|---|---|---|---|
| B124296 | Wireless Door Lock Tuner Component Internal Failure | ·
Short to ground in RDAM terminal circuit between the certification ECU (smart key ECU assembly) and electrical key and tire pressure monitoring system receiver assembly. ·
Short to ground in RDAM terminal circuit when voltage (5 V) is not being output from terminal RCO |
·
Wire harness or connector ·
Electrical key and tire pressure monitoring system receiver assembly ·
Certification ECU (smart key ECU assembly) |
Entry&Start | A |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
- ·
When using the GTS with the ignition switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start (CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.
·Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.
·When replacing or inspecting the electrical key and tire pressure monitoring system receiver assembly and wire harness, do not change the position or length of the wire harness. If the wire harness is too close to the electrical key and tire pressure monitoring system receiver assembly, the performance of the entry function and wireless function may be affected.
·The detection conditions of this DTC cannot be met within 10 seconds of the ignition switch being turned from off to ON or ON to off.
·Make sure that there are no electrical key transmitter sub-assemblies in the vehicle.
·When replacing the electrical key and tire pressure monitoring system receiver assembly, read the transmitter IDs (tire pressure warning system) stored in the old ECU using the GTS and write them down before removal.
·If the electrical key and tire pressure monitoring system receiver assembly has been replaced, it is necessary to perform initialization (Click hereSuspension>TIRE PRESSURE MONITORING>TIRE PRESSURE WARNING RECEIVER>INITIALIZATION202111,999999,_53,_111812,_0502517,RM100000001ZADA,) after registration (Click hereSuspension>TIRE PRESSURE MONITORING>TIRE PRESSURE WARNING RECEIVER>REGISTRATION202111,999999,_53,_111812,_0502517,RM100000001ZAD9,) of the transmitter IDs to the electrical key and tire pressure monitoring system receiver assembly.
PROCEDURE
Pre-procedure1
Disconnect the K7 electrical key and tire pressure monitoring system receiver assembly connector.
Procedure1
Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
| *a | Component with harness connected
(Certification ECU (Smart Key ECU Assembly)) |
- | - |
- Standard Resistance:
Tester Connection Condition Specified Condition Click Location & Routing(E52)Location & Routingewd_type=routing;type=c;code=E52
Click Connector(E52)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=E52;pinno=29
E52-29 (E) - Body ground Always Below 1 Ω
- Standard Voltage:
Tester Connection Condition Specified Condition Click Location & Routing(K6,E52)Location & Routingewd_type=routing;type=c,c;code=K6,E52
Click Connector(K6)Instrument Panel>Floor Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=K6;pinno=11,21
Click Connector(E52)Instrument Panel>Instrument Panel Wire / Radio Wiring Sub-Assy / Telephone Computer Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=E52;pinno=29
K6-11 (RDAM) - E52-29 (E) Always 11 to 14 V K6-21 (RCO) - E52-29 (E) Always Below 1 V → 4.5 to 5.5 V pulse generation at regular intervals
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG
Pre-procedure1
Disconnect the K6 certification ECU (smart key ECU assembly) connector.
Procedure1
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition Click Location & Routing(K7,K6)Location & Routingewd_type=routing;type=c,c;code=K7,K6
Click Connector(K7)Body>Floor Wire>Electrical Key and Tire Pressure Monitoring System Receiver Assemblyewd_type=component;type=c;code=K7;pinno=2,8,12
Click Connector(K6)Instrument Panel>Floor Wire>Smart Key ECU Assemblyewd_type=component;type=c;code=K6;pinno=11,21
K7-2 (DATA) - K6-11 (RDAM) Always Below 1 Ω K7-8 (+5) - K6-21 (RCO) Always Below 1 Ω K7-12 (GND) - Body ground Always Below 1 Ω K7-2 (DATA) or K6-11 (RDAM) - Other terminals and body ground Always 10 kΩ or higher K7-8 (+5) or K6-21 (RCO) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG