ENTRY AND START SYSTEM(for Entry Function) Driver Side Door Entry Lock and Unlock Functions do not Operate
| DTC Code | DTC Name |
|---|---|
| Driver Side Door Entry Lock and Unlock Functions do not Operate |
DESCRIPTION
When the driver side door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) the power door lock system, 2) the front door outside handle (for driver side), or 3) the certification ECU.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
The entry and start system (for entry function) uses a multiplex communication system (LIN communication system) and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (Click here). Troubleshoot the entry and start system (for entry function) after confirming that the communication system is functioning properly.
When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the DLC3, and turn a courtesy light switch on and off at 1.5-second intervals until communication between the tester and vehicle begins.
Check that there are no electrical key transmitters in the vehicle.
Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output (Click here).
When checking the entry lock operation multiple times, the lock operation may be limited to 2 consecutive operations according to the settings. In order to perform the entry lock operation 3 or more times, an unlock operation must be performed once (any type of unlock operation is sufficient). However, only consecutive entry lock operations are limited. Using the wireless lock or other types of lock operations, it is possible to perform consecutive lock operations without this limitation.
PROCEDURE
CHECK POWER DOOR LOCK OPERATION
When the door control switch on the master switch assembly is operated, check that the doors unlock and lock according to the switch operation (Click here).
OK
Door locks operate normally.
READ VALUE USING INTELLIGENT TESTER (DOOR LOCK POSITION SWITCH)
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG).
Turn the intelligent tester on.
Enter the following menus: Body / Main Body / Data List.
Read the Data List according to the display on the intelligent tester.
Table 1. Main body Tester Display
Measurement Item/Range
Normal Condition
Diagnostic Note
D-Door Lock Pos SW
Driver side door lock position switch signal / ON or OFF
ON: Driver side door unlocked
OFF: Driver side door locked
-
OK
On the intelligent tester screen, the display changes between ON and OFF as shown in the chart above.
GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Only Driver Door LOCK / UNLOCK Functions do not Operate)
CHECK WAVE ENVIRONMENT
Bring the electrical key transmitter approximately 0.3 m (0.984 ft.) from door outside handle (for driver side) and perform a driver side door entry lock and unlock operation check.
Note:If the key is brought within 0.2 m (0.656 ft.) of the door handle, communication is not possible.
Tip:When the electrical key transmitter is brought near the driver side door outside handle, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
If the operation check is normal, the possibility of wave interference is high. Also, added vehicle components may cause wave interference. If installed, remove them and perform the operation check.
Table 2. Result Result
Proceed to
Operation check fails
A
Operation check is normal
B
AFFECTED BY WAVE INTERFERENCE
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE)
-
Disconnect the H51 ECU connector.
Disconnect the K7*1 or J9*2 handle connector.
*1: for LHD
*2: for RHD
Measure the resistance according to the value(s) in the table below.
Standard Resistance
for LHD
Tester Connection
Condition
Specified Condition
K7-3 (ANT2) - H51-4 (CG1B)
Always
Below 1 Ω
K7-6 (ANT1) - H51-3 (CLG1)
Always
Below 1 Ω
K7-2 (GND) - Body ground
Always
Below 1 Ω
H51-4 (CG1B) - Body ground
Always
10 kΩ or higher
H51-3 (CLG1) - Body ground
Always
10 kΩ or higher
for RHD
Tester Connection
Condition
Specified Condition
J9-3 (ANT2) - H51-4 (CG1B)
Always
Below 1 Ω
J9-6 (ANT1) - H51-3 (CLG1)
Always
Below 1 Ω
J9-2 (GND) - Body ground
Always
Below 1 Ω
H51-4 (CG1B) - Body ground
Always
10 kΩ or higher
H51-3 (CLG1) - Body ground
Always
10 kΩ or higher
Table 3. Text in Illustration *1
for LHD
*2
for RHD
*3
Front view of wire harness connector
(to Front Door Outside Handle Assembly [for Driver Side])
*4
Front view of wire harness connector
(to Certification ECU)
REPAIR OR REPLACE HARNESS OR CONNECTOR
-
CHECK CERTIFICATION ECU
-
Disconnect the K7*1 or J9*2 handle connector.
*1: for LHD
*2: for RHD
Measure the voltage according to the value(s) in the table below.
Standard Voltage
for LHD
Tester Connection
Switch Condition
Specified Condition
K7-3 (ANT2) - K7-6 (ANT1)
Engine switch off, all doors closed, all doors locked with wireless door lock control and key not in cabin
No pulse generation → Pulse generation
K7-5 (B) - Body ground
Engine switch off → Engine switch on (IG)
9 to 14 V → Below 2 V
for RHD
Tester Connection
Switch Condition
Specified Condition
J9-3 (ANT2) - J9-6 (ANT1)
Engine switch off, all doors closed, all doors locked with wireless door lock control and key not in cabin
No pulse generation → Pulse generation
J9-5 (B) - Body ground
Engine switch off → Engine switch on (IG)
9 to 14 V → Below 2 V
Table 4. Text in Illustration *1
for LHD
*2
for RHD
*3
Front view of wire harness connector
(to Front Door Outside Handle Assembly [for Driver Side])
REPLACE CERTIFICATION ECU
-
REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (FOR DRIVER SIDE)
Replace the front door outside handle assembly (for driver side) (Click here).
CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (OPERATION)
Check that the entry functions operate normally (Click here).
OK
Entry functions operate normally.
END (FRONT DOOR OUTSIDE HANDLE ASSEMBLY IS DEFECTIVE)
REPLACE CERTIFICATION ECU