Front Passenger Side Door Entry Lock and Unlock Functions Do Not Operate
DOOR LOCK: SMART KEY SYSTEM: Front Passenger Side Door Entry Lock and Unlock Functions do not Operate
- Front Passenger Side Door Entry Lock and Unlock Functions do not Operate
DESCRIPTION
When the front passenger door entry lock and unlock functions do not operate, one of the following may be malfunctioning: 1) power door lock system, 2) front passenger side door electrical key oscillator, or 3) certification ECU (smart key ECU assembly).
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
Before performing the inspection, check that there are no problems related to "CAN COMMUNICATION SYSTEM" and "LIN COMMUNICATION SYSTEM".
PROCEDURE
1. CHECK POWER DOOR LOCK OPERATION
(a) When the door control switch on the master switch assembly is operated, check that the locked doors unlock Operation Check.
OK:
Locked doors unlock.
NG -- GO TO POWER DOOR LOCK CONTROL SYSTEM Problem Symptoms Table
OK -- Continue to next step.
2. READ VALUE ON TECHSTREAM (DOOR OUTSIDE HANDLE)
(a) Connect Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the tester on.
(d) Enter the following menus:
Body Electrical / Smart Key / Data List.
(e) Select P Touch Sensor or P Trigger SW in the Data List and read the tester display.
Smart Key (Certification ECU (Smart Key ECU Assembly)):
OK:
On the tester screen, each item changes between ON and OFF according to the chart above.
NG -- REPLACE FRONT DOOR OUTSIDE HANDLE Service and Repair
OK -- Continue to next step.
3. CHECK WAVE ENVIRONMENT
(a) Bring the electrical key transmitter near the front passenger door outside handle, and perform a front passenger door entry lock and unlock operation check.
NOTICE:
If the key is brought within 0.2 m (0.656 ft.) of the door outside handle, communication is not possible.
HINT
* When the electrical key transmitter is brought near the front passenger door outside handle, the possibility of wave interference decreases, and it can be determined if wave interference is causing the problem symptom.
* If the inspection result is that 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.
OK:
Entry functions operate normally.
NG -- PERFORM KEY DIAGNOSTIC MODE INSPECTION
OK -- AFFECTED BY WAVE INTERFERENCE
4. PERFORM KEY DIAGNOSTIC MODE INSPECTION
(a) Diagnostic mode inspection (front passenger door electrical key oscillator)
(1) Connect Techstream to the DLC3.
(2) Turn the engine switch on (IG).
(3) Turn the tester on.
(4) Enter the following menus:
Body Electrical / Smart Key / Utility / Communication Check (Key Diag Mode) / Overhead + Passenger Side.
(5) When the electrical key transmitter is in the position shown in the illustration, check that the wireless door lock buzzer sounds.
HINT
If the buzzer sounds, it can be determined that the front passenger door electrical key oscillator is operating normally.
OK:
Wireless door lock buzzer sounds.
NG -- CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR)
OK -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal
5. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR)
(a) Disconnect the certification ECU (smart key ECU assembly) and door electrical key oscillator connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE)
(a) Remove the front door outside handle Service and Repair.
(b) Disconnect the door antenna connectors.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
7. INSPECT FUSE (ECU-B)
(a) Remove the ECU-B fuse from the engine room junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FUSE (ECU-B)
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - BATTERY AND BODY GROUND)
(a) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
9. REPLACE DOOR ELECTRICAL KEY OSCILLATOR
(a) Replace the door electrical key oscillator Removal.
NEXT -- Continue to next step.
10. CHECK DOOR ELECTRICAL KEY OSCILLATOR (OPERATION)
(a) Check that the entry functions operate normally.
OK:
Entry functions operate normally.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal
OK -- END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)