Driver Side Door Entry Unlock Function Does Not Operate

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): Driver Side Door Entry Unlock Function does not Operate
- Driver Side Door Entry Unlock Function does not Operate

DESCRIPTION

If the driver door entry unlock function does not operate but the entry lock function operates, the communication line between the vehicle and electrical key transmitter is normal. Any of the following components may have a malfunction: 1) touch sensor circuit certification ECU (smart key ECU assembly); 2) front door outside handle assembly (driver side); or 3) door electrical key oscillator (driver side).

WIRING DIAGRAM





INSPECTION PROCEDURE

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 USING TECHSTREAM (DOOR UNLOCK DETECTION SWITCH)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Master Switch / Data List.

(e) Read the Data List according to the display on the Techstream.

Master Switch (Multiplex Network Master Switch Assembly)





OK:

On the Techstream screen, ON or OFF will be displayed accordingly.

Result:





B -- GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) Problem Symptoms Table
A -- Continue to next step.

3. READ VALUE USING TECHSTREAM (DOOR OUTSIDE HANDLE)

(a) Enter the following menus: Body Electrical / Smart Access / Data List.

(b) Read the Data List according to the display on the Techstream.

Smart Access (Certification ECU (Smart Key ECU Assembly))





OK:

On the Techstream screen, the display changes between ON and OFF according to the chart above.

NG -- CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR)

OK -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - DOOR ELECTRICAL KEY OSCILLATOR)

(a) Disconnect the certification ECU (smart key ECU assembly) connector.

(b) Disconnect the door electrical key oscillator (driver side) connector.





(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.

5. CHECK HARNESS AND CONNECTOR (DOOR ELECTRICAL KEY OSCILLATOR - FRONT DOOR OUTSIDE HANDLE)

(a) Disconnect the front door outside handle assembly (driver side) connector.





(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. REPLACE DOOR ELECTRICAL KEY OSCILLATOR (DRIVER SIDE)

(a) Replace the door electrical key oscillator (driver side) Removal.

NEXT -- Continue to next step.

7. CHECK DOOR ELECTRICAL KEY OSCILLATOR (DRIVER SIDE OPERATION)

(a) Check that the entry functions operate normally Operation Check.

OK:

Entry functions operate normally.

NG -- REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (DRIVER SIDE)

OK -- END (DOOR ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)

8. REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (DRIVER SIDE)

(a) Replace the front door outside handle assembly (driver side) Removal.

NEXT -- Continue to next step.

9. CHECK FRONT DOOR OUTSIDE HANDLE ASSEMBLY (DRIVER SIDE OPERATION)

(a) Check that the entry functions operate normally Operation Check.

OK:

Entry functions operate normally.

NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Removal

OK -- END (FRONT DOOR OUTSIDE HANDLE IS DEFECTIVE)