DESCRIPTION
If the front passenger door entry lock function operates normally, but its entry unlock function does not, this means that the request code from the front passenger door is being output normally. In this case, a malfunction in the touch sensor circuit (from the certification ECU (smart key ECU assembly) to the front door outside handle assembly (touch sensor)) is suspected.
WIRING DIAGRAM
INSPECTION PROCEDURE
Note
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.
Confirm that another key is not in the cabin.
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 switch operation Click here.
OK |
---|
Door locks operate normally. |
NG |
GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) Click here |
OK |
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.
Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
---|---|---|---|
FR Door Lock Pos*1 | Front right side lock position switch signal/LOCK or UNLOCK | LOCK: Front right side door locked UNLOCK: Front right side door unlocked |
- |
FL Door Lock Pos*2 | Front left side door lock position switch signal/LOCK or UNLOCK | LOCK: Front left side door locked UNLOCK: Front left side door unlocked |
- |
*1: for LHD
*2: for RHD
OK |
---|
On the intelligent tester screen, the display changes between LOCK and UNLOCK as shown in the chart above. |
NG |
GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit) Click here |
OK |
READ VALUE USING INTELLIGENT TESTER (DOOR OUTSIDE HANDLE)
Enter the following menus: Body / Entry & Start / Data List.
Read the Data List according to the display on the intelligent tester.
Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
---|---|---|---|
P-Door Touch Sensor | Status of touch sensor (for front passenger side) / ON or OFF | ON: Touch sensor touched OFF: Touch sensor not touched |
- |
OK |
---|
On the intelligent tester screen, the display changes between ON and OFF as shown in the chart above. |
NG |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE) Click here |
OK |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - FRONT DOOR OUTSIDE HANDLE)
Disconnect the certification ECU (smart key ECU assembly) connector.
*1 | Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) |
*2 | Front view of wire harness connector (to Front Door Outside Handle Assembly (for Front Passenger Side)) |
*3 | for LHD |
*4 | for RHD |
Disconnect the front door outside handle assembly (for front passenger side) connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
INSPECT CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (TOUCH SENSOR SIGNAL INPUT)
Reconnect the certification ECU (smart key ECU assembly) connector.
Reconnect the front door outside handle assembly (for front passenger side) connector.
Measure the voltage and for pulses according to the value(s) in the table below.
Standard | |||||||||
---|---|---|---|---|---|---|---|---|---|
|
*1 | Component with harness connected (Certification ECU (Smart Key ECU Assembly)) |
*2 | for LHD |
*3 | for RHD | - | - |
NG |
REPLACE FRONT DOOR OUTSIDE HANDLE ASSEMBLY (for Front Passenger Side) Click here |
OK |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)