DESCRIPTION
If the back door entry lock function does not operate but the back door open function operates, the communication between the vehicle and key is normal. As a faulty part, the entry lock switch circuit (from the back door opener switch assembly (lock switch) to the certification ECU (smart key ECU assembly)) is suspected.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CHECK POWER DOOR LOCK OPERATION |
(a) When the door control switch on the master switch assembly is operated, check
that the doors unlock and lock according to switch operation (See page
).
OK:
Door locks operate normally.
NG | ![]() |
GO TO POWER DOOR LOCK CONTROL SYSTEM (Proceed to Problem Symptoms Table) |
|
2. |
READ VALUE USING TECHSTREAM (BACK DOOR OPENER 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 / Smart Key / Data List.
(e) Read the Data List according to the display on the Techstream.
Smart Key (Certification ECU (Smart Key ECU Assembly))
Tester Display |
Measurement Item/Display |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Tr/B-Door Lock SW |
Back door opener switch assembly (lock switch) / ON or OFF |
ON: Back door opener switch assembly (lock switch) pushed OFF: Back door opener switch assembly (lock switch) not pushed |
- |
OK:
On the Techstream screen, the display changes between ON and OFF as shown in the chart above.
OK | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
|
3. |
INSPECT BACK DOOR OPENER SWITCH ASSEMBLY |
(a) Remove the back door opener switch assembly (See page
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Position |
Specified Condition |
---|---|---|
1 (L) - 2 (E) |
Back door opener switch assembly (lock switch) not pushed (OFF) |
10 kΩ or higher |
1 (L) - 2 (E) |
Back door opener switch assembly (lock switch) pushed (ON) |
Below 1 Ω |
*1 |
Component without harness connected (Back Door Opener Switch Assembly) |
NG | ![]() |
REPLACE BACK DOOR OPENER SWITCH ASSEMBLY |
|
4. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - BACK DOOR OPENER SWITCH) |
(a) Disconnect the certification ECU (smart key ECU assembly) connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D25-1 (TSW6) - R13-1 (L) |
Always |
Below 1 Ω |
D25-1 (TSW6) - Body ground |
Always |
10 kΩ or higher |
R13-1 (L) - Body ground |
Always |
10 kΩ or higher |
*1 |
Front view of wire harness connector (to Certification ECU (Smart Key ECU Assembly)) |
*2 |
Front view of wire harness connector (to Back Door Opener Switch Assembly) |
OK | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Inspection
INSPECTION
PROCEDURE
1. INSPECT EVAPORATOR TEMPERATURE SENSOR
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
Condition
Specified Condition
...
Transmission Fluid Temperature Sensor "A" Performance (P0711)
DESCRIPTION
The Automatic Transmission Fluid (ATF) temperature sensor converts the fluid
temperature into a resistance value for use by the TCM.
The TCM applies a voltage to the temperature sensor through terminal THO1 of
the TCM.
The sensor resistance ...
Charge Warning Light Comes ON while Driving
PROCEDURE
1.
CHECK LOCK FUNCTION OF GENERATOR CLUTCH PULLEY
(a) Check the lock function with the pulley installed in the vehicle.
(1) Visually check that the rotor in the generator operates with the engine running.
(b) Check ...