DESCRIPTION
If the entry back door open function does not operate but the back door entry lock function operates, the communication between the vehicle and key is normal. As a faulty part, the back door open switch circuit (from the back door opener switch assembly (opener switch) to the certification ECU (smart key ECU assembly)) is suspected.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
READ VALUE USING TECHSTREAM (ENTRY BACK DOOR OPEN FUNCTION) |
(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/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
B-Dr Opening Operation |
Back door opening Operation / Long, Twice, OFF |
Customization status displayed |
- |
Result |
Proceed to |
---|---|
Customize setting is LONG or TWICE. |
A |
Customize setting is OFF. |
B |
B | ![]() |
PERFORM CUSTOMIZE SETTING (Proceed to Customize Parameters) |
|
2. |
CHECK POWER DOOR LOCK CONTROL SYSTEM |
(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) |
|
3. |
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/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Tr/B-Door Unlock SW |
Back door opener switch assembly (opener switch) / ON or OFF |
ON: Back door opener switch assembly (opener switch) pushed OFF: Back door opener switch assembly (opener 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) |
|
4. |
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 |
---|---|---|
2 (E) - 3 (UL) |
Back door opener switch assembly (opener switch) not pushed (OFF) |
10 kΩ or higher |
2 (E) - 3 (UL) |
Back door opener switch assembly (opener switch) pushed (ON) |
Below 1 Ω |
*1 |
Component without harness connected (Back Door Opener Switch Assembly) |
NG | ![]() |
REPLACE BACK DOOR OPENER SWITCH ASSEMBLY |
|
5. |
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 |
---|---|---|
D25-22 (TSW5) - R13-3 (UL) |
Always |
Below 1 Ω |
D25-22 (TSW5) - Body ground |
Always |
10 kΩ or higher |
R13-3 (UL) - 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 |
Multi-information display (LCD type)
The multi-information display presents the driver with a variety of driving-related
data, including the clock and current outside temperature.
• Clock
Indicates and sets the time.
• Outside temperature
Indicates the outside temperature.
The temper ...
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) Diagnostic System
When troubleshooting a vehicle with a diagnostic system, the only difference
from the usual troubleshooting procedure is connecting the Techstream to the vehicle
and reading various data output from ...
Precaution
PRECAUTION
1. EXPRESSIONS OF IGNITION SWITCH
(a) The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Switch Type
I ...