DESCRIPTION
The door control receiver is used to receive radio waves relating to the entry functions of the electrical key transmitter sub-assembly. The certification ECU (smart key ECU assembly) decodes the requested electrical key transmitter sub-assembly by identifying a key code based on the radio waves received via the door control receiver. The door control receiver receives a signal from the electrical key transmitter sub-assembly and sends signals to the main body ECU (multiplex network body ECU) through the certification ECU (smart key ECU assembly). The certification ECU (smart key ECU assembly) then sends a command, according to the requested operation, to each ECU (ex. if door lock operation is requested, the certification ECU (smart key ECU assembly) sends a door lock command to the main body ECU (multiplex network body ECU)).
DTC No. |
DTC Detecting Condition |
Trouble Area |
---|---|---|
B1242 |
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
PROCEDURE
1. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Disconnect the door control receiver connector. |
|
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
T24-8 (+5) - T24-12 (GND) |
Engine switch off, all doors closed and electrical key transmitter sub-assembly switch not pressed → electrical key transmitter sub-assembly switch pressed |
Below 1 V → 4.5 to 5.5 V (Pulse generation) |
T24-2 (DATA) - T24-12 (GND) |
Engine switch off |
11 to 14 V pulse generation at regular intervals |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
T24-12 (GND) - Body ground |
Always |
Below 1 Ω |
*a |
Front view of wire harness connector (Door control receiver) |
OK |
REPLACE DOOR CONTROL RECEIVER |
|
2. |
CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)) |
(a) Disconnect the certification ECU (smart key ECU assembly) connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C28-19 (CSEL) - T24-6 (CSEL) |
Always |
Below 1 Ω |
C28-20 (RDAM) - T24-2 (DATA) |
Always |
Below 1 Ω |
C28-18 (RCO) - T24-8 (+5) |
Always |
Below 1 Ω |
C29-11 (E) - Body ground |
Always |
Below 1 Ω |
T24-12 (GND) - Body ground |
Always |
Below 1 Ω |
C28-19 (CSEL) or T24-6 (CSEL) - Body ground |
Always |
10 kΩ or higher |
C28-22 (RDAM) or T24-2 (DATA) - Body ground |
Always |
10 kΩ or higher |
C28-18 (RCO) or T24-8 (+5) - Body ground |
Always |
10 kΩ or higher |
OK |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Driver Side Power Window Auto Up / Down Function does not Operate with Power
Window Master Switch
DESCRIPTION
If the manual up/down function can be performed but the auto up/down function
cannot, then the fail-safe mode may be functioning.
If the power window initialization (See page
) has not been performed, the auto up/down function will not operate.
WIRING DIAGRAM
CAUTION / NOTICE ...
Customize Parameters
CUSTOMIZE PARAMETERS
1. CUSTOMIZING FUNCTION WITH TECHSTREAM
NOTICE:
When the customer requests a change in a function, first make sure that
the function can be customized.
Be sure to make a note of the current settings before customizing.
When troubleshooting a function, f ...
Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT) (P2714)
SYSTEM DESCRIPTION
The shift solenoid valve SLT controls the transmission line pressure for smooth
transmission operation based on signals from the throttle position sensor and the
vehicle speed sensor. The ECM adjusts the current to shift solenoid valve SLT to
control hydraulic line pressure ...