DESCRIPTION
These DTCs are stored when the engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication do not match.
HINT:
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
DTC Code |
DTC Detection Condition |
Trouble Area |
DTC Output Confirmation Operation |
---|---|---|---|
B2286 |
The engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication (1- trip detection logic*) do not match. |
|
Disconnect the cable from the negative (-) battery terminal, wait 30 seconds and reconnect the cable to the negative (-) battery terminal. Wait 20 seconds or more with the engine switch off, then start the engine and maintain an engine speed of 1000 rpm or more for 20 seconds or more. |
P0335 |
The engine speed signal sent by the ECM via direct line and the engine speed signal sent via CAN communication (1- trip detection logic*) do not match. |
|
Allow the engine to idle for 10 seconds or more. |
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
---|---|
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.
DTC |
Data List Item |
Active Test Item |
---|---|---|
B2286 P0335 |
Power Source Control
Starting Control
|
- |
PROCEDURE
1. |
READ VALUE USING TECHSTREAM |
(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 / Power Source Control or Starting Control / Data List.
(e) According to the display on the Techstream, read the Data List.
Power Source Control
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Engine Condition |
Engine state/Stop or Run |
Stop: Engine stopped Run: Engine running |
- |
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
---|---|---|---|
Engine Speed |
Engine speed/0 to 16383 r/min |
Fluctuates in accordance with engine speed |
- |
OK:
The Data List item changes in accordance with the engine condition.
NG | ![]() |
GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE |
|
3. |
CHECK HARNESS AND CONNECTOR (GROUND) |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECUASSEMBLY) - ECM) |
(a) Disconnect the C27 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the E14 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
C27-14 (NE) - E14-15 (NEO) |
Always |
Below 1 Ω |
C27-14 (NE) - E14-15 (NEO) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
5. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Reconnect the C27 certification ECU (smart key ECU assembly) connector.
(b) Reconnect the E14 ECM connector.
(c) Using an oscilloscope, check the engine speed input signal waveform at the terminal of the certification ECU (smart key ECU assembly). Standard Frequency:
|
|
OK | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
NG | ![]() |
GO TO SFI SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure to troubleshoot the intuitive parking assist
system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE MILLIMETER WAVE RADAR WIRE (w/ Toyota Safety Sense P)
Click here
2. REMOVE MILLIMETER WAVE RADAR SENSOR ASSEMBLY (w/ Toyota Safety Sense P)
Click here
3. REMOVE NO. 1 RADIATOR GRILLE GARNISH
(a) When Replacing the No. 1 Radiator Grille Garnish:
(1) Apply p ...
Lost Communication with ECM / PCM "A" (U0100,U0125,U0126,U0129)
DESCRIPTION
The millimeter wave radar sensor assembly and ECM communicate with each sensor
and ECU via CAN communication.
If any malfunction is detected in a CAN communication circuit, one or more CAN
communication system DTCs are stored.
DTC No.
Detection Item
...