Toyota Sienna Service Manual: Actuator Supply Voltage Circuit / Open
DTC P0657 Actuator Supply Voltage Circuit / Open
DESCRIPTION
The ECM monitors the output voltage to the throttle actuator. This self-check ensures that the ECM is functioning properly. The output voltage is usually 0 V when the ignition switch is turned off. If the output voltage is higher than 7 volts when the ignition switch is turned off, the ECM will illuminate the MIL and set a DTC when the ignition switch is turned on.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
INSPECTION PROCEDURE
1 CHECK WHETHER DTC OUTPUT RECURS (IN ADDITION TO DTC P0657)
- Connect the intelligent tester to the DLC3.
- Turn the ignition switch to the ON position.
- Turn the tester on.
- Clear the DTC.
- Turn the ignition switch off.
- Disconnect the battery negative terminal and wait for 1 minute.
- Connect the battery negative terminal.
- Turn the ignition switch to the ON position for 10 seconds.
- Turn the ignition switch off.
- Turn the ignition switch to the ON position.
- Enter the following menus: DIAGNOSIS / ENHANCED II / DTC INFO / CURRENT CODES.
- Read the DTCs.
Result
REPLACE ECM
VIN not Programmed or Mismatch - ECM / PCM
DTC P0630 VIN not Programmed or Mismatch - ECM / PCM
DESCRIPTION
DTC P0630 is set when the Vehicle Identification Number (VIN) is not stored
in the Engine Control Module
(ECM) or the input VIN is ...
Transmission Range Sensor Circuit Malfunction
(PRNDL Input)
DTC P0705 Transmission Range Sensor Circuit Malfunction
(PRNDL Input)
DESCRIPTION
The park/neutral position switch detects the shift lever position and sends
signals to the ECM.
HINT:
After ...
Other materials:
Freeze frame data
1. DESCRIPTION
The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC
is stored. When troubleshooting, freeze frame data
can be helpful in determining whether the vehicle
was running or stopped, whether the engine was
warmed up or not, whe ...
Canceling the rear moon roof operation (vehicles with the rear
moon roof)
Press the switch to disable the
rear moon roof operation from the
rear seat.
Pressing the switch again will
enable the operation again.
The moon roof can be operated when
The engine switch is in the “ON” position (vehicles without a smart key
system)
or IGNITION ON mode (vehicles ...
Disassembly
1. REMOVE REAR SEAT LEG COVER LH
Remove the 2 screws and seat leg cover.
2. REMOVE REAR SEAT LEG COVER RH
Remove the 2 screws and seat leg cover.
3. REMOVE REAR SEAT LEG SIDE COVER LH
Remove the 2 screws and seat leg side cover.
4. REMOVE LH SEAT REAR SEAT LOCK ...