Toyota Sienna Service Manual: Terminals of ECM
1. SFI SYSTEM
HINT: The standard normal voltage between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals are also indicated.
The check results should be compared with the standard normal voltage for that pair of terminals, listed in the "Specified Condition" column.
The illustration above can be used as a reference to identify the ECM terminal locations.
*1: The ECM terminal voltage is constant regardless of the output voltage from the sensor.
- WAVEFORM 1
- Camshaft Timing Oil Control Valve (OCV) operation signal
HINT: The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 2
- Heated oxygen sensor signal
HINT: In the DATA LIST, item O2S B1S2 shows the ECM input values from the heated oxygen sensor.
- WAVEFORM 3
- Fuel injector operation signal
HINT: The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 4
- Knock sensor signal
HINT:
- The wavelength becomes shorter as the engine rpm increases.
- The waveforms and amplitudes displayed differ slightly depending on the vehicle.
- WAVEFORM 5
- Variable Valve Timing (VVT) sensor signal (1)
- Crankshaft position sensor signal (2)
HINT: The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 6
- Igniter IGT signal (from ECM to igniter) (1)
- Igniter IGF signal (from igniter to ECM) (2)
HINT: The wavelength becomes shorter as the engine rpm increases.
- WAVEFORM 7
- Purge VSV for EVAP system operation signal
HINT: If the waveform is not similar to that shown in the illustration, check the waveform again after idling for 10 minutes or more.
- WAVEFORM 8
- Vehicle speed signal
HINT:
- The wavelength becomes shorter as the vehicle speed increases.
- Depending on the vehicle, the output waveform voltage may rise to 12 V if influenced by optionally installed systems.
- WAVEFORM 9
- Throttle drive motor operation signal (positive terminal)
HINT: The duty ratio varies depending on the throttle actuator operation.
- WAVEFORM 10
- Throttle drive motor operation signal (negative terminal)
HINT: The duty ratio varies depending on the throttle actuator operation.
- WAVEFORM 11
- Engine speed signal
HINT: The wavelength becomes shorter as the engine rpm increases.
Problem symptoms table
HINT:
When a malfunction is not confirmed by a DTC (Diagnostic
Trouble Code) check and the cause of problem cannot be
identified through a basic inspection, troubleshoot according
to the priority ...
Diagnosis system
1. DESCRIPTION
When troubleshooting OBD II (On-Board
Diagnostics) vehicles, an intelligent tester
(complying with SAE J1987) must be connected to
the DLC3 (Data Link Connector 3) o ...
Other materials:
Calling the message sender
Calls can be made to an e-mail/SMS/MMS message sender’s phone
number.
Display the message inbox screen.
Select the desired message.
Select .
Check that the “Call” screen is displayed.
Calling from a number within a message
Calls can be made to a number identified in a message ...
Installation
1. INSTALL OUTSIDE MOULDING
Using a heat light, heat the mounting surface of the
vehicle body between 40 to 60 C (104 to 140 F).
NOTICE:
Do not heat the body excessively.
Remove the tape from the vehicle body.
Wipe off the stains with cleaner.
Clean the outside moulding (if reusing t ...
Control Module Performance
DTC P0607 Control Module Performance
DESCRIPTION
The ECM continuously monitors its main and sub CPUs. This self-check ensures
that the ECM is
functioning properly. If outputs from the CPUs are different and deviate from
the standards, the ECM will
illuminate the MIL and set a DTC immediately ...
