Toyota RAV4 manuals

Toyota Sienna Service Manual: Terminals of ecm

Sfi system

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.

Sfi system

Sfi system

Sfi system

Sfi system

Sfi system

*1: The ECM terminal voltage is constant regardless of the output voltage from the sensor.

Sfi system

(a) WAVEFORM 1

(1) Camshaft Timing Oil Control Valve (OCV) operation signal 

HINT:

The wavelength becomes shorter as the engine rpm increases.

Sfi system

(b) WAVEFORM 2

(1) Heated oxygen sensor signal

HINT:

In the DATA LIST, item O2S B1S2 shows the ECM input values from the heated oxygen sensor.

Sfi system

(c) WAVEFORM 3

(1) Fuel injector operation signal 

HINT:

The wavelength becomes shorter as the engine rpm increases.

Sfi system

(d) WAVEFORM 4

(1) Knock sensor signal

HINT:

Sfi system

(e) WAVEFORM 5

(1) Variable Valve Timing (VVT) sensor signal (1)

(2) Crankshaft position sensor signal (2)

HINT:

The wavelength becomes shorter as the engine rpm increases.

Sfi system

(f) WAVEFORM 6

(1) Igniter IGT signal (from ECM to igniter) (1)

(2) Igniter IGF signal (from igniter to ECM) (2)

HINT:

The wavelength becomes shorter as the engine rpm increases.

Sfi system

(g) WAVEFORM 7

(1) 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.

Sfi system

(h) WAVEFORM 8

(1) Vehicle speed signal

HINT:

Sfi system

(i) WAVEFORM 9

(1) Throttle drive motor operation signal (positive terminal)

HINT:

The duty ratio varies depending on the throttle actuator operation.

Sfi system

(j) WAVEFORM 10

(1) Throttle drive motor operation signal (negative terminal)

Sfi system

(k) WAVEFORM 11

1) 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
DESCRIPTION (a) 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) of the vehicle. ...

Other materials:

Diagnostic trouble code chart
If a DTC is displayed during the DTC check, check the parts listed in the table below and proceed to the page given. HINT: *1: Comes on MIL (Malfunction Indicator Lamp) light up *2: "DTC stored" mark means ECM memorizes the malfunction code if the ECM detects the DTC detection ...

Maintenance data (fuel, oil level, etc.)
Dimensions and weights *1: Unladen vehicle *2: The model code is indicated on the Certification Label. For details, see “Vehicle identification” below. *3: The towing package is required. Toyota does not recommend towing with this vehicle without the towing package. Vehicle identifi ...

Problem symptoms table
HINT: Proceed to the troubleshooting for each circuit in the table below. Occupant Classification System Symptom Suspected area The front passenger seat condition differs from the indication by the passenger airbag ON/OFF indicator (DTC is not output). Trouble ...

© 2011-2022 Copyright www.tsienna.net