Hint:
The standard normal voltage between each pair of ecm terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard normal voltage for that pair of terminals, displayed in the specified condition column. The illustration above can be used as a reference to identify the ecm terminal locations.
Hint:
*: The ecm terminal voltage is constant regardless of the output voltage from the sensor.
Waveform 1
Camshaft
timing oil control valve (ocv)
Heated oxygen
sensor
Hint:
In data list, item o2s b1 s2 shows the ecm input values from the heated oxygen sensor.
Injector no.
1 (To no. 4) Injection signal
Hint:
The wavelength becomes shorter as the engine rpm increases.
Knock sensor
Hint:
Crankshaft
position sensor and camshaft position
sensor
Hint:
The wavelength becomes shorter as the engine rpm increases.
Igniter igt
signal (from ecm to igniter) and igniter
igf signal (from igniter to ecm)
Hint:
The wavelength becomes shorter as the engine rpm increases.
Purge vsv
Hint:
If the waveform is not similar to the illustration, check the waveform again after idling for 10 minutes or more.
Vehicle speed
signal
Hint:
The wavelength becomes shorter as the vehicle speed increases.
Throttle
actuator positive terminal
Hint:
The duty ratio varies depending on the throttle actuator operation.
Throttle
actuator negative terminal
Hint:
The duty ratio varies depending on the throttle actuator operation.
Engine speed
signal
Hint:
The wavelength becomes shorter as the engine rpm increases.
Can
communication signal
Hint:
The waveform varies depending on the can communication signal.
Can
communication signal
Hint:
The waveform varies depending on the can communication signal.
Generator
Hint:
A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.
Generator
Hint:
A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.
Generator
Hint:
A constant value is not output, as the duty ratio varies depending on the electrical load and battery condition.
Climate control
Automatic climate control
Symbol/ Function
Temperature.
Air conditioning.
Maximum cooling.
AUTO program.
Recirculated-air mode.
Air flow, manual.
Air distribution, manual.
SYNC program.
Defrost and defog window.
Rear window defroster.
Active seat ventilation.
Seat heating.
Seat and armre ...
Removal
Discharge fuel system pressure (see page
fu-9)
Disconnect cable from negative battery
terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
prevent airbag and seat belt pretensioner activation.
Remove hood sub-assembly ( ...
On-vehicle inspection
Check battery condition
Notice:
If the battery is weak or if the engine is difficult to
start, perform the following procedures.
Check the battery for damage and deformation. If
severe damage, deformation or leakage is found,
replace the battery.
Check the electrolyte quantity of e ...