
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.
Problem symptoms table
Diagnosis systemWeight limits
The gross trailer weight must never exceed 1500 lb. (680 Kg).
The gross combination weight must never exceed the gcwr
described below.
2Wd models: 5985 lb. (2715 Kg)
awd models: 6100 lb. (2765 Kg)
The gross vehicle weight must
never exceed the gvwr indicated
on the certification l ...
Components
Fuse boxes
Engine oil filler cap
Engine oil level dipstick
Battery
Brake fluid reservoir
Radiator
Electric cooling fan
Condenser
Washer fluid tank
Engine coolant reservoir
Checking the engine oil
With the engine at operating
temperature and turned off,
check the oil level on the di ...
Floor shift assembly
Components
Removal
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 shift lever knob sub-assembly
Remove re ...