Fuel tank cap
Exhaust pipeAir-fuel ratio (a/f) and heated oxygen (ho2) sensor
monitors (active air-fuel ratio control type)
Preconditions
The monitor will not run unless:
2 Minutes or more have elapsed since the engine
was started.
The engine coolant temperature (ect) is 75°c
(167°f) or more.
Cumulative driving time at a vehicle speed of 48
km/h (30 mph) or more exceeds 6 minutes.
Air-fuel rat ...
Diagnosis system
Description
When troubleshooting on-board diagnostic (obd
ii) vehicles, the vehicle must be connected to the
obd ii scan tool (complying with sae j1987).
Various data output from the vehicle's ecm can
then be read.
Obd ii regulations require that the vehicle's onboard
computer ...
Inspection
Inspect camshaft timing oil control valve
assembly
Measure the resistance of the oil control valve.
Standard resistance
If the result is not as specified, replace the oil control
valve assembly.
Check the operation.
Apply battery voltage across the terminals and
chec ...