6E1–431
RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
sensor (VSS) into miles per hour. The PCM uses this
signal to operate the speedometer.
0008
Use of Circuit Testing Tools
Do not use a test light to diagnose the powertrain
electrical systems unless specifically instructed by the
diagnostic procedures. Use Connector Test Adapter Kit J
35616 whenever diagnostic procedures call for probing
connectors.
Aftermarket Electrical And Vacuum
Equipment
Aftermarket (add–on) electrical and vacuum equipment is
defined as any equipment which connects to the vehicle’s
electrical or vacuum systems that is installed on a vehicle
after it leaves the factory. No allowances have been made
in the vehicle design for this type of equipment.
NOTE: No add–on vacuum equipment should be added
to this vehicle.
NOTE: Add–on electrical equipment must only be
connected to the vehicle’s electrical system at the battery
(power and ground).
Add–on electrical equipment, even when installed to
these guidelines, may still cause the powertrain system to
malfunction. This may also include equipment not
connected to the vehicle electrical system such as
portable telephones and radios. Therefore, the first step
in diagnosing any powertrain problem is to eliminate all
aftermarket electrical equipment from the vehicle. After
this is done, if the problem still exists, it may be diagnosed
in the normal manner.
Electrostatic Discharge Damage
Electronic components used in the PCM are often
designed to carry very low voltage. Electronic
components are susceptible to damage caused by
electrostatic discharge. Less than 100 volts of static
electricity can cause damage to some electronic
components. By comparison, it takes as much as 4000
volts for a person to feel even the zap of a static
discharge.
There are several ways for a person to become statically
charged. The most common methods of charging are by
friction and induction.
f
An example of charging by friction is a person sliding
across a vehicle seat.
f
Charge by induction occurs when a person with
well–insulated shoes stands near a highly charged
object and momentarily touches ground. Charges of
the same polarity are drained off leaving the person
highly charged with the opposite polarity. Static
charges can cause damage, therefore it is important
to use care when handling and testing electronic
components.
TS23793
NOTE: To prevent possible electrostatic discharge
damage, follow these guidelines:
f
Do not touch the PCM connector pins or soldered
components on the PCM circuit board.
f
Do not touch any electronic sensor module
component leads.
f
Do not open the replacement part package until the
part is ready to be installed.
f
Before removing the part from the package, ground
the package to a known good ground on the vehicle.
f
If the part has been handled while sliding across the
seat, while sitting down from a standing position, or
while walking a distance, touch a known good ground
before installing the part.
Upshift Lamp
Refer to Up shift lamp diagnosis.
GENERAL DESCRIPTION — AIR
INDUCTION
Air Induction System
The air induction system filters contaminants from the
outside air, and directs the progress of the air as it is
drawn into the engine. A remote–mounted air cleaner
prevents dirt and debris in the air from entering the