fuel type MAZDA MX-5 1997 Factory Repair Manual

Sensor is a cable driven pulse generator that is part of speedometer. Pulse signals are sent to TCM.
TCM OUTPUT DEVICES
HOLD Indicator Light
Receives signal from TCM to indicate switch position.
Inhibitor Signal
When shift selector lever is moved from Park or Neutral to another gear, signal is sent from TCM to ECM to
regulate fuel injection volume for shift shock prevention.
Shift Solenoids & 3-2 Control Solenoid
The TCM controls transmission shifting by delivering an output signal to operate proper solenoid. 3-2 control
solenoid affects downshift timing. See SOLENOID OPERATION
table. Hydraulic pressure is retained when
solenoid is off and drained when solenoid is on. Solenoids are located on transmission valve body. See Fig. 1
.
SOLENOID OPERATION
TCC Solenoid Valve
Solenoid valve is ON/OFF type controlled by TCM. Solenoid regulates pilot pressure to applied to lock-up
control plug. Hydraulic pressure is retained when solenoid is on and drained when solenoid is off. Solenoid is
located on side of case. See Fig. 1
.
Shift Lever Position1-2 Shift Solenoid2-3 Shift Solenoid
3-4 Shift
Solenoid
"D" (Drive)
1st GearOnOnOn
2nd GearOffOnOn
3rd GearOffOffOn
4th GearOffOffOff
"2" (Second)
1st GearOnOnOn
2nd GearOffOnOn
"L" (Low)
1st GearOnOnOn
"R" (Reverse)OffOffOn
"N" or "P"OnOnOn

1997 Mazda MX-5 Miata
1997 AUTOMATIC TRANSMISSIONS NC4A-EL Electronic Controls
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GENERAL INFORMATION
Computer Relearn Procedures
COMPUTER RELEARN PROCEDURES
Vehicles equipped with engine or transmission computers may require a relearn procedure after vehicle battery
is disconnected. Many vehicle computers memorize and store vehicle operation patterns for optimum
driveability and performance. When vehicle battery is disconnected, this memory is lost. The computer will use
default data until new data from each key start is stored. As computer memorizes vehicle operation for each
new key start, driveability is restored. Vehicle computers may memorize vehicles operation patterns for 40 of
more key starts.
Customers often complain of driveability problems during relearn stage because vehicle acts differently then
before being serviced. Depending on type and make of vehicle and how it is equipped, the following complaints
(driveability problems) may exist:
Harsh Or Poor Shift Quality
Rough Or Unstable Idle
Hesitation Or Stumble
Rich Or Lean Running
Poor Fuel Mileage
These symptoms and complaints should disappear after a number of drive cycles have been memorized. To
reduce the possibility of complaints, after any service which requires battery power to be disconnected, vehicle
should be road tested.
GENERIC COMPUTER RELEARN PROCEDURES
Some manufacturers identify a specific relearn procedure which will help establish suitable driveability during
relearn stage. These procedures are especially important if vehicle is equipped with and electronically
controlled automatic transmission or transaxle. Always complete procedure before returning vehicle to
customer. The following general procedures are to be used if driveability problems are encountered after power
loss or battery has been disconnected. These procedures may provide an aid in eliminating these problems.
Automatic Transmission
Set parking brake, start engine in "P" or "N" position. Warm-up vehicle to normal operating temperature
or until cooling fan cycles.
Allow vehicle to idle for one minute in "N" position. Select "D" and allow engine to idle for one minute.
Accelerate at normal throttle position (20-50%) until vehicle shifts into top gear.
Cruise at light to medium throttle.
Decelerate to a stop, allowing vehicle to downshift, and use brakes normally.
Process may be repeated as necessary.

1997 Mazda MX-5 Miata
GENERAL INFORMATION Computer Relearn Procedures

1997 Mazda MX-5 Miata
GENERAL INFORMATION Computer Relearn Procedures
Microsoft
Sunday, July 05, 2009 1:47:32 PMPage 1 © 2005 Mitchell Repair Information Company, LLC.
Microsoft
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