ECO mode MAZDA MX-5 1994 Workshop Manual

SAE STANDARDS Engine and Emission Systems (cont'd) I Previous Standard I SAE Standard b I - Abbreviation ( Name I Oxvaen Sensor - .w- - I I ." I 02s I Oxygen Sensor I - PTC Reed Valve Relief 1 Solenoid Valve Secondary Air lnjection System - Seauential Fuel lniection SMFl L - Service Code(s) DTC - Spark Ignition Dl - Supercharger SC Abbreviation I Name Open Loop Positive Temperature Coefficient Hnatar Secondarv Air Pulse Valve Remark . .--.-. Pressure Sensor Secondary Air Bypass valve Pulsed Secondarv Air lniection H02S I Heated Oxvaen Sensor I With heater OL EFE Secondary Air lnjection Sequential Multipoint Fuel lnjection Diagnostic Trouble Code(s) Open Loop Early Fuel Evaporation MAP MVS Distributor lgnition Supercharger Manifold Absolute Pressure Sensor Manifold Vacuum Sensor I - - - - - - Checks vacuum only Pulsed iniection - Switching Solenoid Valve Test Mode(s) Three Way Catalyst Throttle Body Throttle Sensor Turbocharaer .. Maifold Differential Pressure Manifold Vacuum Zone Switch , - I - 1 VAC I MDP 1-1 Water Thermosensor L - I Vacuum Switch I ECTS I Engine Coolant Temperature Sensor I SASV DTM TWC TB TPS TC MVZS #6: Supplies air to three way catalyst #7: Diagnostic trouble codes depend on the test mode - Secondary Air Switching Valve Diagnostic Test Mode(s) Three Way Catalyst Throttle Body Throttle Position Sensor Turbocharaer Transmission (Transaxle) and Steering System L - - Previous Standard I I I I Abbreviation - - - SAE Standard Fully Open Inhibitor Switch - I Lock-up Position - - Name Clutch Position EC-AT Control Unit Fullv Closed Abbreviation CPP PCMT CTP TCC I Torque Converter Clutch - - - WOT PNS Output Signal(s) Overdrive I Name Clutch Pedal Position Powertrain Control Module (Transaxle) Powertrain Control Module (Transmission) Closed Throttle Position Wide Open Throttle ParWNeutral Switch Power Steering Pressure Switch Pulse Generator Vehicle Speed Sensor - 1 3rd Gear Remark FF FR PTCS 4GR 3GR I Third Gear Powertrain Control Signal(@ Fourth Gear SPS VSPG VSS Steering Pressure Sensor Vehicle Speed Pulse Generator Vehicle Speed Sensor Gartner Banana

TROUBLESHOOTING GUIDE DIAGNOSTIC INDEX Cranks normally but will not start (No com- Engine cranks at normal speed but shows no sign of bustion) I #firingN I F-17 I No. 1 TROUBLESHOOTING ITEM Will not crank or cranks slowly -- -- Cranks normally but will not start (Partial combustion) -When engine is cold Cranks normally but will not start (Partial combustion) - After warm-up Cranks normally but hard to start - Always Cranks normally but hard to start - When engine is cold - Engine cranks at normal speed but shows partial com- bustion and will not continue to run Engine cranks at normal speed but shows partial com- bustion and will not continue to run after running and hot soaked Engine cranks at normal speed but requires excessive cranking time (more than 5 sec.) before starting Same condition as No.5 when engine is cold Restarts OK after warm-up 8 DESCRIPTION Refer to Engine Electrical System Low idle speed1Rough idle - Before warm- UP Low idle speed/Rough idle -After warm-up PAGE SECTION G Cranks normally but hard to start - After warm-up Rough idle - Always Engine speed low or engine vibrates excessively at idle during warm-up Engine runs normally at idle during warm-up but vi- brates excessively after warm-up High idle speed - After warm-up Low idle speed - When NC, PIS, or EIL ON l5 1 Engine stalls at idle - Always Engine starts normally but vibrates excessively and stalls at idle in every condition I F40 1 13 14 Same condition as No.5 after running and hot soaked Starts normally when cold Engine vibrates excessively at idle in every condition Engine idle excessive for operation mode Engine speed decreases at idle when NC, PIS, or EIL is ON 18 1 Engine stalls during start-up 1 Engine unexpectedly stops running while starting I F-45 F-26 F-27 F-34 F-36 Rough idle just after starting Idle moves up and down 16 17 l9 1 Engine stalls on deceleration I Engine unexpectedly stops running while decelerating or after deceleration Engine starts normally but vibrates excessively only just after starting Engine speed up and down periodically at idle Engine stalls at idle - Before warm-up Engine stalls at idle - After warm-up Engine stalls at idle -When AIC, PIS, or EIL running at idle when 1 20 1 ON I F-50 1 F-37 F-38 I I . . I 21 1 Engine stalls suddenly (Intermittent) I Engine intermittently stops running I F-52 Engine starts normally but vibrates excessively and stalls at idle before warm-up Engine runs normally at idle during warm-up but be- comes rouclh and stalls after warm-up F-43 F-44 24 1 Lack of power Performance is poor under load Maximum speed re- 1 duced I F-57 I Hesitates/Stumbles on acceleration Surges while cruising I I I 25 / Poor acceleration I Performance is poor while accelerating 1 F-61 I Flat spot occurs just after accelerator is depressed or mild jerking occurs during acceleration Unexpected, usually repetitive change in engine speed Knocking F-53 F-55 Runs rough on deceleration1Afterburn Abnormal combustion accompanied by audible "ping- ing" noise I F-67 I Engine runs rough while decelerating and abnormal combustion in exhaust system 1 30 1 High oil consumption I Oil consumption excessive I F-70 1 F-65 28 1 Fuel odor 29 / Exhaust sulfur smell 1 31 1 Poor fuel economy I Fuel economy unsatisfactory I F-71 I Gasoline odor in cabin Exhaust gas smells abnormal (rotten egg smell) F-69 F-70 Gartner Banana

MECHANICAL SYSTEM TEST TIME LAG TEST If the selector lever is shifted while the engine is idling, there will be a certain time lapse, or time lag, before shock is felt. This step checks this time lag for checking condition of the 1-2, N-R/2-3 and N-D L/ accumulators, front, rear and one-way clutches, 2nd brake band, and low and reverse brake. Preparation Perform the preparation procedure shown in the STALL TEST. (Refer to page K-22.) Procedure IDLE SPEED 1. Start the engine and check the idle speed in P range. (Refer to section F.) u Idle speed: 750--850 rpm 2. Shift from N range to D range. 3. Use a stopwatch to measure the time it takes from shifting until shock is felt. 4. Shift the selector to N and let the engine idle for 1 minute or more to cool the ATF. 5. Do the time lag test for the following shifts in the same manner. Make three measurements for each test and average the results. (1) N 4 D range (Normal mode) (2) N -+ D range (Hold mode) (3) N -+ R range .......................................... Specified time lag: N -t D range 0.5-46 second ..................... N -+ R range ... .............. 0.75-0.85 second Evaluation of Time Lag Test - I Condition N -c D (Hold) shifting More than specification Less than specification More than specification Less than specification N -+ R shifting I More than specification Less than specification Rear clutch slipping Excessive line pressure - lnsufficient line pressure Rear clutch slipping 2nd brake band slipping - 1-2 accumulator not operating properly Excessive line pressure lnsufficient line pressure Low and reverse brake slipping Front clutch slipping N-R/2-3 accumulator not operating properly Excessive line pressure K-25 Gartner Banana

CRUISE CONTROL SYSTEM T Inspection Procedure Self-diagnosis 1. Connect a 1.4W test light between terminals D and F, of the cruise control unit connector. Note There is no wire in terminal D of the connector. Push the test light through the connector and touch the cor- responding pin on the control unit. 2. Turn the ignition switch to ON. 3. Turn the cruise control on by pressing the MAlN switch. The MAlN indicator light will come on. 4. Press and hold the RESUMEIACCEL switch for more than 3 seconds. The test light will illuminate for 3 se- conds and go out for 2 seconds. 5. The on-board diagnosis system is activated and the test light will flash if there is a problem. Refer to the chart be- low to obtain the problem code number. Note The cruise control system will not operate in self-diag- nosis mode. 6. After retrieving the code(s), drive the vehicle at more than 16 kmlh (10 MPH) or press the MAlN switch to deactivate self-diagnosis. The MAlN indicator light will go off. 7. Follow the action corresponding to the problem code. Service Code Table If there are two or more problems in the system, the problem with the highest priority will be indicated. Priority Pattern of output signal ON 2 OFF n 4 OFF ON 5 OFF I No. Code I Possible cause Defective wiring (Cruise actuator- Cruise control unit, Stoplight switch-Cruise control unit) 01 Defective actuator Defective stoplight switch (For O5 1 Defective wiring (Fuse - Cruise control unit) Both stoplight and brake switch (for 07 vehicle and cruise) are ON simulta- neously Defective SETICOAST, or RESUMEIACCEL switch l5 1 Defective cruise control unit Action Repair harness lnspect actuator (Refer to page T-107) Inspect brake switch (Refer to page T-105) Replace fuse Repair harness Inspect stoplight and brake switch (Refer to pages T-105 and T-56) Inspect cruise control switch (Refer to page T-106) Go to troubleshooting Gartner Banana

AUDIO OPERATION DESCRIPTION Type 1 Five seconds after completing an operation that is shown on the display, the indicator returns to clock u mode. Radio control 1 Headrest speaker control Bass control knob Treble control knob I Manual tuning button Scan tuning button r- button Auto memory tuning button Illustration Operation 1. Press knob to turn power ON/OFF 2. Turn knob clockwise - Volume up Turn knob counterclockwise-Volume down To increase volume, turn HRSP clockwise I 1. Press BASSiTREBLE 2. For more lows, turn BASSRREBLE clockwise For less lows, turn BASSRREBLE counterclockwise 1. Pull BASSiTREBLE 2. For more highs, turn BASSRREBLE clockwise For less highs, turn BASSRREBLE counterclockwise To shift sound to left, turn BALANCE clockwise To shift sound to right, turn BALANCE counterclockwise Press button to change bands AM, FMl, and FM2 modes are alternatively selected as shown When stereophonic broadcasting is received in FM1 or FM2 mode, ST is shown on display PressV or A less than 0.5 second to manually tune stations When pressed until beep in heard (0.5 sec.), a first receivable frequency is tuned Press A for higher frequency Press V for lower frequency Press SCAN button and searching of station starts from lowest frequency of selected band When receivable frequency is tuned, frequency flashes on display for 5 seconds; then searching starts again Press button again while frequency is flashing to memorize station Six buttons are equipped to set frequencies of up to six stations each for AM, FM, and FM2 1. Setting frequency Select frequency and press a preset button Hold button until deep is heard (1.5 sec.) and setting is complete 2. Tuning to preset frequency Press desired preset button for less than 1.5 seconds 1. Setting frequency Press and hold AUTO-M button until beep is heard (1.5 sec.) Searching starts from lowest frequency within selected band and six strongest stations are selected and memorized 2. Tuning to preset frequency Press AUTO-M button for less than 1.5 seconds and memorized fre- quencies are tuned one by one with each press When preset frequencies is less than six,R appears on display 35UOTX-046 Gartner Banana

AUDIO Cassette tape player Name Tape slot Playlreverse button Stopleject button APC (automatic program control) button Dolby noise reduction bunon*' Fast forwardlrewind button lllustration Operation Insert a tape into tape slot to begin tape operation When tape is inserted, system determines tape type by identification hole in cassette pack; if metal or chromium tape, METAL is shown on display Press button during tape playback to play reverse side of tape Press button during fast forwardlrewind mode to play tape Press button during modes other than tape playback or tape Player OFF to select tape mode and play tape Press button during fast forwardlrewind mode to cancel mode; select tape playback mode, if desired Press button during tape playback to stop play Press again to eject tape Press button during tape playback and APC appears on display In this condition, press FF button skip to beginning of next program Press REW button during tape playback to rewind tape to beginning of current tune APC detects silence of more than 15 seconds and skips forward to next recorded section Press button when playing tape encoded with Dolby NR Dolby alternately turns ONIOFF with each press Press REW button to rewind tape Press FF button to fast forward tape The Dolby noise reduction system is manufactured under license of the Dolby Laboratory Licensing Corporation. -,, DOLBY and 00 are registered trade marks of Dolby Laboratory Licensing Corporation. Compact disc (CD) player Caution Never use mini CDs (8 cm (3.1 in)) because they may dislodge from the adapter and damage the disc or player. Use only standard CDs (12 cm (4.7 in)). Name Illustration Disc slot Playlstop button Lightly push disc, label-side up, into slot; auto loading mechanism will take over to set disc and begin play During loading, DlSC SET flashes on display When loading completed, DlSC SET displayed Press this button while disc is being played and play will pause Press again and play will resume Press button during tape or radio mode to play loaded disc Press button to eject disc Disc SET flashes on display Press again and disc is reloaded Gartner Banana

AUDIO Name ;can button 3epeat button rrack search button Press SCAN button and beginning of tunes are played one by one (10 seconds for each) Press button during playback and scanning starts from next tune Press button during scanning and tune being scanned is played Scanning is canceled automatically when all programs in disc have been scanned Illustration Press RPT button during a tune is playing to play it repeatedly Press again to cancel repeat operation and resume normal playback Operation Press button to search for beginning of next or current program 1. PressA(up) button for less than 0.5 second during disc play and be- ginning of next tune is selected and played Tunes are changed one by one with each press of button When pressed during play of last tune, first tune is replayed 2. PressV(down) button for less than 0.5 second during disc play and current tune is replayed from beginning Tunes are changed one by one with each press of button When pressed during play of first tune, last tune is replayed Press button to fast forwardheverse disc 1. Press and hold FF (up) button for more than 0.5 second and disc play position moved ahead at high speed while button pressed When last part of last tune is reached, first tune is selected and disc stops 2. Press and hold REV (down) button for opposite operation of FF button When first part of first tune reached, disc stops reversing and starts playing Clock The clock can be set while the radio or tape/CD player is ON. Illustration Clock button (clock display) HIM button (clock setup) Operation Press button to display present radio frequency or operation mode If power supply to unit is broken (burnt fuse or disconnected battery), clock setup will be canceled When clock button is pushed for 2 seconds, clock display flashes. At this point, press H button to advance hours and M button to advance minutes Press clock button again to return to normal display If clock button is pressed again while clock display is flashing and time has not been adjusted (that is, H and M buttons have not been pressed), min- utes will be set at : 00. If time before adjustment showed 30-59 minutes, time will be set at next hour For example, nn Gartner Banana

AUDIO Type 2 AWFM radio Volume control knob F Balance control knob I AM, FM buttons (power switch) - Upldown button Scan tuning button t-- Channel preset tuning button Auto memory button turning Illustration Operation Turn knob clockwise to increase volume Turn knob counterclockwise to decrease volume Turn knob clockwise to shift sound to left Turn knob counterclockwise to shift sound to right 1. With knob original position (bass control) Turn knob clockwise for more bass Turn knob counterclockwise for less bass 2. With knob pulled out (treble control) Turn knob clockwise for more treble Turn knob counterclockwise for less treble 3. To turn audio display off, press knob To turn audio display on, press knob again Press AM or FM button to turn radio power on or off (not necessary to re- move cassette tape or CD) 1. Press AM button to turn AM radio on or off AM radio mode -r AM radio off Other modes + AM radio on 2. Press FM button to move from FM1 1 to FM2 to off Press (A ) or (V ) less than 0.5 second to manually tune stations Press (A ) for higher frequency Press (V ) for lower frequency When pressed more than 0.5 second, frequency search continues until button is released Press button to begin station search from lowest frequency of selected band When receivable frequency is tuned, frequency is displayed for 8 seconds; then searching starts again Press button again while frequency is displayed to memorize station Six buttons are equipped to set frequencies of up six stations each for AM, FMl , and FM2 1. Setting frequency Select frequency and press preset button for more than 1.5 seconds 2. Tuning to preset frequency Press desired preset button for less then 1.5 seconds I. Setting frequency Press button for more than 1.5 seconds Searching starts from lowest frequency within selected band, six stron- gest stations are selected and memorized When preset frequencies are less than six, number of receivable fre- quen ies is shown on display. When there are no receivable frequen- ciesh is displayed 2. Turning to preset frequency Press button repeatedly for less than 1.5 seconds to tune memorized frequencies one by one Gartner Banana

AUDIO T Cassette Player Tape slot Name APC (automatic program control) button Illustration U~ldown button I Tape button Playlreverse button Tape eject button 7 Dolby noise reduction button 'I -- - Operation Insert a tape into tape slot to automatically begin tape operation When tape is inserted, system determines tape type by identification hole in cassette pack; if metal or chromium tape, METAL is shown on display Press button during tape playback to enter APC mode; APC appears on display In this mode, press ( A ) button to skip to beginning of next program Press (V ) button during tape playback to rewind tape to beginning of current tune When APC detects silence of more than 15 seconds, it automatically skips forward to next recorded section Press (V ) button to rewind tape; press button again to play tape Press (A ) button to fast forward tape; press button again to play tape Press button during fast forward/rewind mode to cancel mode Press button to begin play Press button during tape playback to play reverse side of tape Press button to eject cassette tape Press button when playing tape encoded with Dolby NR Dolby alternately turns on or off with each press *l The Dolby noise reduction system is manufactured under license of the Dolby Laboratory Licensing Corporation. DOLBY and 00 are registered trade marks of Dolby Laboratory Licensing Corporation. Gartner Banana

T AUDIO Compact disc (CD) player CD slot P Disc set light Repeat button Random-play button I Upldown button (rewindtfast forward lllustration r AUTO M SCAN J Operation Insert CD, player automatically pulls in CD and begins play Set light turns on when CD is inserted, turns off when CD is ejected Press RPT button while tune is playing to play it again after it finishes Press button again to cancel repeat operation and resume normal play Press RAN button to play tunes on disc in random order; RANDOM ap- pears on display Press again to cancel random operation and resume normal play Press SCAN button to play beginning of tunes one by one (10 seconds each) Press button during play to start scanning from next tune Press button during scanning to play current tune Scanning is canceled automatically when all programs in disc have been scanned Press button to stop play; press again to start To start CD while in radio or tape mode, press button with CD inserted in player Press button to eject CD 1. Press button for more than 1.5 seconds to rewind or fast forward; play will begin at point where button is released 2. Press button for 1.5 seconds or less to advance or reverse song selec- tion before or during play Press ( A ) button to advance to beginning of next song and begin Play Repeat procedure to advance one song at a time Press ( V) button once to return to beginning of current song Press button again to move to beginning of previous song 35UOTX-05: Gartner Banana