1994 MAZDA MX-5 lock

ROAD TEST K ROAD TEST A road test is necessary to inspect for problems in the different gear ranges. If a range or function tar- b geted by the road test is found to have any problem, refer to the ELECTRONIC SYSTEM COMPONENT segment or the TRANSMISSION, OIL COOLER, DRIVE PLATE, and SHIFT MECHANISM segments of this section. Do the road test only when the ATF is 50-80°C (1 22-1 76°F). D-RANGE TEST Shift Point, Shift Pattern, and Shift Shock 1. Shift the selector lever to D range and select the Normal mode. 2. Accelerate the vehicle with half-and wide open throttle opening. 3. Verify that 1-2, 2-3, and 3-4 upshifts, downshifts, and lockup are obtained. The shift points must be as shown in the D range (Normal) shift diagram. Note There is fourth gear is any of the following conditions. A The cruise control is operating, and there is an 8kmIh (5 mph} difference between the preset cruise speed and the vehicle speed. B The SET or RESUME switch is ON. There is no lockup when water temperature is below 50°C (1 22°F) or in the throttle valve closed posi- tion. 4. Check the upshifts for shift shock or slippage in the same manner. 5. While driving in overdrive, shift the selector lever to S range and verify that 4-3 downshift immediately occurs, then decelerate and verify that engine braking effect is felt in only third gear and 2nd gears. D-range (Normal) shift diagram p'yJ ..,,*sw.. LOCKUP AVAILABLE WHEN ACCELERATING AND CRUSING LOCKUP AVAILABLE WHEN COASTING 0 20 (1 2) 40 (25) 60 (37) 80 {50) 100 (63) 1 20 (75) 140 (87) 1 60 (99) VEHICLE SPEED kmlh {mph) Gartner Banana

ROAD TEST D range (Power) shift diagram = LOCKUP AVAILABLE WHEN ACCELERATING AND CRUSING LOCKUP AVAILABLE WHEN COASTING VEHICLE SPEED kmh (mph) 45UOKX-51 6. Select the Hold mode. 7. Accelerate the vehicle and check 2-3 up-and downshifts, verify that no 1st and no fourth gear is ob- tained, and verify that the 2-3 shift points are as shown in the D range (Hold) shift diagram. D-range (Hold) shift diagram 0 20 (1 2) 40 (25) 60 (37) 80 (50) 100 {63) 120 (75) 140 {87) 160 (99) VEHICLE SPEED kmlh (mph) Gartner Banana

ROAD TEST K Evaluation I No lockup shift Condition No 1-2 up or downshift No 2-3 up or downshift No 3-4 up or downshift I Stuck lockup control solenoid valve Stuck locku~ control valve Possible Cause Stuck 1-2 shift solenoid valve Stuck 1-2 shift valve Stuck 2-3 shift solenoid valve Stuck 2-3 shift valve Stuck 3-4 shift solenoid valve Stuck 3-4 shift valve Incorrect shift point I No enaine brakina effect I Worn clutches, brakes I Misadjusted throttle position sensor Sticking shift valves Excessive shift shock or slippage Noise and Vibration Drive the vehicle in fourth gear (lockup), fourth gear (no lockup), and third gear (Hold) and listen closely for any out of the ordinary noise or vibration. The torque converter, propeller shaft, and differential can be sources of abnormal noise and vibration if they are not functioning properly. Check these when searching for sources of noise and vibration. Stuck accumulators Stuck or no one-way check orifice Stuck 3-2 control solenoid valve Stuck 3-2 control valve Worn clutches, brakes, or one-way clutch Kickdown Drive the vehicle in fourth gear, third gear, and 2nd gear and check that kickdown occurs for 4-+3,4-+2, 4+1,3+2,3+1, 2+1, and that the shift points are as shown in the shift diagram. ,U (Refer to pages K-29, 30.) S-RANGE TEST Shift Pattern For this test it is not necessary to inspect shift shock and shift points, since they are almost exactly the same as those for the D-range test. However, in the D-range (Normal) shift diagram, the shift points are different. In S range, the shift patterns for Normal mode are the same. 1. Shift the selector lever to S range and select the Normal mode. 2. Accelerate the vehicle and verify that 1-2 and 2-3 up-and downshifts are obtained, and that no fourth gear and no lockup (below approx. 100 kmlh (63 mph}) are obtained. 3. While driving in S range (Normal mode) and third gear, select the Hold mode and verify that third gear is held until ihe 3-2 downshift point as shown in the S range (Hold) shift diagram is achieved. 4. Accelerate the vehicle in S range (Hold mode) and verify that 2nd gear is held. S-range (Power) shift diagram LOCKUP AVAILABLE WHEN ACCELERATING AND CRUSING LOCKUP AVAILABLE WHEN COASTING -. - VEHICLE SPEED kmlh (rnph} Gartner Banana

ROAD TEST (Hold) shift diagram LOCKUP AVAILABLE WHEN COASTING 818 718 - 618 - 518 ' 418 - 3/8 ' 218 - 118 - 018 0 20 (1 2) 40 (25) 60 (37) 80 (50) 100 (63) 120 (75) 140 (87) 160 (99) VEHICLE SPEED kmh {mph} Noise and Vibration Drive the vehicle in 2nd (Hold) and listen closely for any out of the ordinary noise or vibration. The torque converter, propeller shift, and differential can be sources of abnormal noise and vibration if they are not functioning properly. Check these when searching for sources of noise and vibration. L-RANGE TEST Shift Pattern For this test it is not necessary to inspect shift shock and shift points, since they are almost exactly the same as those for the D-range test. However, in the D-range (Normal) shift diagram, the shift points are different. ,, In L-range, the shift patterns for Normal mode are the same. 1. Shift the selector lever to L-range and select the Normal mode. 2. Accelerate the vehicle and verify that 1-2 up and downshifts are obtained, and that no third gear, no fourth gear, and no lockup are obtained. 3. Drive in 1 st gear, then decelerate and verify that engine braking effect is felt. 4. While driving in D-range (Hold mode) and third gear, shift the selector lever to L-range and verify that third gear is held until the 3-2 downshift point as shown in the L-range (Hold) shift diagram, and that 2nd gear is held until 2-1 downshift point is achieved. 5. Accelerate the vehicle in L-range (Hold mode) and verify that 1 st gear is held. L-range (Power) shift diagram LOCKUP AVAILABLE WHEN COASTING o 20 (12) 40 (25) 60 (37) 80 (50) 100 163) i 20 (75) 14dp7) 160 pgj VEHICLE SPEED kwh {mph) Gartner Banana

ROAD TEST L-range (Hold) shift diagram LOCKUP AVAILABLE WHEN COASTING 0 20 (1 2) 40 (25) 60 {37) 80 {50) 100 {63) 120 {75) 1 40 (87) 1 60 (99) VEHICLE SPEED kmh {mph) Noise and Vibration Drive the vehicle in 1 st (Hold) and listen closely for any out of the ordinary noise or vibration. The torque converter, propeller shift, and differential can be sources of abnormal noise and vibration if they are not functioning properly. Check these when searching for sources of noise and vibration. P-RANGE TEST 1. Shift into P range on a gentle slope, release the brake, and verify that the vehicle does not roll. 2. Shift into P range while driving the vehicle at 4 kmlh (2.5 mph) maximum on a level surface, and verify that the vehicle stops. Gartner Banana

K ROAD TEST Vehicle Speed at Shiftpoint Table Note Because of mechanical time lag, vehicle speed at shift during full-throttle is 5--6 kmlh (34 mph} higher than the specified vehicle speed. Mode POWER HOLD POWER HOLD -- POWER HOLD Wide open throttle Throttle condition Shift I Vehicle speed kmlh {rnph} - - D3 lockup ON DR-DA Wide open throttle I D*+Do 98-1 06 (61 -65) 152-1 62 {95--100) 58-64 436-39) J 33--46 {21-28) 5&76 {36--47) 82-1 1 0 {5 1 -68) 74-1 00 (46-62) 28--34 {I 7-21) 11-17 {7-10) 14-1 50 (87-93) 92-1 00 {57--62) 4248 (26-29) Half throttle Closed throttle position Kickdown (Wide open throttle) ,- . Dl-02 D2+D3 D344 D4 lockup ON D44'3 D3-+D1 D4-+D3 D3+D2 Ds-cDi Half throttle Closed throttle position Kickdown (Wide open throttle) All positions Wide open throttle Half throttle Closed throttle position Kickdown (Wide open throttle) All positions " 03-04 Dl432 D2-+D3 D3 lockup ON D3-04 D4+D3 D3+D1 D4+03 D3+D2 D2-4 D1-+D2 D2+D3 D4-rD3 D3+D1 D3 lockup ON %--cS:! s2-*s3 S3 lockup ON - - s142 s2+s3 Sg lockup ON Wide open throttle Half throttle Closed throttle position Kickdown (Wide open throttle) All positions s3-ts1 s3-*s2 s241 s3+s2 Sg lockup ON 152-1 62 {94-100) 44--55 (2&34) 99-1 08 {56-66) 98-1 06 {61-65) 140-164 (87-1 01) 28-34 {I 7-2 1 ) 11-1 7 {7-10) 14G150 {87-93) 92-1 00 (5742) 4248 {26--29) 27-33 {I 7-20) 35--45 (22-27) 152-1 58 {94-97) 12-18 {Gll} 95-1 05 (59-45) 58-64 (36-39) 1 00-1 08 {62--66) 98-1 05 (61 -65) 44-55 {28-34) 90--108 {56--67) 94-1 06 (58-66) 11-1 7 (7-1 0) 92-1 00 {57-42) 4248 (2629) 99-1 05 I61-65) 95--105 {59--65) L1-4-2 L142 . L3+L2 L24-1 L3-+L2 L2-h L241 L3 lockup ON d 5662 (35-38) 44--55 (27-34) 96-1 04 {60-64} 11-17 (7-lo} 99-105 {61--65) 4248 (26-29) 3-1 (21-25) 95-1 05 {59-65) i Gartner Banana

K ELECTRICAL SYSTEM COMPONENTS Replacement 1. Disconnect the negative battery cable. 2. On level ground, jack up the vehicle and support it evenly on safety stands. 4 3. Disconnect the vehicle speed pulse generator connec- tor. 4. Remove the vehicle speed pulse generator. 5. Install the new vehicle speed pulse generator. Tightening torque: 7.9--10.7 N-m (80-110 kgfecm, 70-95.4 in-lbf) 6. Connect the vehicle speed pulse generator connector. 7. Connect the negative battery cable. 1-2 SHIFT, 2-3 SHIFT, 3-4 SHIFT, 3-2 CONTROL SOLENOID VALVE Inspection 1. On level ground, jack up the vehicle and support it evenly on safety stands. 2. Disconnect the solenoid valve connector. d 3. Measure resistance between each terminal and ground. Resistance: l3-27a 4. If not correct, check the wiring harness for an open or short circuit. Replace the solenoid valve. Solenoid valve 1-2 shift 2-3 shift 3-4 shift 3-2 control LOCKUP CONTROL SOLENOID VALVE lnspection 1. Disconnect the solenoid valve connector. 2. Measure the resistance between the terminals. Terminal C D - A B Resistance: l3-2Sil 3. If not correct, replace the solenoid valve. Gartner Banana

TRANSMISSION K 1. Shift rod 12. Lockup solenoid connector 2. Undercover 13. Oil pipe 3. Performance rod 14. Harness 4. Exhaust pipe 15. Power plant frame (PPF) 5. Propeller shaft Removal Note ............. page K-48 Removal .................... section L 1 6. Undercover 6. Speedometer cable 17. Torque converter Nut - 7. Vacuum hose 18. Starter u 8. Parklneutral switch connector 19. Transmission mount bolt 9. Vehicle speed pulse generator connector 20. Transmission 10. Solenoid connector Removal Note ............. page K-49 11. ATF thermosensor connector Gartner Banana