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Home >> Mazda >> 1994 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - N4A-El/Hl & NC4A-El >> Self-Diagnosis (1994 MIATA Only) >> Retrieving Fault Codes >> Retrieval Procedures

Retrieval Procedures

  1. Turn ignition on. Code 88 should flash and buzzer should sound for 3 seconds. If 88 does not flash, check main relay and terminals 2S and 2Q of Powertrain Control Module Transmission (PCMT) for open or short.
  2. If 88 flashes and buzzer sounds continuously for more than 20 seconds, check wiring to 1C terminal of PCMT for open or short. Replace PCMT if necessary and retest.
  3. Note code numbers. See FAULT CODES table. See appropriate trouble code chart. Make necessary repairs. After repairs, disconnect negative battery cable for 5 seconds. Connect negative battery cable and retest system.
  4. Remove OEM tester and road test vehicle at 31 MPH. Depress accelerator fully, to activate kick down, then stop vehicle gradually. Reconnect OEM tester to DLC. Turn ignition on and check for trouble codes.
  5. If transmission problems are still present or no trouble codes are stored, see appropriate ELECTRICAL COMPONENT TESTS  .
FAULT CODES

Code No. Component Or Circuit Affected
06 Vehicle Speed Sensor Or Circuit
12 Throttle Position Sensor Or Circuit
55 Pulse Generator Or Circuit
60 1-2 Shift Solenoid Valve Or Circuit
61 2-3 Shift Solenoid Valve Or Circuit
62 3-4 Shift Solenoid Valve Or Circuit
63 Lock-Up Control Solenoid Valve Or Circuit
64 3-2 Control Solenoid Valve Or Circuit