Mazda 626 Station Wagon, Workshop Manual, Page: 335 / 577

ON-BOARD DIAGNOSTIC
STEP
INSPECTION ACTION
5 CHECK OPERATION OF EACH VALVE AND
EACH SPRING
• Turn ignition key to OFF.
• Remove control valve body.
• Disassemble control valve body.
• Is each valve operation okay and is return
spring okay?
(See K2-46 CONTROL VALVE BODY
REMOVAL.)
(See K2-46 CONTROL VALVE BODY
INSTALLATION.)
(See ATX Workshop Manual FN4A-EL
[1623-10-98E].)
Yes Replace ATX, then go to next step
(See K2-41 AUTOMATIC TRANSAXLE
REMOVAL/INSTALLATION.)
No Repair or replace shift valve and return spring, then go to
next step.
(See K2-46 CONTROL VALVE BODY REMOVAL.)
(See K2-46 CONTROL VALVE BODY INSTALLATION.)
(See ATX Workshop Manual FN4A-EL [1623-10-98E].)
6 VERIFY TROUBLESHOOTING OF DTC P0772
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from memory using NGS tester.
• Start engine.
• Warm up ATX.
• Access ATFT, 4GR, D SW, RPM, TURBINE,
VS, THOP, and SHIFT E PIDs using NGS
tester.
• Drive the vehicle under the following
conditions with following each throttle
conditions.
— ATFT PID: 20 * C {68 * F} or above
— 4GR PID: ON
— DSW PID : ON
Yes Replace PCM, then go to next step.
(See Section F1.)
— RPM PID: 450 rpm or above
— TURBINE PID: within 225— 4,988 rpm
— VS PID: below 70 km/h {43 mph} (4GR
only).
— SHIFT E PID: OFF (TCC no operation).
• Throttle conditions
— Throttle opening angle within
3.125 — 6.25% and 3 seconds or more
have passed
— Throttle opening angle above 6.25% and
10 seconds or more have passed
— Throttle opening angle closed throttle
position and 10 seconds or more have
passed
• Is same DTC present?
No Go to next step.
7 VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure”.
Yes Go to applicable DTC inspection.
(See K2-61 AFTER REPAIR PROCEDURE.)
• Is there any DTC present?
No Troubleshooting completed.
K 2-128