Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

NO. 22 NO ENGINE BRAKING IN 1GR POSITION OF M RANGE [AW6A-EL] DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	Do the following symptoms occur concurrently? Engine flares up or slips during acceleration Engine flares up or slips when shifting	Yes	Go to No. 14 "NO. 14 ENGINE FLARES UP OR SLIPS WHEN UPSHIFTING OR DOWNSHIFTING ", or No. 15 "NO. 15 ENGINE FLARES UP OR SLIPS WHEN ACCELERATING VEHICLE ".
1		No	Go to the next step.
2	Stop the engine. Inspect following solenoids. (See SOLENOID VALVE INSPECTION .) Shift solenoid A Shift solenoid B Are the normal?	Yes	Inspect the ATF condition. If a large amount of metal specks are found, replace the transaxle. (See AUTOMATIC TRANSAXLE REMOVAL/INSTALLATION .) If a large amount of metal specks are not found, replace the control valve body. (See CONTROL VALVE BODY REMOVAL/INSTALLATION .)
2		No	Replace the control valve body. (See CONTROL VALVE BODY REMOVAL/INSTALLATION .)
3	Verify test results. If normal, return to the diagnostic index to service any additional symptoms. If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. If the vehicle is repaired, troubleshooting completed. If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM.