Mazda 626 Station Wagon Workshop Manual

16 Cooling system concerns overheating DESCRIPTION Engine runs at higher than normal temperature/Overheats. POSSIBLE CAUSE Improper coolant level Blown fuses Coolant leakage Excessive A/C system pressure Improper water/anti-freeze mixture Fans reverse rotation Poor radiator condition Thermostat malfunction Radiator hoses damage Condenser fan is inoperative. Improper or damaged radiator cap Main cooling fan is inoperative. Coolant overflow system malfunction Improper tension of drive belt Drive belt damage_______________ Diagnostic Pr ...

(LACK OF CONTINUITY) IS IN WIRING HARNESS (BETWEEN CUMATE CONTROL UNIT AND AIR MIX ACTUATOR) OR ELSEWHERE • Turn ignition switch to ON position. • Test voltage at following air mix actuator connector terminal E (+5 V signal). • Is voltage approximately 5 V? Yes Go to next step. No Repair wiring harness between climate control unit and air mix actuator, then go to Step 19. *11 CHECK TO SEE WHETHER MALFUNCTION (LACK OF CONTINUITY) IS IN WIRING HARNESS (BETWEEN CLIMATE CONTROL UNIT AND AIR MIX ACTUATOR) OR ELSEWHERE ...

TROUBLESHOOTING INDEX No. TROUBLESHOOTING ITEM DESCRIPTION PAGE 1 On-board diagnostic function inoperative CPU’s on-board diagnostic function does not operate. (See S-38 NO.1 ON-BOARD DIAGNOSTIC FUNCTION INOPERATIVE.) 2 Transmitter ID code cannot be reprogramed. CPU’s transmitter ID code reprogram function does not work. (See S-40 NO.2 TRANSMirrER ID CODE CANNOT BE REPROGRAMMED.) NO.1 ON-BOARD DIAGNOSTIC FUNCTION INOPERATIVE. 1 On-board diagnostic function inoperative DESCRIPTION CPU’s on-board diagnostic function does not operate. POSSIBLE CAUSE � ...

SYSTEMS.....................................................ST-2 AUTOMATIC TRANSAXLE............................. ST-2 FRONT AND REAR AXLES............................ST-2 BRAKING SYSTEM........................................ ST-3 BODY ELECTRICAL SYSTEM ...................... ST-3 ST-1 ...

See section K2 o O o O O O O O O O O O O O O Fuel hoses restriction or clogging O O O O O O o O O O o O o Injectors malfunction (Leakage or clogging, inoperative) O O o Fuel leakage from fuel system (Including insulator, injector O-ring) O O o o o o O O O O Fuel filters restriction or clogging O o o O PRC solenoid valve improper operation O o o o o o o o o O CMP sensor damaged (e.g. open or short circuit) o o o o o o o o o o Camshaft damaged 0 0 o o o 0 0 o O o OO O Improper air/fuel mixture ratio control o o o o o o o o o o o o o Exhaust system restriction or clogging o ...

Measure resistance between GND circuit at following sensor connectors and GND: • TP sensor • ECT sensor • IAT sensor • H02S Is each resistance less than 5.0 £2? Yes GND circuits are okay. Inspect constant voltage at TP sensor connector again. No Inspect for open GND circuit. NO.28 SPARK P LUG CONDITION 28 Spark plug condition DESCRIPTION • Incorrect spark plug condition POSSIBLE CAUSE Note • Inspecting spark plugs condition can determine whether problem is related to a specific cylinder or to all cyl ...

INPUT/OUTPUT SIGNALS AND RELATED CONTROLS Component Control item Line pressure control Shift control Clutch pressure direct control (Direct electric shift control) Feedback control Engine- transaxle total control Torque converter clutch control Control of climbing or descending hill On-board diagnostic function Input HOLD switch X TR switch X X X X TP sensor X X X X X Input/turbine speed sensor X ® X X X X v s s X X X X X X Brake switch X TFT sensor X X X X X X ECT sensor X X CKP sensor X X X X X MAF sensor X X X X X X Output Pressure control solenoid X X Shift solen ...