LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> On-Board Diagnostic - Engine Control System (1 Of 5) >> DTC P0172-00: Fuel Trim System Too Rich >> Troubleshooting Diagnostic Procedure >> Intention of troubleshooting procedure

Intention of troubleshooting procedure

STEP INSPECTION RESULTS ACTION
1 PURPOSE: DETERMINE INTEGRITY OF FUEL PUMP CONTROL MODULE Yes Replace the fuel pump control module, then go to Step 13.
(See FUEL PUMP CONTROL MODULE REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
2 PURPOSE: DETERMINE INTEGRITY OF FUEL PUMP UNIT Yes Replace the fuel pump unit, then go to Step 13.
(See FUEL PUMP UNIT REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
3 PURPOSE: DETERMINE INTEGRITY OF FUEL INJECTOR Yes Replace the fuel injector, then go to Step 13.
(See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
4 PURPOSE: DETERMINE INTEGRITY OF PURGE SOLENOID VALVE Yes Replace the purge solenoid valve, then go to Step 13.
(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
5 PURPOSE: DETERMINE INTEGRITY OF MAF SENSOR Yes Replace the MAF sensor/IAT sensor No. 1, then go to Step 13.
(See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 1 REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
6 PURPOSE: AIR CLEANER ELEMENT Yes Inspect the air cleaner element. (See AIR CLEANER ELEMENT INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
  • Go to the next step.
No Go to the next step.
7 PURPOSE: DETERMINE INTEGRITY OF MAP SENSOR Yes Replace the MAP sensor/IAT sensor No. 2, then go to Step 13.
(See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO. 2 REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
8 PURPOSE: DETERMINE INTEGRITY OF ELECTRIC VARIABLE VALVE TIMING DRIVER Yes Replace the electric variable valve timing motor/driver, then go to Step 13.
(See ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
9 PURPOSE: DETERMINE INTEGRITY OF ELECTRIC VARIABLE VALVE TIMING MOTOR Yes Replace the electric variable valve timing motor/driver, then go to Step 13.
(See ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
10 PURPOSE: DETERMINE INTEGRITY OF ELECTRIC VARIABLE VALVE TIMING ACTUATOR Yes Replace the electric variable valve timing actuator, then go to Step 13.
(See ELECTRIC VARIABLE VALVE TIMING ACTUATOR, HYDRAULIC VARIABLE VALVE TIMING ACTUATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
11 PURPOSE: DETERMINE INTEGRITY OF OCV Yes Replace the OCV, then go to Step 13.
(See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
12 PURPOSE: DETERMINE INTEGRITY OF A/F SENSOR Yes Replace the A/F sensor, then go to the next step.
(See AIR FUEL RATIO (A/F) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
13 PURPOSE: VERIFICATION OF VEHICLE REPAIR COMPLETION Yes Repeat the inspection from Step 1.
No DTC troubleshooting completed.