|
|
NO.12 LACK/LOSS OF POWER-ACCELERATION/CRUISE (MZI-3.7) DIAGNOSTIC PROCEDURE STEP INSPECTION RESULTS ACTION 1 Verify the following: Vacuum connection Restriction in intake-air system (such No air leakage from intake-air system No restriction of intake-air system Proper sealing of intake manifold and Fuel quality (such as proper octane, Yes Go to the next step. No Service if necessary. Repeat Step 1. 2 Connect the M-MDS to the DLC-2. Yes DTC is displayed: No No DTC is displayed: Go to the next step. 3 Is the engine overheating? Yes Go to symptom troubleshooting "No. 17 No Go to the next step. 4 Connect the M-MDS to the DLC-2. Yes Go to the next step. No APP1, APP2, APP3 PIDs: Inspect if output signal accelerator pedal position sensor changes smoothly. RPM PID: Inspect CKP sensor and related wiring harness for vibration or intermittent open/short circuit or both. MAF PID: Inspect for intermittent open circuit of MAF sensor and related wiring harness. TP1, TP2 PID: Inspect if output signal TP sensor changes smoothly. IAT PID: Inspect for air suction in intake-air system. If normal, inspect intermittent short circuit of IAT sensor and related wiring harnesses.
2008 Mazda CX-9 Grand Touring 2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:10:05 AM Page 58 © 2005 Mitchell Repair Information Company, LLC. |