DTC Troubleshooting

WARNING: This page is about a different car, the 2011 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC INFORMATION AND PROCEDURES REFERENCE CHART

Step	Action	YES	NO
1	Was "Engine Basic Inspection" performed?	Go to Step 2.	Go to ENGINE BASIC INSPECTION .
2	Was "Engine and Emission Control System Check" performed?	Go to Step 3.	Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
3	DTC check Is there DTC(s) other than P050A and P050B?	Go to applicable DTC(s).	Go to Step 4.
4	Air intake system check Check air intake system for clogging and air inhabit. Is it in good condition?	Go to Step 5.	Repair or replace defective parts.
5	PCV system check Check PCV system parts or system. PCV valve: Refer to PCV VALVE INSPECTION . PCV hose: Refer to PCV HOSE INSPECTION . Are they in good condition?	Go to Step 6.	Repair or replace defective parts.
6	Exhaust system check Check exhaust system. Refer to EXHAUST SYSTEM CHECK . Is it in good condition?	Go to Step 7.	Repair or replace defective parts.
7	Throttle body assembly check Check throttle body assembly. Throttle actuator: ELECTRIC THROTTLE BODY ASSEMBLY ON-VEHICLE INSPECTION TP sensor: ELECTRIC THROTTLE BODY ASSEMBLY ON-VEHICLE INSPECTION Are they in good condition?	Go to Step 8.	Replace throttle body assembly.
8	ECT sensor circuit and performance check Check ECT sensor for circuit and performance according to Step 3 and 4 under DTC P0116/P0125/P0128 . Is it in good condition?	Go to Step 9.	Repair or replace defective parts of wire harness.
9	Ignition system check Check ignition system parts or system. Ignition system: Ignition timing: Ignition spark: Are they in good condition?	Go to Step 10.	Repair or replace defective parts.
10	EVAP system check Check EVAP system parts or system. Refer to EVAP CANISTER PURGE INSPECTION . Are they in good condition?	Go to Step 11.	Repair or replace defective parts.
11	Engine mechanical system check Check engine mechanical parts or system. Engine compression: Refer to COMPRESSION CHECK . Engine vacuum: Refer to ENGINE VACUUM CHECK . Valve clearance: Refer to VALVE CLEARANCE INSPECTION AND ADJUSTMENT . Valve timing: Refer to TIMING CHAIN COVER REMOVAL AND INSTALLATION . Are they in good condition?	Substitute a known-good ECM and recheck DTC	Repair or replace defective parts.