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DTC Troubleshooting

DIAGNOSTIC PROCEDURES CHART

Step Action YES NO
1  Was "Engine and Emission Control System Check" performed?  Go to Step 2. Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2  Throttle actuator drive circuit check 
  1. Confirm that ignition mode of keyless push start system is "OFF".
  2. Disconnect "C01", "E01" and throttle body assembly connectors.
  3. Check for proper terminal connection to "C01", "E01" and throttle body assembly connectors.
  4. If connections are OK, check the following points.
    • Resistance of "B1" and "B2" circuits: less than 1 Ω
    • Resistance of "B1" and "B2" circuits between throttle body assembly connector and ground: infinity
    • Resistance between "B1" circuit terminal and other terminals at throttle body assembly connector: infinity
    • Resistance between "B2" circuit terminal and other terminals at throttle body assembly connector: infinity
    • Voltage of "B1" circuit: 0 - 1 V (with ignition mode of keyless push start system in "ON")
    • Voltage of "B2" circuit: 0 - 1 V (with ignition mode of keyless push start system in "ON")

Are they in good condition? 		 Go to Step 3. Repair or replace defective wire harness.
3  Throttle body assembly check 
  1. Check throttle body for performance, see ELECTRIC THROTTLE BODY ASSEMBLY ON-VEHICLE INSPECTION .

Is it in good condition? 		 Replace ECM and recheck DTC, see ECM REMOVAL AND INSTALLATION . Replace throttle body assembly, see THROTTLE BODY ASSEMBLY REMOVAL AND INSTALLATION .
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