Check the APP sensor signal circuit for short. Is a problem found? YES – Repair open in the signal wire between ECM and the APP sensor 2. NO – Replace the APP sensor 2. NOTICE The battery power supply short circuit to 5 V power supply damages the ECM.

DTC P0236: Manifold Absolute Pressure (MAP) System Performance Check the ''On Board Diagnostic (OBD) System Check''. Was the ''OBD System Check'' performed? YES – Go to step 2. NO – Go to OBD System Check. Check the DTC. Are there any other (beside DTC P0236) being output? YES – Go to relevant DTC chart. NO – Go to step 3. Turn the ignition switch ON (II). Check the MAP with the scan tool. Is about atmospheric pressure indicated? YES – Go to step 5. NO – Go to step 7. Start the engine at idling. Check the MAP with the scan tool. Is about 20 – 30 kPa (150 – 225 mmHg, 5.9 – 8.9 in. Hg) indicated? YES – Intermittent failure, system is OK at this time. Check for poor connections or loose wires at the MAP sensor and at the ECM. NO – Go to step 7. Check for the following conditions: Damaging MAP sensor The vacuum hose work at the MAP sensor for leaks The PCV system vacuum leaks An incorrect PCV valve Vacuum leaks EGR valve flange and pipes Intake manifold vacuum leaks aaa