DTC P0521: EOP Sensor Range/Performance Problem Honda Civic VII рестайлинг

Special Tools Required

1. Pressure gauge adapter 07NAJ-P07010A
2. A/T low pressure gauge w/panel 07406-0070300
3. A/T pressure hose 07406-0020201
4. A/T pressure hose, 2,210 mm 07MAJ-PY4011A
5. A/T pressure adapter 07MAJ-PY40120
6. Oil pressure hose 07ZAJ-S5A0200

Scheme 698

1. Reset the ECM with the HDS.
2. Check the engine oil level. Is the level OK? YES - Go to step 3. NO - Adjust the engine oil to the proper level.
3. Start the engine, and check the idle. Is it normal (700-800 rpm)? YES - Go to step 4. NO - Replace the VTEC solenoid valve assembly (see «VTEC Solenoid Valve Removal/Inspection»(ref-176533-S35113039902005050600000) ).
4. Start the engine. Hold the engine speed at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
5. Check for Temporary DTCs with the HDS. Is DTC P0521 indicated? YES - Go to step 6. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the EOP sensor and the ECM.
6. Turn the ignition switch OFF.
7. Remove the EOP sensor (A), and install the special tools as shown, then install the EOP sensor (A) in the pressure gauge adapter (B). NOTE: Install the part in the reverse order of removal with a new O-ring.
8. Start the engine, and check the oil pressure. Is there more than 49 kPa (0.5 kgf/cm 2 , 7.1 psi)? YES - Replace the EOP sensor (see «EOP Sensor Replacement»(ref-176533-S17727344232005050600000) ). NO - Replace the VTEC solenoid valve assembly (see «VTEC Solenoid Valve Removal/Inspection»(ref-176533-S35113039902005050600000) ).

Scheme 699

Scheme 700

Scheme 701

1. Reset the ECM with the HDS.
2. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
3. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0522 indicated? YES - Go to step 4. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the EOP sensor and the ECM.
4. Turn the ignition switch OFF.
5. Disconnect the EOP sensor 3P connector.
6. Turn the ignition switch ON (II).
7. Measure voltage between EOP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V? YES - Go to step 9. NO - Go to step 8.
8. Measure voltage between ECM connector terminals A10 and A20. Is there about 5 V? YES - Repair open in the wire between the ECM (A20) and the EOP sensor. NO - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck (see «ECM UPDATING AND SUBSTITUTION FOR TESTING»(ref-176531-S13764864602005050600000) ). If the symptom/indication goes away with a known-good ECM, replace the original ECM (see «HOW TO SUBSTITUTE OR REPLACE THE ECM»(ref-176531-S19987328622005050600000) ).
9. Turn the ignition switch OFF.
10. Wait for 1 minute. If the radiator fan is running, wait for 1 minute after the radiator fan stops.
11. Disconnect ECM connector C (22P).
12. Check for continuity between EOP sensor 3P connector terminal No. 2 and body ground. Is there continuity? YES - Repair short in the wire between the ECM (C3) and the EOP sensor. NO - Go to step 13.
13. Substitute a known-good EOP sensor, then recheck (see «EOP Sensor Replacement»(ref-176533-S17727344232005050600000) ).
14. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0522 indicated? YES - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck (see «ECM UPDATING AND SUBSTITUTION FOR TESTING»(ref-176531-S13764864602005050600000) ). If the symptom/indication goes away with a known-good ECM, replace the original ECM (see «HOW TO SUBSTITUTE OR REPLACE THE ECM»(ref-176531-S19987328622005050600000) ). NO - Replace the EOP sensor (see «EOP Sensor Replacement»(ref-176533-S17727344232005050600000) ).

Scheme 702

Scheme 703

Scheme 704

Scheme 705

Scheme 706

1. Reset the ECM with the HDS.
2. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on, then let it idle.
3. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0523 indicated? YES - Go to step 4. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the EOP sensor and the ECM.
4. Turn the ignition switch OFF.
5. Disconnect the EOP sensor 3P connector.
6. Turn the ignition switch ON (II).
7. Measure voltage between EOP sensor 3P connector terminal No. 2 and body ground. Is there about 5 V? YES - Go to step 8. NO - Go to step 10.
8. Measure voltage between EOP sensor 3P connector terminal No. 1 and body ground. Is there about 5 V? YES - Go to step 9. NO - Repair open in the wire between the ECM (A20) and the EOP sensor.
9. Measure voltage between EOP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V? YES - Go to step 15. NO - Repair open in the wire between the ECM (A10) and the EOP sensor.
10. Turn the ignition switch OFF.
11. Wait for 1 minute. If the radiator fan is running, wait for 1 minute after the radiator fan stops.
12. Disconnect ECM connector C (22P).
13. Connect EOP sensor connector terminal No. 2 to body ground with a jumper wire.
14. Check for continuity between ECM connector terminal C3 and body ground. Is there continuity? YES - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck (see «ECM UPDATING AND SUBSTITUTION FOR TESTING»(ref-176531-S13764864602005050600000) ). If the symptom/indication goes away with a known-good ECM, replace the original ECM (see «HOW TO SUBSTITUTE OR REPLACE THE ECM»(ref-176531-S19987328622005050600000) ). NO - Repair open in the wire between the ECM (C3) and the EOP sensor.
15. Substitute a known-good EOP sensor, then recheck (see «EOP Sensor Replacement»(ref-176533-S17727344232005050600000) ).
16. Check for Temporary DTCs or DTCs with the HDS. Is DTC P0523 indicated? YES - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck (see «ECM UPDATING AND SUBSTITUTION FOR TESTING»(ref-176531-S13764864602005050600000) ). If the symptom/indication goes away with a known-good ECM, replace the original ECM (see «HOW TO SUBSTITUTE OR REPLACE THE ECM»(ref-176531-S19987328622005050600000) ). NO - Replace the EOP sensor (see «EOP Sensor Replacement»(ref-176533-S17727344232005050600000) ).