Pgm-Fi System: Diagnosis Honda CR-V II

DTC Troubleshooting

DTC INDEX

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1. Turn the ignition switch ON (II).
2. Check the MAP with the scan tool or the HDS. Is about 101 kPa (760mmHg, 30 in.Hg) or 2.9 V indicated? YES - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and at the ECM/PCM. NO - Go to step 3.
3. Turn the ignition switch OFF.
4. Disconnect the MAP sensor 3P connector.
5. Turn the ignition switch ON (II).
6. Measure voltage between MAP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V? YES - Go to step 8 . NO - Go to step 7.
7. Measure voltage between MAP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V? YES - Repair open in the wire between the ECM/PCM (A21) and the MAP sensor. NO - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck (see «ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING»(ref-171385-S32387647222005020300000) ). If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.
8. Check the MAP with the scan tool or the HDS. Is 2 kPa (15 mmHg, 0.6 in.Hg) or less, or 0 V indicated? YES - Go to step 9. NO - Replace the MAP sensor (see «THROTTLE BODY DISASSEMBLY/REASSEMBLY»(ref-171389-S03058078252005020300000) ).
9. Turn the ignition switch OFF.
10. Disconnect ECM/PCM connector A (31P).
11. Check for continuity between MAP sensor connector terminal No. 2 and body ground. Is there continuity? YES - Repair short in the wire between the ECM/PCM (A19) and the MAP sensor. NO - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck (see «ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING»(ref-171385-S32387647222005020300000) ). If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM.

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1. 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 with no load.
2. Check the MAP with the scan tool or the HDS. Is more than 101 kPa (760 mmHg, 30 in.Hg), or more than 2.9 V indicated? YES - Go to step 3 NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and at the ECM/PCM.
3. Turn the ignition switch OFF.
4. Disconnect the MAP sensor 3P connector.
5. Connect MAP sensor 3P connector terminals No. 2 and No. 3 with a jumper wire
6. Turn the ignition switch ON (II).
7. Check the MAP with the scan tool; or the HDS. Is more than 101 kPa (760 mmHg, 30 in.Hg), or more than 2.9 V indicated? YES - Go to step 8. NO - Replace the MAP sensor (see «THROTTLE BODY DISASSEMBLY/REASSEMBLY»(ref-171389-S03058078252005020300000) ).
8. Remove the jumper wire.
9. Measure voltage between MAP sensor 3P connector terminals No. 1 and No. 3. Is there about 5 V? YES - Go to step 10. NO - Repair open in the wire between the ECM/PCM (A11) and the MAP sensor.
10. Turn the ignition switch OFF.
11. Connect ECM/PCM connector terminals A11 and A19 with a jumper wire.
12. Turn the ignition switch ON (II).
13. Check the MAP with the scan tool or the HDS. Is more than 101 kPa (760 mmHg, 30 in.Hg), or more than 2.9 V indicated? YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck (see «ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING»(ref-171385-S32387647222005020300000) ). If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM. NO - Repair open in the wire between the ECM/PCM (A19) and the MAP sensor.

DLC Circuit Troubleshooting

If the ECM/PCM does not communicate with the scan tool, HDS, or I/M test equipment, do this troubleshooting procedure.

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1. Measure voltage between DLC terminal No. 16 and body ground. Is there battery voltage? YES - Go to step 2. NO - Repair open in the wire between DLC terminal No. 16 and the No. 9 BACK UP (10A) fuse in the under-hood fuse/relay box.
2. Measure voltage between DLC terminals No. 4 and No. 16. Is there battery voltage? YES - Go to step 3. NO - Repair open in the wire between DLC terminal No. 4 and body ground (G45).
3. Measure voltage between DLC terminals No. 5 and No. 16. Is there battery voltage? YES - Go to step 4. NO - Repair open in the wire between DLC terminal No. 5 and the ECM/PCM (E3).
4. Turn the ignition switch ON (II).
5. Measure voltage between DLC terminals No. 5 and No. 7 Is there 8.5 V or more? YES - Go to step 10 . NO - Go to step 6.
6. Turn the ignition switch OFF.
7. Disconnect ECM/PCM connector E (31P). Make sure the scan tool or the HDS is disconnected from the DLC.
8. Check for continuity between DLC terminal No. 7 and body ground. Is there continuity? YES - Repair short to ground in the wire between DLC terminal No. 7 and the ECM/PCM (E23). After repairing the wire, check the DTC with the scan tool or the HDS, and go to the indicated DTC's Troubleshooting. NO - Go to step 9.
9. Check for continuity between DLC terminal No. 7 and ECM/PCM terminal E23. Is there continuity? YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck (see «ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING»(ref-171385-S32387647222005020300000) ). If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM. NO - Repair open in the wire between DLC terminal No. 7 and the ECM/PCM (E23). After repairing the wire, check the DTC with the scan tool or the HDS, and go to the indicated DTC's Troubleshooting.
10. Turn the ignition switch OFF.
11. Disconnect ECM/PCM connector E (31P). Make sure the scan tool or the HDS is disconnected from the DLC.
12. Turn the ignition switch ON (II).
13. Measure voltage between DLC terminals No. 5 and No. 7. Is there 0V? YES - Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck (see «ECM/PCM UPDATING AND SUBSTITUTION FOR TESTING»(ref-171385-S32387647222005020300000) ). If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM. NO - Repair short to power in the wire between the DLC terminal No. 7 and the ECM/PCM (E23). After repairing the wire, check the DTC with the scan tool or the HDS, and go to the indication DTC's Troubleshooting.

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1. Relieve the fuel pressure (see «FUEL PRESSURE RELIEVING»(ref-171636-S23508787602005021500000) ).
2. Disconnect the connectors from the injectors (A), then remove the ground cable (B) and the harness holder (C).
3. Disconnect the quick-connect fitting (D).
4. Remove the fuel rail mounting nuts (E) from the fuel rail (F).
5. Remove the injector clip (G) from the injector.
6. Remove the injector from the fuel rail.
7. Coat the new O-rings (A) with clean engine oil, and insert the injectors (B) into the fuel rail (C).
8. Install the injector clip (D).
9. Coat the injector O-rings (E) with clean engine oil.
10. Install the injectors in the injector base (F).
11. Install the fuel rail mounting nuts.
12. Connect the connectors on the injectors, then install the ground cable and the harness holder.
13. Connect the quick-connect fitting.
14. Turn the ignition switch ON (II), but do not operate the starter. After the fuel pump runs for about 2 seconds, the fuel pressure in the fuel line rises. Repeat this two or three times, then check for fuel leakage.