DTC P0365: CMP Sensor No Signal

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine.
Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0365 indicated?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CMP sensor and the ECM.
Turn the ignition switch to LOCK (0).
Disconnect the CMP sensor 3P connector.
Turn the ignition switch to ON (II).
Measure the voltage between CMP sensor 3P connector terminal No. 3 and body ground.

Fig 1: Measuring Voltage Between CMP Sensor 3P Connector Terminal No. 3 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 9.

NO -Repair open in the wire between the CMP sensor and PGM-FI main relay 1 (Fl MAIN), then go to step 18.
Measure the voltage between CMP sensor 3P connector terminal No. 1 and body ground.

Fig 2: Measuring Voltage Between CMP Sensor 3P Connector Terminal No. 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Go to step 10.

NO -Go to step 11.
Measure the voltage between CMP sensor 3P connector terminals No. 2 and No. 3.

Fig 3: Measuring Voltage Between CMP Sensor 3P Connector Terminals No. 2 And No. 3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there battery voltage?

YES -Go to step 16.

NO -Repair open in the wire between the CMP sensor and G101, then go to step 18.
Measure the voltage between ECM connector terminal A6 and body ground.

Fig 4: Measuring Voltage Between ECM Connector Terminal A6 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Repair open in the wire between the ECM (A6) and the CMP sensor, then go to step 18.

NO -Go to step 12.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect ECM connector A (31P).
Check for continuity between ECM connector terminal A6 and body ground.

Fig 5: Checking Continuity Between ECM Connector Terminal A6 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair short in the wire between the ECM (A6) and the CMP sensor, then go to step 18.

NO -Go to step 23.
Turn the ignition switch to LOCK (0).
Replace the CMP sensor (see CMP SENSOR REPLACEMENT ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the ECM with the HDS.
Do the ECM idle learn procedure (see ECM IDLE LEARN PROCEDURE ).
Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0365 indicated?

YES -Check for poor connections or loose terminals at the CMP sensor and the ECM, then go to step 1.

NO -Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
Reconnect all connectors.
Update the ECM if it does not have the latest software (see ECM UPDATE ), or substitute a known-good ECM (see SUBSTITUTING THE ECM ).
Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0365 indicated?

YES -Check for poor connections or loose terminals at the CMP sensor and the ECM. If the ECM was updated, substitute a known-good ECM (seeSUBSTITUTING THE ECM ), then recheck. If the ECM was substituted, go to step 1.

NO -If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM (see ECM REPLACEMENT ). If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.