DTC P0365: CMP Sensor B 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 CMP sensor B and the ECM/PCM.
Turn the ignition switch to LOCK (0).
Disconnect the CMP sensor B 3P connector.
Turn the ignition switch to ON (II).
Measure the voltage between CMP sensor B 3P connector terminal No. 3 and body ground.

Fig 1: Measuring Voltage Between CMP Sensor B 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 CMP sensor B and PGM-FI main relay 1 (Fl MAIN), then go to step 19.
Measure the voltage between CMP sensor B 3P connector terminal No. 1 and body ground.

Fig 2: Measuring Voltage Between CMP Sensor B 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 B 3P connector terminals No. 2 and No. 3.

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

Is there battery voltage?

YES -Go to step 17.

NO -Repair open in the wire between CMP sensor B and G101, then go to step 19.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect ECM/PCM connector A (31P).
Check for continuity between ECM/PCM connector terminal A6 and body ground.

Fig 4: Checking Continuity Between ECM/PCM 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/PCM (A6) and CMP sensor B, then go to step 19.

NO -Go to step 15.
Connect CMP sensor B 3P connector terminal No. 1 to body ground with a jumper wire.

Fig 5: Connecting CMP Sensor B 3P Connector Terminal No. 1 To Body Ground With Jumper Wire
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between ECM/PCM connector terminal A6 and body ground.

Fig 6: Checking Continuity Between ECM/PCM Connector Terminal A6 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 25.

NO - Repair open in the wire between the ECM/PCM (A6) and CMP sensor B, then go to step 19.
Turn the ignition switch to LOCK (0).
Replace CMP sensor B (see CMP SENSOR B REPLACEMENT ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Reset the ECM/PCM with the HDS.
Do the ECM/PCM idle learn procedure (see ECM/PCM 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 CMP sensor B and the ECM/PCM, then go to step 1.

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

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

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