DTC P0340: CMP Sensor A No Signal; DTC P0341: CMP Sensor A Intermittent Interruption; DTC P0365: CMP Sensor B No Signal; DTC P0366: CMP Sensor B Intermittent Interruption

Reset the PCM (see HOW TO RESET THE PCM ).
Start the engine.
Is DTC P0340, P0341, P0365, or P0366 indicated?
1. YES -Go to step 3.
2. NO -Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the CMP sensor A/B and at the PCM.
Turn the ignition switch OFF.
Disconnect the CMP sensor A/B 4P connector.
Measure resistance between the terminals of the indicated sensor (see table).

Fig 1: Measuring Resistance Between CMP Sensor Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: CMP Sensor Test Table
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 1,850-2,450 Ω?
1. YES -Go to step 6.
2. NO -Replace the CMP sensor A/B (see CMP Sensor Replacement ).
Check for continuity to body ground on both terminals of the indicated sensor individually.

Fig 3: Checking For Continuity To Body Ground On Both Terminals Of The CMP Sensor
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES -Replace the CMP sensor A/B (see CMP Sensor Replacement ).
2. NO -Go to step 7.
Reconnect the CMP sensor A/B 4P connector.
Disconnect PCM connector C (31P).
Measure resistance between the terminals of the indicated sensor on the PCM connector (see table).

Fig 4: Measuring Resistance Between PCM Connector C (31P) Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 5: PCM Connector C (31P) Terminals Test table
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 1,850-2,450 Ω ?
1. YES -Go to step 10.
2. NO -Repair open in the indicated sensor wires (see table).
Check for continuity between body ground and PCM connector terminals C20 and/or C29 individually.

Fig 6: Checking For Continuity Between Body Ground & PCM Connector Terminals C20 &/Or C29
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?
1. YES -Repair short in the indicated sensor wires.
2. NO -Substitute a known-good PCM and recheck (see HOW TO SUBSTITUTE THE PCM FOR TESTING ). If the symptom/indication goes away, replace the original PCM.