DTC P0721:
Problem in Output Shaft (Countershaft) Speed Sensor Circuit
DTC P0722:
Problem in Output Shaft (Countershaft) Speed Sensor Circuit (No Signal Input)
NOTE:
R20A3 Engine Model
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Turn the ignition switch to ON (II).
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Clear the DTC with the HDS.
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Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely. Or raise the vehicle on a lift.
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Start the engine, disable the VSA by pressing the VSA OFF switch, run the vehicle with the shift lever in D, with the engine speed above 2,000 rpm (min
?1
) for at least 10 seconds. Slow down and stop the wheels.
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Monitor the OBD STATUS for P0721 or P0722 in the DTCs MENU with the HDS.
Does the HDS indicate FAILED?
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YES
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NO
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If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals between the output shaft (countershaft) speed sensor and the PCM. If the HDS indicates NOT COMPLETED, go to
Step 5
.
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Turn the ignition switch to LOCK (0).
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Jump the SCS line with the HDS.
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Disconnect PCM connector C (44P).
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Check for continuity between PCM connector terminal C40 and body ground, and between terminal C44 and body ground.
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Connect PCM connector C (44P).
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Disconnect the output shaft (countershaft) speed sensor connector.
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Turn the ignition switch to ON (II).
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