DTC Troubleshooting: P0721 (9), P0722 (9)
  1. Measure the voltage between output shaft (countershaft) speed sensor connector terminal No. 1 and body ground.
Is there about 5 V?
YES -
Go to Step 19 .
NO -
Go to Step 15 .
  1. Turn the ignition switch to LOCK (0).
  1. Jump the SCS line with the HDS.
  1. Disconnect PCM connector C (49P).