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Home >> Suzuki >> 2012 >> SX4 LE, Automatic CVT Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Continuously Variable Transaxle (CVT) >> Diagnostic Information and Procedures >> DTC P0722: Output Speed Sensor Circuit No Signal >> DTC Troubleshooting
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DTC Troubleshooting

DTC P0722 TROUBLESHOOTING CHART

Step Action YES NO
1  Was "CVT System Check" performed?  Go to Step 2. Go to CVT SYSTEM CHECK .
2  Secondary pulley speed sensor power supply circuit check 
  1. Turn off ignition switch and disconnect connector from secondary pulley speed sensor.
  2. Check for proper terminal connection to secondary pulley speed sensor connector.
  3. If connections are OK, turn ignition switch to ON position.
  4. Check that secondary sensor power supply circuit (A1) is battery voltage.

Are they in good condition? 		 Go to Step 3. Repair or replace defective wire harness.
3  Secondary pulley speed sensor signal circuit and ground circuit check 
  1. Turn off ignition switch and disconnect connectors from TCM.
  2. Check for proper terminal connection to TCM connectors.
  3. If connections are OK, check that secondary pulley speed sensor signal circuit (A3) and sensor ground circuit (B1) are as follows.
    • Wiring harness resistance of secondary pulley speed sensor signal circuit and sensor ground circuit is less than 1 Ω.
    • Insulation resistance between secondary pulley speed sensor signal circuit and vehicle body ground is infinity.
    • Insulation resistance of wire harness is infinity between secondary pulley speed sensor signal circuit terminal and each terminal at secondary pulley speed sensor connector.
    • Insulation resistance of wire harness is infinity between secondary pulley speed sensor ground circuit terminal and each terminal at secondary pulley speed sensor connector.
    • Circuit voltage of secondary pulley speed sensor signal circuit and sensor ground circuit is 0 - 1 V with ignition switch in ON position.

Are they in good condition? 		 Go to Step 4. Repair or replace defective wire harness.
4  Secondary pulley speed sensor check 
  1. Check secondary pulley speed sensor. See Primary Pulley Speed Sensor and Secondary Pulley Speed Sensor Inspection 

Is it in good condition? 		 Substitute a known-good TCM and recheck. Replace secondary pulley speed sensor. See Secondary Pulley Speed Sensor Removal and Installation 
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