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5R110WCodes P0720, P0721, P0722, P0715, P0717, P0718, P0791, P0793, P0794Codes P0720 and P0722 indicates an insufficient , noisy or no input from the OSS. Codes P0715 and P0717 indicate an insufficient, noisy or no input from the TSS. Codes P0791 and P0793 indicate an insufficient, noisy or no input from the ISS.

OSS

TSS/ISS

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5R110WCodes P0720 and P0722 (continued)

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5R110WCodes P0720 and P0722 (continued)

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5R110WCodes P0720 and P0722 (continued)There are two ways of checking the sensors with the scan tool monitor the PID readings or graph the signals. When checking the sensor signals with the scan tool you might miss glitches in the signal.

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5R110WCodes P0720 and P0722 (continued)Using the graphing meter on the scan tool in much more efficient in capturing glitches.

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5R110WCodes P0720 and P0722 (continued)With the sensor disconnected connect the OSS with your meter. Then jump a 12 V fused link the hall effect sensor and monitor the signal as shown below.

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5R110WCodes P0720 and P0722 (continued)You can also check the signal with the sensor connected. Back probe pin 2 at the harness connector.

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5R110WCodes P0720 and P0722 (continued)You can check the signal at the PCM connector to verify the signal is strong at the PCM and at the sensor.

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5R110WCodes P0720 and P0722 (continued)Using a graphing meter on any speed sensor is always the best. Here we’re using it on the TSS/ISS sensor. Jump a 12 V fused link the hall effect sensor and monitor the signal as shown below.

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5R110WCodes P0720 and P0722 (continued)You can also check the signal with the sensor connected. Back probe pins 3 & 4 at the harness connector.

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5R110WCodes P0720 and P0722 (continued)You can check the signal at the PCM connector to verify the signal is strong at the PCM and at the sensor.

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5R110WCodes P0720 and P0722 (continued)The scan tool and graphing meter are good tools but they can’t beat an oscilloscope. Oscilloscopes can find almost all glitches, noise or insufficient voltages.

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5R110WCodes P0720 and P0722 (continued)You can also check the signal with the sensor connected. Back probe pins 3 & 4 at the harness connector.

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5R110WCodes P0720 and P0722 (continued)You can check the signal at the PCM connector to verify the signal is strong at the PCM and at the sensor.