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P0707






P0707-TRANSMISSION RANGE SENSOR CIRCUIT LOW





For a complete wiring diagram, refer to the wiring information .

Theory of Operation

The Transmission Range Sensor (TRS) has a contact point for each shift lever position. The Transmission Control Module (TCM) monitors the signal from the TRS which specifies the shift lever position. The TCM also broadcast the shift lever position over the CAN BUS to other modules.

- When Monitored:
Ignition on with system voltage between 9.0 and 16.0 volts.

Vehicle speed above 10 Km/h (6 mph).

No other Transmission Range Sensor (TRS) DTCs present.

- Set Condition:
If a continuous input signal loss is read by the TCM from the TRS for the period of 5 seconds. It takes two consecutive one trips of problem identification to light the MIL.





Always perform the CVT Pre-Diagnostic Troubleshooting procedure before proceeding. Testing and Inspection.

1. CHECK TO SEE IF THE DTC IS ACTIVE
1. With the scan tool, read Transmission DTCs.

Is the status Active or is the Starts Since Set counter 2 or less for this DTC?

Yes

- Go To 2

No

- Go To 9

2. CHECK THE TRS HARNESS CONNECTOR
1. Turn the ignition off to the lock position.
2. Check if the TRS harness connector for terminal push out, corrosion or if it is properly plugged in.

NOTE: If the Transmission Range Sensor is unplugged the vehicle will not start.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

No

- Go To 3

3. CHECK THE TRS INSTALLATION AND ADJUSTMENT
1. Turn the ignition off to the lock position.
2. Check if the TRS is properly installed and adjusted.

Was the TRS properly installed and adjusted?

Yes

- Go To 4

No

- Properly install or adjust the TRS.
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

4. CHECK THE TRS READINGS ON THE SCAN TOOL





1. Ignition on, engine not running.
2. With the scan tool, read the TRS states while moving the shift lever to all positions note any circuits that do not change.

NOTE: Vehicles equipped with the AutoStick feature will not have a low range shift position.

Pick which answer best describes your findings:

One TRS Sense circuit failed to change on the scan tool

- Go To 6

None of the TRS Sense circuits changed at all

- Go To 5

All TRS Sense circuits changed properly on the scan tool

- Check the Sift Lever Cable for proper adjustment and binding. If no problems are found, using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Bulletins for possible causes that may apply. If again no problems are found, replace the TCM
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

5. CHECK THE (T16) TRANSMISSION CONTROL OUTPUT CIRCUIT FOR AN OPEN




1. Turn the ignition off to the lock position.
2. Disconnect the TRS harness connector.
3. Ignition on, engine not running.
4. Using the scan tool under TIPM, actuate the transmission relay.
5. Using a 12-volt test light connected to ground, check the (T16) Transmission Control Output circuit in the TRS harness connector.

NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly?

Yes

- Go To 8

No

- Repair the (T16) Transmission Control Output circuit for an open.
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

6. CHECK THE TRS SENSE CIRCUIT FOR AN OPEN




1. Turn the ignition off to the lock position.
2. Disconnect the TRS harness connector.
3. Check the resistance of the previously identified TRS Sense circuit between the TRS harness connector and the TCM harness connector.

Is the resistance above 5.0 Ohms?

Yes

- Repair the identified TRS Sense circuit for an open
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

No

- Go To 7

7. CHECK THE TRS SENSE CIRCUIT FOR A SHORT TO GROUND




1. Turn the ignition off to the lock position.
2. Disconnect the TRS harness connector.
3. Check the resistance between ground and the identified TRS Sense circuit in the previous test procedure.

Is the resistance below 5.0 Ohms?

Yes

- Repair the identified TRS Sense circuit for a short to ground
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

No

- Replace the Transmission Range Sensor (TRS).
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

8. CHECK THE TRANSMISSION RANGE SENSOR









1. Stop the scan tool transmission actuation and turn the ignition off to the lock position.
2. Reconnect the TRS harness connector.
3. Disconnect the TCM C1 and C2 harness connectors.
4. Ignition on, engine not running.
5. Using the scan tool under TIPM, actuate the transmission relay.
6. Using a 12-volt test light connected to ground, check each TRS Sense circuit (T41, T42, T4, T3, and T1) in the TCM C1 and C2 harness connectors while moving the shift lever to each desired position.

NOTE: Use the above chart to identify which sense circuit should be closed in each shift lever position.

Does the test light illuminate brightly on all the TRS Sense circuits?

Yes

- Using the schematics as a guide, check the Transmission Control Module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Bulletins for possible causes that may apply. If no problems are found, replace the TCM.
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

No

- Replace the Transmission Range Sensor.
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

9. CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle the wires while checking for shorted and open circuits.

Were there any problems found?

Yes

- Repair as necessary.
- Perform the CVT TRANSMISSION VERIFICATION TEST. CVT Transmission Verification Test.

No

- Test Complete.

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