Pinpoint Test C : Tr Sensor: Notes
Refer to Transmission Controls - TorqShift 6 for schematic and connector information.
Normal Operation
The TR sensor assembly is an internally mounted sensor that includes the rooster comb and bracket, located next to the main control valve body. The components of the TR sensor are factory adjusted and the TR sensor must be installed as a calibrated assembly. The TR sensor contains electronic circuitry that provides the TCM a fixed frequency duty cycle for each of the various positions of the manual lever (PARK, REVERSE, NEUTRAL, D, M, 3, 2 and 1) to the TCM. The TCM uses the TR sensor signal for line pressure control, shift scheduling and TCC operation. The TCM sends network messages for engine start enable and reverse lamps.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| TCM P0705:00 | Transmission Range Sensor "A" Circuit (PRNDL Input): No Sub Type Information | This DTC sets if the TCM detects an out of range condition due to a short to ground, a short to power or an open condition in the TR sensor circuitry. |
| TCM P0706:00 | Transmission Range Sensor "A" Circuit Range/Performance: No Sub Type Information | This DTC sets if the TCM detects an out of range condition due to a short to ground, a short to power or an open condition in the TR sensor circuitry. |
| TCM P0707:00 | Transmission Range Sensor "A" Circuit Low: No Sub Type Information | This DTC sets if the TCM detects an out of range condition due to a short to ground, a short to power or an open condition in the TR sensor circuitry. |
| TCM P0708:00 | Transmission Range Sensor "A" Circuit High: No Sub Type Information | This DTC sets if the TCM detects an out of range condition due to a short to ground, a short to power or an open condition in the TR sensor circuitry. |
| TCM P0709:00 | Transmission Range Sensor "A" Circuit Intermittent: No Sub Type Information | This DTC sets if the TCM detects an out of range condition due to a short to ground, a short to power or an open condition in the TR sensor circuitry. |
| TCM P1702:00 | Transmission Range Sensor Circuit Intermittent: No Sub Type Information | This DTC sets relationally if the DTCs P0705, P0706, P0708 or P0709 are set, RESOLVE these DTCs first. |
| TCM P1705:00 | Transmission Range Circuit Not Indicating Park/Neutral During Self Test: No Sub Type Information | This DTC sets if the self-test is run in R or a forward gear, the TR sensor is misaligned or the TR sensor is inoperative. |
| TCM P1921:00 | Transmission Range Signal: No Sub Type Information | This DTC sets relationally if the DTCs P0705, P0706, P0708 or P0709 are set, RESOLVE these DTCs first. |
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- Transmission internal wiring harness
- TR sensor
- TCM