Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Test Notes

Test Schematic:






You should enter this pinpoint test only when directed here.

This pinpoint test is intended to diagnose the following:
- Transmission Fluid Temperature (TFT) sensor
- Harness circuits: TFT SIG and Signal Return (SIG RTN)
- Powertrain Control Module (PCM)





TFT Sensor Graph

NOTE: Voltage values are calculated for Reference Voltage (VREF) = 5.0 volts. The values may vary 15 percent due to sensor and VREF variations. Transmission fluid temperature must be a minimum of 10°C (50°F) before taking TFT sensor resistance measurements.

DTC DESCRIPTION
0712 = TFT sensor circuit low input.
0713 = TFT sensor circuit high input.
1711 = TFT sensor out of self test range.