P1700

DTC P1700 Throttle Position Signal Input:

Throttle Position:

CIRCUIT DESCRIPTION

The Throttle Position (TP) Sensor provides a voltage signal to the Engine Control Module (ECM) that increases as the throttle blade angle is increased. The ECM converts this voltage signal into a duty signal which is sent to the Transmission Control Module (TCM). This duty signal is a voltage that will vary from approximately 11.0 volts at idle to about 5.0 volts at Wide Open Throttle (WOT). This information is used by the TCM to determine shift points.


DTC DETECTING CONDITIONS

"ON" time of 64 Hz pulse signal from ECM to TCM is shorter than 0.4 ms or longer than 12 ms. Two driving cycle detection logic.


ACTION TAKEN

A DTC P1700 is stored, TCM enters fail-safe mode, and both the "OD/OFF" and "SERVICE ENGINE SOON" indicators are turned "ON."

DTC CHART TEST DESCRIPTION

Numbers below refer to circled numbers on the diagnostic chart.

1. Checks for DTC P0122 or DTC PO123 stored in the ECM and to proceed to their respective diagnostic charts first.

2. Checks for proper voltage values.

3. Checks for poor ECM connector terminal contact.

4. Determines whether the condition is intermittent and not caused by a defective ECM.

5. Checks for a short to ground in PNK/BLU wire.

6. Checks for an open in PNK/BLU wire.

7. Determines whether the condition is intermittent and not caused by a defective TCM.


DIAGNOSTIC AIDS

An intermittent condition may be caused by a poor connection, rubbed through wire insulation or a wire broken inside the insulation. Inspect the ECM and TCM harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals and for poor terminal-to-wire connections.