DTC P1700 Throttle Position Signal Input. Geo Tracker - 2WD 1996

For 1990-2009 cars
Automatic Transmission Controls Schematics

### 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 volts at idle to about 5 volts at wide open throttle (WOT). This information is used by the TCM to determine shift points.

### DTC Detecting Condition

ON time of 65 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 When the DTC Sets

• | DTC P1700 is stored.

• | The OD/OFF indicator turns ON.

• | The malfunction indicator lamp (MIL) turns ON.

### 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.

### Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. This step checks for DTC P0122 or DTC P0123 stored in the ECM and to proceed to their respective diagnostic charts first.

2. This step checks for proper voltage values.

3. This step checks for poor ECM connector terminal contact.

4. This step determines whether the condition is intermittent and not caused by a defective ECM.

5. This step checks for a short to ground in PNK/BLU wire.

6. This step checks for an open in the PNK/BLU wire.

7. This step determines whether the condition is intermittent and not caused by a defective TCM.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the On-Board Diagnostic (OBD) System Check performed? | -- | Go to Step 2 | Go to On-Board Diagnostic System Check

2

1. Turn the ignition switch to ON.
2. Using a scan tool, read the DTCs.

Is DTC P0122 or DTC P0123 currently set in the ECM?

--

Go to the applicable DTC table.

Go to Step 3

3

1. Turn the ignition switch to LOCK.
2. Disconnect the ECM electrical connector C3.
3. Turn the ignition switch to ON.
4. Using a DVM, measure the voltage between the ground and ECM harness connector C3 and terminal 10.

Is the voltage within the specified range?

10-14 V

Go to Step 4

Go to Step 6

4 | Inspect the ECM connector C3 terminal 10 for poor contact. Is poor terminal contact or a poor connection evident? | -- | Go to Step 8 | Go to Step 5

5

1. Turn the ignition key to LOCK.
2. Reconnect the ECM connector.
3. Road test the vehicle and recheck.

Does the DTC reset?

--

Go to Step 10

Go to Step 11

6

1. Turn the ignition key to LOCK.
2. Disconnect the TCM.
3. Using a DVM, measure the resistance between ground and ECM harness connector C3 terminal 10.

Is the resistance less than the specified value?

2 ohms

Go to Step 9

Go to Step 7

7 | Using the DVM, measure the resistance between the ECM C3 terminal 10 and TCM harness connector terminal 6. Is the resistance less than the specified value? | 2 ohms | Go to Step 13 | Go to Step 12
8 | Repair terminals or connection integrity that exhibits poor contact and recheck. Is the action complete? | -- | Go to Step 15 | --
9 | Repair the short to ground in the PNK/BLU wire between the ECM and TCM. Is the action complete? | -- | Go to Step 15 |
10 | Replace the ECM. Refer to Engine Control Module (ECM) Replacement in Engine Controls. Is the action complete? | -- | Go to Step 15 |
11 | Refer to Diagnostic Aids in order to correct a possible intermittent malfunction. Is the procedure complete? | -- | Go to Step 15 | --
12 | Repair open or high resistance in PNK/BLU wire between the ECM and TCM. Is the action complete? | -- | Go to Step 15 | --

13

1. Reconnect the TCM.
2. Road test the vehicle and recheck.

Does the DTC reset?

--

Go to Step 14

--

14 | Replace the TCM. | -- | Go to Step 15 | --

15

1. Reconnect the connectors.
2. Perform the DTC Confirmation Procedure.

Does the scan tool display any DTCs?

--

Go to the applicable DTC table

System OK