P2135-THROTTLE POSITION SENSOR 1/2 CORRELATION

For a complete wiring diagram Refer to Section 8W.

When Monitored:
With the ignition on and no other DTCs present for TP Sensor No.1 or No.2.
Set Condition:
PCM recognizes TP Sensors No.1 and No.2 are not coherent. One trip fault and the code will set within 5 seconds. ETC light is illuminated.

Possible Causes

(K22) TP SIGNAL 1 SHORTED TO BATTERY VOLTAGE

(K122) TP SIGNAL 2 CIRCUIT SHORTED TO BATTERY VOLTAGE

RESISTANCE IN THE (K22) TP SIGNAL 1 CIRCUIT

RESISTANCE IN THE (K122) TP SIGNAL 2 CIRCUIT

(K22) TP SIGNAL 1 CIRCUIT SHORTED TO GROUND

(K122) TP SIGNAL 2 CIRCUIT SHORTED TO GROUND

RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUIT

(F855) 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND

RESISTANCE IN THE (K922) SENSOR GROUND CIRCUIT

(K22) TP SIGNAL 1 CIRCUIT SHORTED TO THE (K122) TP SIGNAL 2 CIRCUIT

THROTTLE POSITION SENSOR

PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).

Diagnostic Test

1.ACTIVE DTC

NOTE: The throttle plate and linkage should be free from binding and carbon build up.

NOTE: Make sure the throttle plate is at the idle position.

NOTE: Inspect the engine for vacuum leaks.

Is the DTC Active at this time?

Yes

Go To 2

Go To 14

2.(K22) TP SIGNAL 1 CIRCUIT SHORTED TO BATTERY VOLTAGE

Is the voltage above 0 volts?

Yes

Repair the short to battery voltage in the (K22) TP Signal 1 circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 3

3.(K122) TP SIGNAL 2 CIRCUIT SHORTED TO BATTERY VOLTAGE

Is the voltage above 0 volts?

Yes

Repair the short to battery voltage in the (K122) TP Signal 2 circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 4

4.THROTTLE POSITION SENSOR

Is the voltage reading within the listed specification with the jumper wire installed?

Yes

Replace the Throttle Body Assembly.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 5
NOTE: Remove the jumper wire before continuing.

5.EXCESSIVE RESISTANCE IN THE (K22) TP SIGNAL 1 CIRCUIT

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 6

Repair the excessive resistance in the (K22) TP Signal 1 circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

6.EXCESSIVE RESISTANCE IN THE (K122) TP SIGNAL 2 CIRCUIT

Is the resistance below 5.0 ohms for each circuit?

Yes

Go To 7

Repair the excessive resistance in the (K122) TP Signal 2 circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

7.(K22) TP SIGNAL 1 CIRCUIT SHORTED TO GROUND

Is the resistance below 100 ohms for each circuit?

Yes

Repair the short to ground in the (K22) TP Signal 1 circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 8

8.(K122) TP SIGNAL 2 CIRCUIT SHORTED TO GROUND

Is the resistance below 100 ohms for each circuit?

Yes

Repair the short to ground in the (K122) TP Signal 2 circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 9

9.EXCESSIVE RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUIT

Is the resistance below 5.0 ohms?

Yes

Go To 10

Repair the excessive resistance in the (F855) 5-volt Supply circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

10.(F855) 5-VOLT SUPPLY SHORTED TO GROUND

Is the resistance below 100 ohms?

Yes

Repair the short to ground in the (F855) 5-volt Supply circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 11

11.EXCESSIVE RESISTANCE IN THE (K922) SENSOR RETURN CIRCUIT

Is the resistance below 5.0 ohms?

Yes

Go To 12

Repair the excessive resistance in the (K922) Sensor Return circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

12.(K22) TP SIGNAL 1 SHORTED TO (K122) TP SIGNAL 2

Is the resistance below 5.0 ohms?

Yes

Repair the short between the (K122) TP Signal 2 circuit and the (K22) TP Signal 1 circuit.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Go To 13

13.PCM

NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

Were there any problems found?

Yes

Repair as necessary.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Replace and program the Powertrain Control Module per Service Information.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

14.THROTTLE FOLLOWER TEST

Is the voltage within the range of the listed specification for the appropriate Sensor?

Yes

Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Disconnect the Battery when replacing the Throttle Body Assembly. Replace the Throttle Body Assembly. After installation is complete, use a scan tool and select the ETC RELEARN function.
Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)