For a complete wiring diagram Refer to Section 8W.When Monitored:Ignition on and No MAP Sensor DTCs set.Set Condition:TP Sensor signals do not correlate to the MAP Sensor signal. Two Trip Fault. ETC light will illuminate. P2135 should set with this code also.Possible CausesEXCESSIVE RESISTANCE IN THE (K22) TP SIGNAL 1 CIRCUITEXCESSIVE RESISTANCE IN THE (K122) TP SIGNAL 2 CIRCUITEXCESSIVE RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUITEXCESSIVE RESISTANCE IN THE (K922) TP RETURN CIRCUIT(K22) TP SIGNAL 1 CIRCUIT SHORTED TO THE (K122) TP SIGNAL 2 CIRCUITTHROTTLE POSITION SENSOR/THROTTLE BODYPCMAlways perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).1. ACTIVE DTCWhen this DTC is Active the engine speed, torque, and vehicle speed are limited to a Limp in mode.Diagnose any other TP Sensor DTC(s) before continuing.The throttle plate should be free from binding and carbon build up.Make sure the throttle plate is at the idle position.Inspect the engine for vacuum leaks.Ignition on, engine not running.With a scan tool, select View DTCs.Is the DTC active at this time?YesGo To 2NoGo To 92. EXCESSIVE RESISTANCE IN THE (K22) TP SIGNAL 1 CIRCUITTurn the ignition off.Disconnect the C2 PCM harness connector.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 along with the #8815-1 to perform the diagnosis.Using a voltmeter perform a voltage drop test. Backprobe the (K22) TP Signal 1 circuit at the Throttle Body harness connector and to probe the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so a positive polarity is displayed on the voltmeter.When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.Start the engine and allow it to reach normal operating temperature.Monitor the voltmeter.Is the voltage below 0.5 of a volt?YesGo To 3NoRepair the excessive resistance in the (K22) TP Signal 1 circuit.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)3. EXCESSIVE RESISTANCE IN THE (K122) TP SIGNAL 2 CIRCUITTurn the ignition off.Move the voltmeter leads to backprobe the (K122) TP Signal 2 circuit at the Throttle Body harness connector and to probe the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so a positive polarity is displayed on the voltmeter.When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.Start the engine and allow it to reach normal operating temperature.Monitor the voltmeter.Is the voltage below 0.5 of a volt?YesGo To 4NoRepair the excessive resistance in the (K122) TP Signal 2 circuit.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)4. EXCESSIVE RESISTANCE IN THE (F855) 5-VOLT SUPPLY CIRCUITTurn the ignition off.Move the voltmeter leads to backprobe the (F855) 5-volt Supply circuit at the Throttle Body harness connector and to probe the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so a positive polarity is displayed on the voltmeter. When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.Start the engine and allow it to reach normal operating temperature.Monitor the voltmeter.Is the voltage below 0.5 of a volt?YesGo To 5NoRepair the excessive resistance in the (F855) 5-volt Supply circuit.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)5. EXCESSIVE RESISTANCE IN THE (K922) TP RETURN CIRCUITTurn the ignition off.Move the voltmeter leads to backprobe the (K922) TP Return circuit at the Throttle Body harness connector and to probe the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so a positive polarity is displayed on the voltmeter.When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.Start the engine and allow it to reach normal operating temperature.Monitor the voltmeter.Is the voltage below 0.5 of a volt?YesGo To 6NoRepair the excessive resistance in the (K922) TP Return circuit.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)6. (K22) TP SIGNAL 1 CIRCUIT SHORTED TO THE (K122) TP SIGNAL 2 CIRCUIT

Measure the resistance between the (K22) TP Signal 1 circuit and the (K122) TP Signal 2 circuit in the Throttle Body harness connector.Is the resistance below 5.0 ohms?YesRepair 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) NoGo To 77. THROTTLE POSITION SENSOR

Turn the ignition off.Connect the C2 PCM harness connector.Ignition on, engine not running.With a scan tool, monitor the TP Sensor No.1 and No.2 voltage.Connect a jumper wire between the (K922) TP Return circuit and the (K22) TP Signal 1 circuit.TP Sensor No.1 voltage should change from approximately 4.5 volts to less than 0.5 of a volt.For TP Sensor No.2, connect a jumper wire between (F855) 5-volt Supply circuit and the (K122) TP Signal 2 circuit.TP Sensor No.2 voltage should change from approximately 0 volts to 5.0 volts?Is the voltage reading within the listed specification when the jumper wire is installed?YesReplace the Throttle Body Assembly. Disconnect the Battery when replacing 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) NoGo To 8Remove the jumper wire before continuing.8. PCMBefore continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.Were there any problems found?YesRepair as necessary.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) NoReplace and program the Powertrain Control Module per Service Information.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 9. THROTTLE FOLLOWER TESTIgnition on, engine not running.With a scan tool, perform the Throttle Follower Test and monitor the TP Sensor No.1 or No.2 voltage.Slowly press the throttle pedal down.The voltage for TP Sensor No.1 should start at approximately 0.3 of a volt and increase to above 4.7 volts.The voltage for TP Sensor No.2 should start at approximately 4.7 volts and decrease to approximately 0.3 of a volt.Is the voltage within the range of the listed specification for the appropriate Sensor?YesRefer to the INTERMITTENT CONDITION Diagnostic Procedure.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) NoDisconnect 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)