Dtcs p0403 to p050d Chrysler Town & Country V

Scheme 216

Additional Wiring

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

Monitor Conditions

1. When Monitored: With the engine run time above a calibrated value, battery voltage greater than 10.4 volts, ECT within a specific range, and the EGR Valve Assembly control active.

Set Conditions

1. Set Condition: This PCM compares the circuit feedback to a calibrated closed range when the circuit is de-energized or to a calibrated open range when the circuit is energized. If the value is determined to be out of the calibrated range in either the de-energized or energized state for more than a calibrated amount of time, this DTC will set.

Possible Causes

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 217

Scheme 218

Scheme 219

Scheme 220

Scheme 221

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, Clear DTCs in the Powertrain Control Module (PCM). With the scan tool, actuate the EGR Valve Solenoid Duty Cycle. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. (K35) EGR CONTROL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the EGR Valve Assembly connector. Disconnect the Powertrain Control Module (PCM) connector. Turn the ignition on. Measure the voltage of the (K35) EGR Control circuit in the EGR Valve Assembly harness connector. Is there any voltage present? Yes Repair the (K35) EGR Control circuit for a short to voltage. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. (K35) EGR CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the (K35) EGR Control circuit in the EGR Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go to 4 . No Repair the (K35) EGR Control circuit for a short to ground. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
4. (K35) EGR CONTROL CIRCUIT OPEN OR HIGH RESISTANCE 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. Measure the resistance of the (K35) EGR Control circuit between the EGR Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to 5 . No Repair the (K35) EGR Control circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
5. (Z901/Z903) GROUND CIRCUIT OPEN OR HIGH RESISTANCE Using a 12 volt test light connected to 12 volts, check the (Z901/Z903) Ground circuit in the EGR Valve Assembly harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go to 6 . No Repair the (Z901/Z903) Ground circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. EGR VALVE ASSEMBLY Connect the Powertrain Control Module (PCM) connector. Turn the ignition on. With the scan tool, actuate the EGR Valve Solenoid Duty Cycle. Using a 12 volt test light connected to ground, check the (K35) EGR Control circuit in the EGR Valve Assembly harness connector. NOTE: If the DTC is active, the actuation test may not be allowed by the PCM. If may be necessary to clear the DTCs before starting the actuation. NOTE: The voltage supplied to the solenoid circuit during the actuation may be less than battery voltage. The test light should be illuminated, but may not be as bright as a direct connection to the battery. Is the test light illuminated during the actuation? Yes Replace the EGR Valve Assembly in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 7 .
7. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EGR Valve Assembly and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: The PCM performs two diagnostic procedures to test the rationality of the EGR sensor signal: a position rationality test and a zero reference test. The position rationality test is performed continuously when the EGR control circuit is active. The zero reference test is performed when the valve is closed, with the throttle closed and engine RPM below a calibrated threshold, when the PCM is attempting to learn the position of the EGR valve during the closed valve state.

1. Set Condition: The PCM monitors the EGR position rationality by subtracting the actual position of the EGR valve from the desired position. If the value exceeds a calibrated value for a calibrated time, the test fails. If the PCM detects that the EGR position zero reference voltage is not within a valid range, the test fails. After two failed trips, a DTC is set and the MIL is illuminated.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 222

Scheme 223

Scheme 224

1. DTC IS ACTIVE NOTE: Diagnose and repair any EGR signal circuit high or low DTCs before continuing with this procedure. Turn the ignition on. With the scan tool, select View DTCs. Record DTC and Freeze Frame information. Start the engine and allow it to reach operating temperature. WARNING: 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. WARNING: The normal operating temperature of the EGR system is very high. Never work around or attempt to service any part of the EGR system until it has cooled. NOTE: Attempt to operate the vehicle under conditions similar to which the DTC was set. NOTE: It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. (K856) 5 VOLT SUPPLY CIRCUIT HIGH RESISTANCE Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K856) 5 Volt Supply circuit at the EGR Valve Assembly harness connector and probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 3 . No Repair the (K856) 5 Volt Supply circuit for high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
3. (K34) EGR SIGNAL CIRCUIT HIGH RESISTANCE Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K34) EGR Signal circuit at the EGR Valve Assembly harness connector and probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 4 . No Repair the (K34) EGR Signal circuit for high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
4. (K900) SENSOR GROUND CIRCUIT HIGH RESISTANCE Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K900) Sensor Ground circuit at the EGR Valve Assembly harness connector and probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 5 . No Repair the (K900) Sensor Ground circuit for high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
5. (Z901/Z903) GROUND CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off. Disconnect the EGR Valve Assembly harness connector. Using a 12 volt test light connected to the 12 volts, check the (Z901/Z903) Ground circuit in the EGR Valve Assembly harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go to 6 . No Repair the (Z901/Z903) Ground circuit for an open circuit of high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. (K35) EGR CONTROL CIRCUIT HIGH RESISTANCE Turn the ignition off. Connect the EGR Valve Assembly connector. CAUTION: 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K35) EGR Control circuit at the EGR Valve Assembly harness connector and probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. Start the engine and allow it to reach operating temperature. WARNING: 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. With the scan tool, perform the EGR System Test. Select OPEN to open the EGR valve. Monitor the circuit voltage on the voltmeter. Is the voltage below 0.5 volts when the valve was opened during the system test? Yes Go to 7 . No Repair the (K35) EGR Control circuit for excessive resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
7. EGR VALVE ASSEMBLY Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EGR Valve Assembly and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair or replace the EGR system components as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the EGR Valve Assembly. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the ignition on and battery voltage greater than 10.4 volts.

1. Set Condition: The PCM detects that the EGR Valve Assembly input voltage is below the minimum acceptable value.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 225

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Scheme 227

Scheme 228

Scheme 229

Scheme 230

Scheme 231

1. DTC IS ACTIVE Start the engine and allow it to reach normal operating temperature. WARNING: 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. NOTE: Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. (K856) 5 VOLT SUPPLY CIRCUIT VOLTAGE Turn the ignition off. Disconnect the EGR Valve Assembly connector. Turn the ignition on. Measure the voltage of the (K856) 5 Volt Supply circuit in the EGR Valve Assembly harness connector. Is the voltage above 4.5 volts? Yes Go to 6 . No Go to 3 .
3. (K856) 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND Turn the ignition on. Disconnect the Powertrain Control Module (PCM) connector. Measure the resistance between ground and the (K856) 5 Volt Supply circuit in the EGR Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go to 4 . No Repair the (K856) 5 Volt Supply circuit for a short to ground. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
4. (K856) 5 VOLT SUPPLY CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT Measure the resistance between the (K856) 5 Volt Supply circuit and the (K900) Sensor Ground circuit in the EGR Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go to 5 . No Repair the (K856) 5 Volt Supply circuit for a short to the (K900) Sensor Ground circuit. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
5. (K856) 5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE 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. Measure the resistance of the (K856) 5 Volt Supply circuit between the EGR Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to 10 . No Repair the (K856) 5 Volt Supply circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. (K34) EGR SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the Powertrain Control Module (PCM) connector. Measure the resistance between ground and the (K34) EGR Signal circuit in the EGR Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go to 7 . No Repair the (K34) EGR Signal circuit for a short to ground. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
7. (K34) EGR SIGNAL CIRCUIT SHORTED TO (K900) SENSOR GROUND CIRCUIT Measure the resistance between the (K34) EGR Signal circuit and the (K900) Sensor Ground circuit in the EGR Valve Assembly harness connector. Is the resistance above 100 ohms? Yes Go to 8 . No Repair the (K34) EGR Signal circuit for a short to the (K900) Sensor Ground circuit. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
8. (K34) EGR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE 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. Measure the resistance of the (K34) EGR Signal circuit between the EGR Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to 9 . No Repair the (K34) EGR Signal circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
9. EGR VALVE ASSEMBLY Turn the ignition off. Connect the Powertrain Control Module (PCM) connector. Turn the ignition on. With the scan tool, read the EGR Valve Assembly signal voltage. NOTE: The sensor voltage should be approximately 5.0 volts (plus or minus.1 volt) with the connector disconnected. Does the scan tool display the voltage as described above? Yes Replace the EGR Valve Assembly in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 10 .
10. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EGR Valve Assembly and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the ignition on and battery voltage greater than 10.4 volts.

1. Set Condition: The PCM detects that the EGR Valve Assembly input voltage is above the maximum acceptable value.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 232

Scheme 233

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Scheme 235

1. DTC IS ACTIVE Start the engine and allow it to reach normal operating temperature. WARNING: 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. NOTE: Diagnose and repair any system voltage or sensor supply voltage DTCs before continuing with this test. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. (K856) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the EGR Valve Assembly connector. Disconnect the Powertrain Control Module (PCM) connector. Turn the ignition on. Measure the voltage of the (K856) 5 Volt Supply circuit in the EGR Valve Assembly harness connector. Is there any voltage present? Yes Repair the (K856) 5 Volt Supply circuit for a short to voltage. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. (K34) EGR SIGNAL CIRCUIT SHORTED TO VOLTAGE Measure the voltage of the (K34) EGR Signal circuit in the EGR Valve Assembly harness connector. Is there any voltage present? Yes Repair the (K34) EGR Signal circuit for a short to voltage. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. (K34) EGR SIGNAL CIRCUIT SHORTED TO THE (K856) 5 VOLT SUPPLY CIRCUIT Measure the resistance between the (K34) EGR Signal circuit and the (K856) 5 Volt Supply in the EGR Valve Assembly harness connector. Is the resistance below 100 ohms? Yes Repair the (K34) EGR Signal circuit for a short to the (K856) 5 Volt Supply circuit. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 5 .
5. (K34) EGR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off. 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. Measure the resistance of the (K34) EGR Signal between the EGR Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to 6 . No Repair the (K34) EGR Signal for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. (K900) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE 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. Measure the resistance of the (K900) Sensor Ground circuit between the EGR Valve Assembly harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to 7 . No Repair the (K900) Sensor Ground circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
7. EGR VALVE ASSEMBLY Turn the ignition off. Connect the Powertrain Control Module (PCM) connector. Connect a jumper wire between the (K900) Sensor Ground circuit and the (K34) EGR Signal circuit in the EGR Valve Assembly harness connector. Turn the ignition on. With the scan tool, read the EGR Valve Assembly signal voltage. NOTE: The sensor voltage should be approximately 0.0 volts (plus or minus.1 volt) with the jumper wire in place. Does the scan tool display the voltage as described above? Yes Replace the EGR Valve Assembly in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 8 .
8. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EGR Valve Assembly and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

The catalyst monitor uses the signals from both the upstream and downstream O2 sensors to detect aging of the catalyst. As a catalyst ages, it loses some of its oxygen storing capacity. As a result, part of the untreated exhaust gases can break through the catalyst and causes the downstream O2 sensor to deviate from its neutral (Stoichiometric) position. By observing the downstream O2 signal, the degradation level of catalyst can be detected. In general, the higher the downstream O2 sensor state of change value, the more exhaust gas breakthrough and the lower the oxygen storage capacity of the catalytic converter.

1. When Monitored: ECT above 70° C (158° F), engine RPM between 1400 and 2300, vehicle speed between 64 and 96 kph (40 and 60 mph), and engine run time greater than 3 minutes.

1. Set Condition: If the final state of change index is within the calibrated fail threshold. Two trip fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Diagnostic Test

1. ACTIVE DTC NOTE: Diagnose and repair any O2 Sensor DTCs before continuing with this test. NOTE: A new downstream O2 Sensor along with an aging upstream O2 Sensor may cause the DTC to set. Review the vehicle repair history before continuing. NOTE: It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set. NOTE: Attempt to operate the vehicle under conditions similar to which the DTC was set. Refer to Freeze Frame information. Start the engine and allow it to reach operating temperature. WARNING: 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. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. CATALYTIC CONVERTER Thoroughly inspect the catalytic converter for any of the following conditions: - Damage, dents, or holes - Severe discoloration caused by overheating - Internal damage Were any problems found? Yes Replace the Catalytic Converter. Repair the condition that may have caused the failure. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. CHECKING THE EXHAUST SYSTEM FOR LEAKS Perform the diagnostic procedure for «*CHECKING THE EXHAUST SYSTEM FOR LEAKS»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) . Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. CHECKING THE OXYGEN SENSOR OPERATION Perform the diagnostic procedure for «*CHECKING THE OXYGEN SENSOR OPERATION»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) . Were any problems found? Yes Repair as necessary in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 5 .
5. ENGINE MECHANICAL CONDITION NOTE: Check for signs of contamination that may have damaged the O2 Sensor(s) and Catalytic Converter, such as: contaminated fuel, unapproved silicone, evidence of oil, coolant or anti-seize compound. Repair as necessary. Check the exhaust for excessive smoke caused by an internal engine problem. Were any problems found? Yes Repair the engine mechanical condition in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 6 .
6. UPSTREAM O2 SENSOR A new downstream O2 Sensor along with an aging upstream O2 Sensor may cause this DTC to set. Review the vehicle repair history. Has the downstream O2 Sensor been replaced without replacing the upstream O2 Sensor? Yes Replace the upstream O2 Sensor as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 7 .
7. CATALYTIC CONVERTER If there are no possible causes remaining, view repair. Repair Replace the Catalytic Converter. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

The catalyst monitor uses the signals from both the upstream and downstream O2 sensors to detect aging of the catalyst. As a catalyst ages, it loses some of its oxygen storing capacity. As a result, part of the untreated exhaust gases can break through the catalyst and causes the downstream O2 sensor to deviate from its neutral (Stoichiometric) position. By observing the downstream O2 signal, the degradation level of catalyst can be detected. In general, the higher the downstream O2 sensor state of change value, the more exhaust gas breakthrough and the lower the oxygen storage capacity of the catalytic converter.

1. When Monitored: ECT above 70° C (158° F), engine RPM between 1400 and 2300, vehicle speed between 64 and 96 kph (40 and 60 mph), and engine run time greater than 3 minutes.

1. Set Condition: If the final state of change index is within the calibrated fail threshold. Two trip fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. ACTIVE DTC NOTE: Diagnose and repair any O2 Sensor DTCs before continuing with this test. NOTE: A new downstream O2 Sensor along with an aging upstream O2 Sensor may cause the DTC to set. Review the vehicle repair history before continuing. NOTE: It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set. NOTE: Attempt to operate the vehicle under conditions similar to which the DTC was set. Refer to Freeze Frame information. Start the engine and allow it to reach operating temperature. WARNING: 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. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. CATALYTIC CONVERTER Thoroughly inspect the catalytic converter for any of the following conditions: - Damage, dents, or holes - Severe discoloration caused by overheating - Internal damage Were any problems found? Yes Replace the Catalytic Converter. Repair the condition that may have caused the failure. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. CHECKING THE EXHAUST SYSTEM FOR LEAKS Perform the diagnostic procedure for «*CHECKING THE EXHAUST SYSTEM FOR LEAKS»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) . Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. CHECKING THE OXYGEN SENSOR OPERATION Perform the diagnostic procedure for «*CHECKING THE OXYGEN SENSOR OPERATION»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) . Were any problems found? Yes Repair as necessary in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 5 .
5. ENGINE MECHANICAL CONDITION NOTE: Check for signs of contamination that may have damaged the O2 Sensor(s) and Catalytic Converter, such as: contaminated fuel, unapproved silicone, evidence of oil, coolant or anti-seize compound. Repair as necessary. Check the exhaust for excessive smoke caused by an internal engine problem. Were any problems found? Yes Repair the engine mechanical condition in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 6 .
6. UPSTREAM O2 SENSOR A new downstream O2 Sensor along with an aging upstream O2 Sensor may cause this DTC to set. Review the vehicle repair history. Has the downstream O2 Sensor been replaced without replacing the upstream O2 Sensor? Yes Replace the upstream O2 Sensor as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 7 .
7. CATALYTIC CONVERTER If there are no possible causes remaining, view repair. Repair Replace the Catalytic Converter. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

Scheme 236

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the engine running after a cold start, the difference between ECT and AAT less than 10° C (18° F), fuel level between 12% and 88%, manifold vacuum greater than a minimum value, ambient temperature between 4° C and 37° C (39° F and 89° F) and altitude less than 8500 feet.

1. Set Condition: When the monitor conditions are met, the PCM will ramp in purge flow. If the PCM does not sense an ESM switch closure after a calculated amount of purge flow accumulation, an error is detected. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 237

Scheme 238

Scheme 239

1. DTC IS ACTIVE NOTE: Allow the vehicle to cool to ambient temperature before continuing with this procedure. NOTE: A loose gas cap may have caused this DTC to set. Make sure gas cap is tight and in good condition. Make sure the gas cap meets OEM specifications. Start the engine. Allow the engine to idle. Using the scan tool, perform the ESIM FORCED MONITOR TEST. Allow the test to complete. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. EVAP SYSTEM INSPECTION Inspect the EVAP System for any of the following conditions: - Holes or cracks - Loose seal points - Damaged or missing components - Incorrect routing of hoses and tubes - Loose or missing fuel cap - Damaged or missing fuel cap seal - Improper installation of the fuel cap - Damaged locking tabs on the fuel cap and/or filler tube - Damaged seal points on the fuel cap and/or filler tube Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. INSUFFICIENT VACUUM SUPPLY TO THE EVAP PURGE SOLENOID Inspect the EVAP Purge Solenoid vacuum supply hose for proper routing and installation. Make sure the vacuum supply hose between the throttle body or intake manifold and the EVAP Purge Solenoid is free from any contamination, obstructions or blockage. Make sure the EVAP Purge Solenoid and purge lines are free from any contamination, obstructions or blockage. Make sure the vacuum port at the throttle body or intake manifold is free from any contamination, obstructions or blockage. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. EVAP PURGE SOLENOID Disconnect the purge lines at the EVAP Purge Solenoid. Using a hand vacuum pump, apply 10 in Hg of vacuum to the "CAN" side of the EVAP Purge Solenoid. NOTE: The solenoid should hold vacuum for a minimum of 15 seconds. Turn the ignition on. With the scan tool, actuate the EVAP Purge Solenoid to the ON position. NOTE: The vacuum should drop when the solenoid is actuated. Does the solenoid function as described above? Yes Go to 5 . No Replace the EVAP Purge Solenoid. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
5. EVAP SYSTEM MONITOR SWITCH STATE Turn the ignition off. Disconnect the EVAP System Monitor Switch harness connector. Turn the ignition on. Read the EVAP System Monitor Switch state on the scan tool. Carefully connect a jumper wire between the (K107) ESM Signal circuit and the (Z166) Ground circuit in the EVAP System Monitor Switch harness connector. Read the EVAP System Monitor Switch state on the scan tool. Does the switch change from OPEN to CLOSED with the jumper in place? Yes Go to 8 . No Go to 6 .
6. (K107) ESM SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off. Disconnect the Powertrain Control Module (PCM) harness connectors. 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. Measure the resistance of the (K107) ESM Signal between the EVAP System Monitor Switch harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to 7 . No Repair the (K107) ESM Signal circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
7. (Z166) GROUND CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off. Using a 12 volt test light connected to 12 volts, check the (Z166) Ground circuit in the EVAP System Monitor Switch harness connector. NOTE: The test light should be illuminate and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go to 11 . No Repair the (Z166) Ground circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
8. EVAP PURGE HOSE/TUBE OBSTRUCTION Inspect the EVAP Purge hose/tube between the EVAP Purge Solenoid and the Fuel Tank and between the Fuel Tank and the EVAP Purge Canister for proper routing and installation. Make sure the hoses and tubes are not damaged, kinked, or blocked. Were any problems found? Yes Repair or replace as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 9 .
9. CHECKING THE EVAPORATIVE SYSTEM FOR LEAKS Perform the diagnostic procedure for «*CHECKING THE EVAPORATIVE SYSTEM FOR LEAKS»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) . Were any problems found? Yes Repair as necessary in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 10 .
10. EVAP SYSTEM MONITOR SWITCH Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP System Monitor Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the EVAP System Monitor Switch in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
11. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP System Monitor Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

The EVAP Purge Monitor tests the integrity of the hoses/tube between the throttle body/intake and the fuel tank. The monitor is a two stage test and runs only after the EVAP system passes the small leak test. Stage one is non-intrusive. The PCM monitors the purge vapor ratio and the ESM switch closed ratio. If the purge vapor ratio is above a calculated value, the monitor passes. If the ESM switch closed ratio is greater than calculated value when purge flow is greater than a minimum value, the monitor passes. Stage two is an intrusive test and runs only if stage one does not pass. The PCM commands the purge solenoid to flow at a specified rate to force the purge vapor ratio to update. The ratio is compared to a calibrated specification. If the ratio is less than the specification, a one trip failure is recorded. This test can detect if the purge hose is off, obstructed, or the purge valve is not operational.

1. When Monitored: With the engine running, after the EVAP System small leak test has passed.

1. Set Condition: If the PCM detects that the purge vapor ratio and the ESM switch closed ratio are below a calculated value, the PCM commands the purge solenoid to flow at a specified rate to update the purge vapor ratio. If the ratio remains below a specified value, a one trip failure is recorded. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. DTC IS ACTIVE NOTE: If P0443 is set along with this DTC, perform the diagnostic procedure for P0443 before continuing. Start the engine. Allow the engine to idle. Using the scan tool, perform the ESIM FORCED MONITOR TEST. Allow the test to complete. With a scan tool, select View DTCs. NOTE: If any other DTC sets, active or pending, perform the diagnostic procedure for that DTC before proceeding with this test. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. EVAP SYSTEM INSPECTION Inspect the EVAP System for any of the following conditions: - Holes or cracks - Loose seal points - Damaged or missing components - Incorrect routing of hoses and tubes - Loose or missing Fuel Cap - Damaged or missing Fuel Cap seal - Improper installation of the Fuel Cap - Damaged Locking tabs on the Fuel Cap and/or filler tube - Damaged seal points on the Fuel Cap and/or filler tube Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. INSUFFICIENT VACUUM SUPPLY TO THE EVAP PURGE SOLENOID Inspect the EVAP Purge Solenoid vacuum supply hose for proper routing and installation. Make sure the vacuum supply hose between the throttle body or intake manifold and the EVAP Purge Solenoid is free from any obstructions or blockage. Make sure the vacuum port at the throttle body or intake manifold is free from any obstructions or blockage. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. EVAP PURGE HOSE/TUBE OBSTRUCTION Inspect the EVAP Purge hose/tube for proper routing and installation between the EVAP Purge Solenoid and the Fuel Tank and between the Fuel Tank and the EVAP Purge Canister. Make sure the hose/tube is not damaged or kinked and is free from any obstructions or blockage. Were any problems found? Yes Repair or replace as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 5 .
5. EVAP PURGE SOLENOID Disconnect the purge lines at the EVAP Purge Solenoid. Using a hand vacuum pump, apply 10 in Hg of vacuum to the "CAN" side of the EVAP Purge Solenoid. NOTE: The solenoid should hold vacuum for a minimum of 15 seconds. Turn the ignition on. With the scan tool, actuate the Evaporative Purge Valve Solenoid Duty Cycle to the ON position. NOTE: The vacuum should drop when the solenoid is actuated. Does the solenoid function as described above? Yes Go to 6 . No Replace the EVAP Purge Solenoid. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP Purge Solenoid and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the engine run time above a calibrated value, battery voltage greater than 10.4 volts, ECT within a specific range, and the EVAP Purge Solenoid control active.

1. Set Condition: This PCM compares the circuit feedback to a calibrated closed range when the circuit is de-energized or to a calibrated open range when the circuit is energized. If the value is determined to be out of the calibrated range in either the de-energized or energized state for more than a calibrated amount of time, this DTC will set.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 240

Scheme 241

Scheme 242

Scheme 243

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, Clear DTCs in the Powertrain Control Module (PCM). With the scan tool, actuate the Evaporative Purge Valve Solenoid Duty Cycle. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. (K52) EVAP PURGE CONTROL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the EVAP Purge Solenoid connector. Disconnect the Powertrain Control Module (PCM) connector. Measure the voltage of the (K52) EVAP Purge Control circuit in the EVAP Purge Solenoid harness connector. Is there any voltage present? Yes Repair the (K52) EVAP Purge Control circuit for a short to voltage. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. (K52) EVAP PURGE CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the (K52) EVAP Purge Control circuit in the EVAP Purge Solenoid harness connector. Is the resistance above 100 ohms? Yes Go to 4 . No Repair the (K52) EVAP Purge Control circuit for a short to ground. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
4. (K52) EVAP PURGE CONTROL CIRCUIT OPEN OR HIGH RESISTANCE 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. Measure the resistance of the (K52) EVAP Purge Control circuit between the EVAP Purge Solenoid harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to 5 . No Repair the (K52) EVAP Purge Control circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
5. (K70) EVAP PURGE RETURN CIRCUIT OPEN OR HIGH RESISTANCE 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. Measure the resistance of the (K70) EVAP Purge Return circuit between the EVAP Purge Solenoid harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to 6 . No Repair the (K70) EVAP Purge Return circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. EVAP PURGE SOLENOID Connect the Powertrain Control Module (PCM) connector. Turn the ignition on. With the scan tool, actuate the Evaporative Purge Valve Solenoid Duty Cycle. Using a 12 volt test light connected to ground, check the (K52) EVAP Purge Control circuit in the EVAP Purge Solenoid harness connector. NOTE: If the DTC is active, the actuation test may not be allowed by the PCM. If may be necessary to clear the DTCs before starting the actuation. NOTE: The voltage supplied to the solenoid circuit during the actuation may be less than battery voltage. The test light should be illuminated, but may not be as bright as a direct connection to the battery. Is the test light illuminated during the actuation? Yes Replace the EVAP Purge Solenoid in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 7 .
7. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP Purge Solenoid and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: Immediately after key off.

1. Set Condition: At key off, the PCM energizes the Purge Solenoid for a calibrated amount of time (30 seconds maximum) and stores the state of the ESIM switch. The state is evaluated again at the next key on. If the PCM does not detect that the ESIM switch is open, an error is detected. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 244

1. DTC IS ACTIVE NOTE: Allow the vehicle to cool to ambient temperature before continuing with this procedure. Start the engine. Allow the engine to idle. Using the scan tool, perform the ESIM FORCED MONITOR TEST. Monitor the EVAP System Monitor Switch state during the test. Does the EVAP System Monitor Switch state remain 'Closed' throughout the test? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. EVAP SYSTEM MONITOR SWITCH STATE With a scan tool, select Data Display and view the EVAP System Monitor Switch state. Disconnect the purge hose from the EVAP canister. Does the EVAP System Monitor Switch state change from 'Closed' to 'Open' when the purge hose was disconnected? Yes Go to 3 . No Go to 6 .
3. EVAP PURGE HOSE/TUBE OBSTRUCTION Inspect the EVAP Purge hose/tube between the EVAP Purge Solenoid and the Fuel Tank and between the Fuel Tank and the EVAP Purge Canister for proper routing and installation. Make sure the hoses and tubes are not damaged, kinked, or blocked. Were any problems found? Yes Repair or replace as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. (K52) EVAP PURGE CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the PCM harness connector. Measure the resistance between ground and the (K52) EVAP Purge Control circuit in the EVAP Purge Solenoid harness connector. Is the resistance below 100 ohms? Yes Repair the (K52) EVAP Purge Control circuit for a short to ground. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 5 .
5. EVAP PURGE SOLENOID Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP Purge Solenoid and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the EVAP Purge Solenoid in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. EVAP SYSTEM MONITOR SWITCH With a scan tool, select Data Display and view the EVAP System Monitor Switch state. Disconnect the EVAP System Monitor Switch electrical connector. Does the EVAP System Monitor Switch state change from CLOSED to OPEN when the switch is disconnected? Yes Replace the EVAP System Monitor Switch. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 7 .
7. (K107) ESM SIGNAL SHORTED TO GROUND Turn the ignition off. Disconnect the Powertrain Control Module (PCM) harness connector. Measure the resistance between ground and the (K107) ESM Signal circuit in the EVAP System Monitor Switch harness connector. Is the resistance below 100 ohms? Yes Repair the (K107) ESM Signal circuit for a short to ground. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 8 .
8. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP Purge Solenoid and the Powertrain Control Module (PCM) and between the EVAP System Monitor Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the engine running, during a cold start test with the fuel level above 12%, ambient temperature between 4° C and 32° C (39° F and 89° F) and the fuel system in closed loop. The test runs when the small leak test is maturing.

1. Set Condition: The PCM activates the EVAP Purge Solenoid to pull the EVAP system into a vacuum to close the ESM switch. Once the ESM switch is closed, the PCM turns the EVAP Purge solenoid off to seal the EVAP system. If the ESM switch reopens before the calibrated amount of time, a large leak error is detected. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. DTC IS ACTIVE NOTE: Allow the vehicle to cool to ambient temperature before continuing with this procedure. NOTE: A loose gas cap may have caused this DTC to set. Make sure gas cap is tight and in good condition. Make sure the gas cap meets OEM specifications. Start the engine. Allow the engine to idle. Using the scan tool, perform the ESIM FORCED MONITOR TEST. Allow the test to complete. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. EVAP SYSTEM INSPECTION Inspect the EVAP System for any of the following conditions: - Holes or cracks - Loose seal points - Damaged or missing components - Incorrect routing of hoses and tubes - Loose or missing fuel cap - Damaged or missing fuel cap seal - Improper installation of the fuel cap - Damaged locking tabs on the fuel cap and/or filler tube - Damaged seal points on the fuel cap and/or filler tube Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. EVAP PURGE SOLENOID Disconnect the purge lines at the EVAP Purge Solenoid. Using a hand vacuum pump, apply 10 in Hg of vacuum to the "CAN" side of the EVAP Purge Solenoid. NOTE: The solenoid should hold vacuum for a minimum of 15 seconds. Turn the ignition on. With the scan tool, actuate the EVAP Purge Solenoid to the ON position. NOTE: The vacuum should drop when the solenoid is actuated. Does the solenoid function as described above? Yes Go to 4 . No Replace the EVAP Purge Solenoid. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
4. EVAP PURGE HOSE/TUBE OBSTRUCTION Inspect the EVAP Purge hose/tube between the EVAP Purge Solenoid and the Fuel Tank and between the Fuel Tank and the EVAP Purge Canister for proper routing and installation. Make sure the hoses and tubes are not damaged, kinked, or blocked. Were any problems found? Yes Repair or replace as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 5 .
5. CHECKING THE EVAPORATIVE SYSTEM FOR LEAKS Perform the diagnostic procedure for «*CHECKING THE EVAPORATIVE SYSTEM FOR LEAKS»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) . Were any problems found? Yes Repair as necessary in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 6 .
6. EVAP SYSTEM MONITOR SWITCH Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the EVAP System Monitor Switch and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the EVAP System Monitor Switch in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the ignition off, fuel level less than 88%, ambient temperature between 4° C and 43° C (39° F and 109° F).

1. Set Condition: As temperatures change, a vacuum is created in the fuel tank and EVAP system. With the EVAP system sealed, the PCM monitors the ESM switch. If the ESM switch does not close within a calibrated time, an error is detected by the PCM. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. EVAP SYSTEM INSPECTION Inspect the EVAP System for any of the following conditions: - Holes or cracks - Loose seal points - Damaged or missing components - Incorrect routing of hoses and tubes - Loose or missing fuel cap - Damaged or missing fuel cap seal - Improper installation of the fuel cap - Damaged locking tabs on the fuel cap and/or filler tube - Damaged seal points on the fuel cap and/or filler tube Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 2 .
2. EVAP PURGE SOLENOID Disconnect the purge lines at the EVAP Purge Solenoid. Using a hand vacuum pump, apply 10 in Hg of vacuum to the "CAN" side of the EVAP Purge Solenoid. NOTE: The solenoid should hold vacuum for a minimum of 15 seconds. Turn the ignition on. With the scan tool, actuate the EVAP Purge Solenoid to the ON position. NOTE: The vacuum should drop when the solenoid is actuated. Does the solenoid function as described above? Yes Go to 3 . No Replace the EVAP Purge Solenoid. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
3. EVAP PURGE HOSE/TUBE OBSTRUCTION Inspect the EVAP Purge hose/tube between the EVAP Purge Solenoid and the Fuel Tank and between the Fuel Tank and the EVAP Purge Canister for proper routing and installation. Make sure the hoses and tubes are not damaged, kinked, or blocked. Were any problems found? Yes Repair or replace as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. CHECKING THE EVAPORATIVE SYSTEM FOR LEAKS Perform the diagnostic procedure for «*CHECKING THE EVAPORATIVE SYSTEM FOR LEAKS»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) . Were any problems found? Yes Repair as necessary in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: After the PCM detects a significant fuel level change.

1. Set Condition: If the PCM detects a large leak in the Evaporative System for two consecutive cold start trips after a significant fuel level change, this DTC will set. One good trip turns off the MIL.

1. DTC IS ACTIVE NOTE: If DTC P0455-EVAP SYSTEM LARGE LEAK is set along with this DTC, perform the diagnostic procedure for «P0455-EVAP SYSTEM LARGE LEAK»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-p0403-to-p050d) before continuing with this test. NOTE: Do not replace the gas cap for DTC P0457-EVAP SYSTEM - LOOSE FUEL CAP. With a scan tool, select View DTCs. Is the status Active for DTC P0455-EVAP SYSTEM LARGE LEAK along with this DTC? Yes Perform the diagnostic procedure for «P0455-EVAP SYSTEM LARGE LEAK»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-p0403-to-p050d) . No No repair is necessary. Verify that the gas cap is in place and tight. Clear DTCs and follow the directions outlined in the service information under Instrument Cluster on resetting the odometer or message center display.

Scheme 245

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With engine run time greater than 128 seconds.

1. Set Condition: The PCM detects no change in Fuel Level Sensor 1 circuit voltage over time during monitoring.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 246

Scheme 247

Scheme 248

Scheme 249

Scheme 250

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, select View DTCs and review the DTC environmental information. Is the good trip counter greater than 0? Yes The DTC is not active at this time. Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure. No Go to 2 .
2. EXTERIOR FUEL TANK DAMAGE Inspect the exterior of the fuel tank for any damage that may restrict the movement of the fuel level sensor float. Were any problems found? Yes Replace the fuel tank as necessary. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Go to 3 .
3. FUEL PUMP MODULE WIRING HARNESS INSPECTION Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Pump Module harness connector and the Totally Integrated Power Module (TIPM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Were any problems found? Yes Repair as necessary. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Go to 4 .
4. (N4) FUEL LEVEL SIGNAL 1 CIRCUIT VOLTAGE Turn the ignition off. Disconnect the Fuel Pump Module harness connector. Turn the ignition on. With the scan tool, read the Fuel Level Sensor 1 circuit voltage. NOTE: The sensor voltage should be approximately 5.0 volts (plus or minus.1 volt) with connector disconnected. Turn the ignition off. Connect a jumper wire between the (N4) Fuel Level Signal 1 and the (P37) Sensor Ground circuit in the Fuel Pump Module harness connector. Turn the ignition on. With the scan tool, read the Fuel Level Sensor 1 circuit voltage. NOTE: The sensor voltage should be approximately 0.0 volts (plus or minus.1 volt) with the jumper wire in place. Does the scan tool display the voltage as described above? Yes Go to 5 . No Go to 7 .
5. FUEL TANK WIRING HARNESS INSPECTION WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting or line, the fuel system pressure must be released. Failure to follow these instructions can result in personal injury or death. Remove the fuel tank in accordance with the Service Information. Inspect the Fuel Tank wiring harness and connectors. Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Were any problems found? Yes Repair as necessary. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Go to 6 .
6. FUEL LEVEL SENSOR 1 INSPECTION Remove Fuel Level Sensor 1 sensor. Inspect Fuel Level Sensor 1 and the inside of the fuel tank for any condition that would restrict the movement of the fuel level sensor float. Were any problems found? Yes Repair or replace the fuel tank components as necessary. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Replace Fuel Level Sensor 1. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .
7. (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Totally Integrated Power Module (TIPM) connector. Turn the ignition on. Measure the voltage of the (N4) Fuel Level Signal 1 circuit in the Fuel Level Sensor 1 harness connector. Is there any voltage present? Yes Repair the (N4) Fuel Level Signal 1 circuit for a short to voltage. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Go to 8 .
8. (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the (N4) Fuel Level Signal 1 circuit in the Fuel Level Sensor 1 harness connector. Is the resistance above 100 ohms? Yes Go to 9 . No Repair the (N4) Fuel Level Signal 1 circuit for a short to ground. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .
9. (N4) FUEL LEVEL SIGNAL 1 CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (N4) Fuel Level Signal 1 circuit between the Fuel Pump Module harness connector and the Totally Integrated Power Module (TIPM) harness connector. Is the resistance below 5.0 ohms? Yes Go to 10 . No Repair the (N4) Fuel Level Signal 1 circuit for an open circuit or high resistance. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .
10. (P37) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (P37) Sensor Ground circuit between the Fuel Pump Module harness connector and the Totally Integrated Power Module (TIPM) harness connector. Is the resistance below 5.0 ohms? Yes Go to 11 . No Repair the (P37) Sensor Ground circuit for an open circuit or high resistance. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .
11. TOTALLY INTEGRATED POWER MODULE (TIPM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Pump Module and the Totally Integrated Power Module (TIPM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the ignition on and battery voltage greater than 10.4 volts.

1. Set Condition: The Fuel Level Sensor 1 input voltage is below the minimum acceptable value.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. DTC IS ACTIVE NOTE: Diagnose and repair any system voltage DTCs before continuing with this test. NOTE: Diagnose and repair any communication DTCs before continuing with this test. Start the engine and allow it to reach operating temperature. WARNING: 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. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO GROUND Turn the ignition off. Disconnect the Fuel Pump Module harness connector. Disconnect the Totally Integrated Power Module (TIPM) connector. Measure the resistance between ground and the (N4) Fuel Level Signal 1 circuit in the Fuel Pump Module harness connector. Is the resistance above 100 ohms? Yes Go to 3 . No Repair the (N4) Fuel Level Signal 1 circuit for a short to ground. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .
3. (N4) FUEL LEVEL SIGNAL 1 CIRCUIT OPEN CIRCUIT OR HIGH RESISTANCE Measure the resistance of the (N4) Fuel Level Signal 1 circuit between the Fuel Pump Module harness connector and the Totally Integrated Power Module (TIPM) harness connector. Is the resistance below 5.0 ohms? Yes Go to 4 . No Repair the (N4) Fuel Level Signal 1 circuit for an open circuit or high resistance. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .
4. FUEL TANK WIRING HARNESS INSPECTION WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting or line, the fuel system pressure must be released. Failure to follow these instructions can result in personal injury or death. Remove the fuel tank in accordance with the Service Information. Inspect the wiring and connectors between the Fuel Pump Module harness connector and the Fuel Level Sensor 1 connector. Look for any chafed, pierced, pinched, shorted, or broken wires. Look for broken, bent, pushed out or corroded terminals. Were any problems found? Yes Repair as necessary. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Go to 5 .
5. FUEL LEVEL SENSOR 1 Turn the ignition off. Connect the Fuel Pump Module harness connector. Connect the Totally Integrated Power Module (TIPM) connector. Turn the ignition on. With the scan tool, read the Fuel Level Sensor 1 signal voltage. NOTE: The sensor voltage should be approximately 5.0 volts (plus or minus.1 volt) with the Fuel Level Sensor 1 harness connector disconnected. Does the scan tool display the voltage as described above? Yes Replace the Fuel Level Sensor 1 in accordance with the service information. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Go to 6 .
6. TOTALLY INTEGRATED POWER MODULE (TIPM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Level Sensor 1 harness connector and the Totally Integrated Power Module (TIPM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Replace and program the Totally Integrated Power Module (TIPM) in accordance with the Service Information. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the ignition on and battery voltage greater than 10.4 volts.

1. Set Condition: The Fuel Level Sensor 1 input voltage is above the maximum acceptable value.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. DTC IS ACTIVE NOTE: Diagnose and repair any system voltage DTCs before continuing with this test. NOTE: Diagnose and repair any communication DTCs before continuing with this test. Start the engine and allow it to reach operating temperature. WARNING: 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. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. (N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Fuel Tank Module harness connector. Disconnect the Totally Integrated Power Module (TIPM) connector. Turn the ignition on. Measure the voltage of the (N4) Fuel Level Signal 1 circuit in the Fuel Tank Module harness connector. Is there any voltage present? Yes Repair the (N4) Fuel Level Signal 1 circuit for a short to voltage. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Go to 3 .
3. (N4) FUEL LEVEL SIGNAL 1 OPEN OR HIGH RESISTANCE Turn the ignition off. Measure the resistance of the (N4) Fuel Level Signal 1 circuit between the Fuel Tank Module harness connector and the Totally Integrated Power Module (TIPM) connector. Is the resistance below 5.0 ohms? Yes Go to 4 . No Repair the (N4) Fuel Level Signal 1 circuit for an open circuit or high resistance. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .
4. (P37) SENSOR GROUND CIRCUIT OPEN OR HIGH RESISTANCE Measure the resistance of the (P37) Sensor Ground circuit between the Fuel Pump Module harness connector and the Totally Integrated Power Module (TIPM) harness connector. Is the resistance below 5.0 ohms? Yes Go to 5 . No Repair the (P37) Sensor Ground circuit for an open circuit or high resistance. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .
5. FUEL TANK WIRING HARNESS INSPECTION WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or servicing any fuel system hose, fitting or line, the fuel system pressure must be released. Failure to follow these instructions can result in personal injury or death. Remove the fuel tank in accordance with the Service Information. Inspect the wiring and connectors between the Fuel Tank Module harness connector and the Fuel Level Sensor 1 connector. Look for any chafed, pierced, pinched, shorted, or broken wires. Look for broken, bent, pushed out or corroded terminals. Were any problems found? Yes Repair as necessary. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Go to 6 .
6. FUEL LEVEL SENSOR 1 Turn the ignition off. Connect the Fuel Tank Module harness connector. Connect the Totally Integrated Power Module (TIPM) connector. Connect a jumper wire between the (N4) Fuel Level Signal 1 and the (P37) Sensor Ground circuit in the Fuel Pump Module harness connector. Turn the ignition on. With the scan tool, read the Fuel Level Signal 1 voltage. NOTE: The sensor voltage should be approximately 0.0 volts (plus or minus.1 volt) with the jumper wire in place. Does the scan tool display the voltage as described above? Yes Replace the Fuel Level Sensor 1 in accordance with the Service Information. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Go to 7 .
7. TOTALLY INTEGRATED POWER MODULE (TIPM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Fuel Level Sensor 1 harness connector and the Totally Integrated Power Module (TIPM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) . No Replace and program the Totally Integrated Power Module (TIPM) in accordance with the Service Information. Perform «BODY VERIFICATION TEST VER-1»(/chrysler/town-country/v-2007-2010/remont/communication-devices/#electronic-control-modules-electrical-diagnostics) .

Scheme 251

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the engine running, battery voltage greater than 10.4 volts, and the Cooling Fan 1 control active.

1. Set Condition: The PCM detects an open or shorted condition in the Cooling Fan 1 control circuit.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 252

Scheme 253

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, actuate the Cooling Fan 1 control. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. FUSED B+ CIRCUIT(S) OPEN OR HIGH RESISTANCE Turn the ignition off. Remove the Radiator Fan Low Speed Relay from the TIPM. Turn the ignition on. Using a 12 volt test light connected to ground, check the Fused B+ circuits in the Radiator Fan Low Speed Relay connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go to 3 . No Repair the Fused B+ circuit(s) for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
3. COOLING FAN 1 CONTROL ACTUATION Turn the ignition off. Remove the Cooling Fan Low Speed Relay from the TIPM. Turn the ignition on. With the scan tool, actuate the Cooling Fan 1 control to ON. Using a 12 volt test light connected to ground, check the (N23) RAD Fan Low Speed Control circuit in the Radiator Fan Resistor harness connector. NOTE: The test light should be illuminated and bright proportional to the maximum duty cycle allowed by the scan tool. For example, if the scan tool allows 100% actuation, the brightness should be as bright as a direct connection to the battery. If the scan tool allows a maximum 25% actuation, the brightness should be 25% as bright as a direct connection to the battery. With the scan tool, actuate the Radiator Fan Resistor control to OFF. Using a 12 volt test light connected to ground, check the (N23) RAD Fan Low Speed Control circuit in the Radiator Fan Resistor harness connector. NOTE: The test light should not be illuminated with the control actuated OFF (0%). Is the test light illuminated when actuated ON and not illuminated when actuated OFF as described above? Yes Go to 4 . No Go to 5 .
4. RADIATOR FAN LOW SPEED RELAY Turn the ignition off. Inspect the connectors where the Radiator Fan Low Speed Relay connects to the Totally Integrated Power Module. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related connectors. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the Radiator Fan Low Speed Relay in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
5. TOTALLY INTEGRATED POWER MODULE Inspect the connectors where the Radiator Fan Low Speed Relay connects to the Totally Integrated Power Module. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related connectors. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Totally Integrated Power Module in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With the engine running, battery voltage greater than 10.4 volts, and the Cooling Fan 2 control active.

1. Set Condition: The PCM detects an open or shorted condition in the Cooling Fan 2 control circuit.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 254

Scheme 255

Scheme 256

Scheme 257

1. DTC IS ACTIVE Turn the ignition on. With the scan tool, actuate the Cooling Fan 2 control. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. (K175) RAD FAN HIGH SPEED CONTROL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Radiator Fan High Relay connector. Disconnect the C3 Totally Integrated Power Module harness connector. Turn the ignition on. Measure the voltage of the (K175) RAD Fan High Speed Control circuit in the Radiator Fan High Relay harness connector. Is there any voltage present? Yes Repair the (K175) RAD Fan High Speed Control circuit for a short to voltage. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. (K175) RAD FAN HIGH SPEED CONTROL CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the (K175) RAD Fan High Speed Control circuit in the Radiator Fan High Relay harness connector. Is the resistance below 100 ohms? Yes Repair the short to ground in the (K175) RAD Fan High Speed Control circuit. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. (K175) RAD FAN HIGH SPEED CONTROL CIRCUIT OPEN OR HIGH RESISTANCE NOTE: 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. Measure the resistance of the (K175) RAD Fan High Speed Control circuit between the Radiator Fan High Relay harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to 5 . No Repair the (K175) RAD Fan High Speed Control circuit for an open circuit or high resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
5. RADIATOR FAN HIGH RELAY CONTROL ACTUATION Connect the Totally Integrated Power Module connector. Turn the ignition on. With the scan tool, actuate the Cooling Fan 2 control to ON. Using a 12 volt test light connected to ground, check the (K175) RAD Fan High Speed Control circuit in the Radiator Fan High Relay harness connector. NOTE: The test light should be illuminated and bright proportional to the maximum duty cycle allowed by the scan tool. For example, if the scan tool allows 100% actuation, the brightness should be as bright as a direct connection to the battery. If the scan tool allows a maximum 25% actuation, the brightness should be 25% as bright as a direct connection to the battery. With the scan tool, actuate the Radiator Fan High Relay control to OFF. Using a 12 volt test light connected to ground, check the (K175) RAD Fan High Speed Control circuit in the Radiator Fan High Relay harness connector. NOTE: The test light should not be illuminated with the control actuated OFF (0%). Is the test light illuminated when actuated ON and not illuminated when actuated OFF as described above? Yes Go to 6 . No Go to 7 .
6. RADIATOR FAN HIGH RELAY Turn the ignition off. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Radiator Fan High Relay and the Totally Integrated Power Module. Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related connectors. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the Radiator Fan High Relay in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
7. TOTALLY INTEGRATED POWER MODULE Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Radiator Fan High Relay and the Totally Integrated Power Module. Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Verify that there is good pin to terminal contact in the related connectors. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Totally Integrated Power Module in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With engine run time greater than 5 seconds, ECT above -8° C (17.6° F), transmission not in park or neutral, brakes not applied, engine RPM greater than 1500, and no ECT, MAP, TPS, ETC, or brake switch stuck DTCs present.

1. Set Condition: The PCM receives no vehicle speed signal for 120 seconds. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. ACTIVE DTC Diagnose and repair any communication DTCs before continuing with this test. Diagnose and repair any DTCs set in the ABS Module before continuing with this test. Verify that the correct Pinion Factor and tire size are programmed into the ABS module before continuing. If necessary, update and retest. Start the engine and allow it to reach operating temperature. WARNING: 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. NOTE: It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. TIRE INSPECTION NOTE: This DTC can set as a result of excessive wheel speed variation, caused by unequal tire circumference or by front or rear wheels slipping (on loose gravel or ice, due to hard acceleration, etc.) Inspect all tires for proper inflation and excessive wear. Review Freeze Frame information to determine road and driving conditions when the fault set. Were any problems found? Yes Repair as necessary. If the DTC set during a front or rear wheel spin condition, no repair is necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Anti-lock Brake Module and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

1. When Monitored: With engine run time greater than 5 seconds, ECT above -8° C (17.6° F), transmission not in park or neutral, brakes not applied, engine RPM greater than 1500, and no ECT, MAP, TPS, ETC, or brake switch stuck DTCs present.

1. Set Condition: The PCM receives an erratic vehicle speed signal. One Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. ACTIVE DTC Diagnose and repair any communication DTCs before continuing with this test. Diagnose and repair any DTCs set in the ABS Module before continuing with this test. Verify that the correct Pinion Factor and tire size are programmed into the ABS module before continuing. If necessary, update and retest. Start the engine and allow it to reach operating temperature. WARNING: 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. NOTE: It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. TIRE INSPECTION NOTE: This DTC can set as a result of excessive wheel speed variation, caused by unequal tire circumference or by front or rear wheels slipping (on loose gravel or ice, due to hard acceleration, etc.) Inspect all tires for proper inflation and excessive wear. Review Freeze Frame information to determine road and driving conditions when the fault set. Were any problems found? Yes Repair as necessary. If the DTC set during a front or rear wheel spin condition, no repair is necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Anti-lock Brake Module and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

The PCM evaluates the ability of the idle speed control system to achieve and maintain a steady idle by monitoring engine RPM during idle. If engine RPM is not within a calibrated dead band of target idle speed, a timer is started. If the timer reaches a maximum threshold without the RPM trending towards control, a fault is set.

1. When Monitored: With the engine idling in drive, the brake applied, engine run time above a minimum calibrated value, and no VSS, MAF/MAP, ECT, TPS, ETC, CKP Sensor, fuel system, or injector DTCs present.

1. Set Condition: The PCM detects that engine speed is 100 RPM or more below target idle for 30 seconds. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. ACTIVE DTC NOTE: It is possible for ETC DTCs to be set at the same time as this DTC. Proceed with this test only if the other DTCs that are present are ETC related, but clear them before proceeding. If any other DTCs are set, they must be diagnosed and repaired before continuing this test. Start the engine and allow it to reach operating temperature. WARNING: 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. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. AIR INDUCTION SYSTEM Inspect the air induction system for the following problems: Restrictions - dirty air cleaner, foreign material trapped in the air intake tube, etc. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. PCV SYSTEM Inspect the PCV system for the following problems: Restrictions - sticking valve, collapsed hoses or tubes, obstructed passages or ports, etc. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. THROTTLE BODY OPERATION WARNING: 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. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Inspect the throttle body for carbon build up or other restrictions. Using a straight edge, verify that the throttle plate is not bent. If the throttle plate is bent, the throttle body must be replaced. Start the engine. While the engine is running, lightly tap on the ETC Motor, and listen for the idle to change. If the idle changes, the throttle body must be replaced. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 5 .
5. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

The objective of the Idle Speed Rationality monitor is to evaluate the ability of the idle speed control system to achieve and maintain a steady idle, by monitoring engine RPM during idle. If engine RPM is not within a calibrated dead band of target idle speed, a timer is started. If the timer reaches a maximum threshold without any sign of the RPM trending towards control, a fault is generated.

1. When Monitored: With the engine idling in drive, the brake applied, engine run time above a minimum calibrated value, and no VSS, MAF/MAP, ECT, TPS, ETC, CKP Sensor, fuel system, or injector DTCs present.

1. Set Condition: Engine speed is 200 RPM or more above target idle speed for 30 seconds. Two Trip Fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. ACTIVE DTC NOTE: It is possible for ETC DTCs to be set at the same time as this DTC. Proceed with this test only if the other DTCs that are present are ETC related, but clear them before proceeding. If any other DTCs are set, they must be diagnosed and repaired before continuing this test. Start the engine and allow it to reach operating temperature. WARNING: 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. With a scan tool, select View DTCs. Is the status Active for this DTC? Yes Go to 2 . No Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure.
2. AIR INDUCTION SYSTEM Inspect the air induction system for the following problems: Leaks - air intake tube connection, air cleaner housing, etc. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. PCV SYSTEM Inspect the PCV system for the following problems: Leaks - cracked or damaged hoses or tubes, poor hose or tube connections, PCV valve stuck open, etc. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. ENGINE VACUUM LEAKS WARNING: 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. Inspect the engine for external vacuum leaks. Inspect the engine for internal leaks. Were any problems found? Yes Repair as necessary in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 5 .
5. THROTTLE BODY OPERATION WARNING: 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. Inspect the throttle body for carbon build up or other restrictions. Using a straight edge, verify that the throttle plate is not bent. If the throttle plate is bent, the throttle body must be replaced. Start the engine. While the engine is running, lightly tap on the ETC Motor, and listen for the idle to change. If the idle changes, the throttle body must be replaced. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 6 .
6. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the throttle body and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

Scheme 258

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

Spark adjustment during a cold start is intended to provide quick response to idle speed variations. The PCM monitors spark advance on a cold start over a period of time, then compares the average spark advance to a threshold.

1. When Monitored: During a cold start condition, with the difference between the AAT and ECT at startup below 10° C (50° F), and the engine running at idle.

1. Set Condition: The PCM detects that engine speed is 50 RPM or more (depending on vehicle specifications) below target idle speed for more than 3 seconds, and the average spark advance is above the failure threshold for more than the specified limit. Two trip fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 259

Scheme 260

1. ACTIVE DTC NOTE: Low battery voltage can cause excessive current draw in very hot and very cold ambient temperatures. Look closely at the temperatures at which this DTC set and make sure the battery can pass a load test before continuing. NOTE: Diagnose and repair any other DTCs set in the PCM before proceeding with this test. Turn the ignition on. With the scan tool, select View DTCs and review the DTC environmental information. Is the good trip counter greater than 0? Yes The DTC is not active at this time. Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure. No Go to 2 .
2. THROTTLE PLATE INSPECTION Turn the ignition off. Remove the air cleaner assembly. Check for any signs of a foreign material (ice, dirt, or excessive carbon build up) on the throttle plate or in the bore causing the throttle plate to stick. Were any problems found? Yes Remove the debris if possible or replace the Throttle Body. Disconnect the battery when replacing the Throttle Body. After installation is complete, use a scan tool and perform the ETC RELEARN function. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. DIRTY AIR FILTER Remove and inspect the air filter. Were any problems found? Yes Replace the air filter. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. CONTAMINATED FUEL Inspect the fuel for contamination. (dirt, water, or other foreign material) Were any problems found? Yes Drain the fuel from the fuel tank into an approved gas holding tank and add clean fuel. Refer to «STANDARD PROCEDURE»(/chrysler/town-country/v-2007-2010/remont/fuel-system/#fuel-system) . No Go to 5 .
5. EXCESSIVE RESISTANCE IN THE (K124) ETC MOTOR (+) CIRCUIT Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K124) ETC Motor (+) circuit at the Throttle Body harness connector and by probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 6 . No Repair the (K124) ETC Motor (+) for excessive resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. EXCESSIVE RESISTANCE IN THE (K126) ETC MOTOR (-) CIRCUIT Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K126) ETC Motor (-) circuit at the Throttle Body harness connector and by probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 7 . No Repair the (K126) ETC Motor (-) for excessive resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
7. THROTTLE BODY Turn the ignition off. Disconnect special tool #8815-1 from the C2 PCM harness connector. NOTE: Use special tool #8815 to avoid possible damage to the Throttle Body harness connector. Measure the resistance of the ETC Motor by probing the appropriate terminals of special tool #8815 for the (K124) ETC Motor (+) circuit and the (K126) ETC Motor (-) circuit. Is the resistance between 2.5 and 25 ohms at closed throttle? Yes Go to 8 . No Replace the Throttle Body. Disconnect the battery when replacing the Throttle Body. After installation is complete, use a scan tool and perform the ETC RELEARN function. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
8. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

Spark adjustment during a cold start is intended to provide quick response to idle speed variations. The PCM monitors spark advance on a cold start over a period of time, then compares the average spark advance to a threshold.

1. When Monitored: During a cold start condition, with the difference between the AAT and ECT at startup below 10° C (50° F), and the engine running at idle.

1. Set Condition: The PCM detects that engine speed is 50 RPM or more (depending on vehicle specifications) below target idle speed for more than 3 seconds, and the average spark advance is above the failure threshold for more than the specified limit. Two trip fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

Scheme 261

Scheme 262

1. ACTIVE DTC NOTE: Low battery voltage can cause excessive current draw in very hot and very cold ambient temperatures. Look closely at the temperatures at which this DTC set and make sure the battery can pass a load test before continuing. NOTE: Diagnose and repair any other DTCs set in the PCM before proceeding with this test. Turn the ignition on. With the scan tool, select View DTCs and review the DTC environmental information. Is the good trip counter greater than 0? Yes The DTC is not active at this time. Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure. No Go to 2 .
2. THROTTLE PLATE INSPECTION Turn the ignition off. Remove the air cleaner assembly. Check for any signs of a foreign material (ice, dirt, or excessive carbon build up) on the throttle plate or in the bore causing the throttle plate to stick. Were any problems found? Yes Remove the debris if possible or replace the Throttle Body. Disconnect the battery when replacing the Throttle Body. After installation is complete, use a scan tool and perform the ETC RELEARN function. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. DIRTY AIR FILTER Remove and inspect the air filter. Were any problems found? Yes Replace the air filter. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. CONTAMINATED FUEL Inspect the fuel for contamination. (dirt, water, or other foreign material) Were any problems found? Yes Drain the fuel from the fuel tank into an approved gas holding tank and add clean fuel. Refer to «STANDARD PROCEDURE»(/chrysler/town-country/v-2007-2010/remont/fuel-system/#fuel-system) . No Go to 5 .
5. EXCESSIVE RESISTANCE IN THE (K124) ETC MOTOR (+) CIRCUIT Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K124) ETC Motor (+) circuit at the Throttle Body harness connector and by probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 6 . No Repair the (K124) ETC Motor (+) for excessive resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. EXCESSIVE RESISTANCE IN THE (K126) ETC MOTOR (-) CIRCUIT Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K126) ETC Motor (-) circuit at the Throttle Body harness connector and by probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 7 . No Repair the (K126) ETC Motor (-) for excessive resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
7. THROTTLE BODY Turn the ignition off. Disconnect special tool #8815-1 from the C2 PCM harness connector. NOTE: Use special tool #8815 to avoid possible damage to the Throttle Body harness connector. Measure the resistance of the ETC Motor by probing the appropriate terminals of special tool #8815 for the (K124) ETC Motor (+) circuit and the (K126) ETC Motor (-) circuit. Is the resistance between 2.5 and 25 ohms at closed throttle? Yes Go to 8 . No Replace the Throttle Body. Disconnect the battery when replacing the Throttle Body. After installation is complete, use a scan tool and perform the ETC RELEARN function. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
8. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

Spark adjustment during a cold start is intended to provide quick response to idle speed variations. The PCM monitors spark advance on a cold start over a period of time, then compares the average spark advance to a threshold.

1. When Monitored: During a cold start condition, with the difference between the AAT and ECT at startup below 10° C (50° F), and the engine running at idle.

1. Set Condition: The PCM detects that engine speed is 50 RPM or more (depending on vehicle specifications) below target idle speed for more than 3 seconds, and the average spark advance is above the failure threshold for more than the specified limit. Two trip fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. ACTIVE DTC NOTE: Low battery voltage can cause excessive current draw in very hot and very cold ambient temperatures. Look closely at the temperatures at which this DTC set and make sure the battery can pass a load test before continuing. NOTE: Diagnose and repair any other DTCs set in the PCM before proceeding with this test. Turn the ignition on. With the scan tool, select View DTCs and review the DTC environmental information. Is the good trip counter greater than 0? Yes The DTC is not active at this time. Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure. No Go to 2 .
2. THROTTLE PLATE INSPECTION Turn the ignition off. Remove the air cleaner assembly. Check for any signs of a foreign material (ice, dirt, or excessive carbon build up) on the throttle plate or in the bore causing the throttle plate to stick. Were any problems found? Yes Remove the debris if possible or replace the Throttle Body. Disconnect the battery when replacing the Throttle Body. After installation is complete, use a scan tool and perform the ETC RELEARN function. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. DIRTY AIR FILTER Remove and inspect the air filter. Were any problems found? Yes Replace the air filter. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. CONTAMINATED FUEL Inspect the fuel for contamination. (dirt, water, or other foreign material) Were any problems found? Yes Drain the fuel from the fuel tank into an approved gas holding tank and add clean fuel. Refer to «STANDARD PROCEDURE»(/chrysler/town-country/v-2007-2010/remont/fuel-system/#fuel-system) . No Go to 5 .
5. EXCESSIVE RESISTANCE IN THE (K124) ETC MOTOR (+) CIRCUIT Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K124) ETC Motor (+) circuit at the Throttle Body harness connector and by probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 6 . No Repair the (K124) ETC Motor (+) for excessive resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. EXCESSIVE RESISTANCE IN THE (K126) ETC MOTOR (-) CIRCUIT Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K126) ETC Motor (-) circuit at the Throttle Body harness connector and by probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 7 . No Repair the (K126) ETC Motor (-) for excessive resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
7. THROTTLE BODY Turn the ignition off. Disconnect special tool #8815-1 from the C2 PCM harness connector. NOTE: Use special tool #8815 to avoid possible damage to the Throttle Body harness connector. Measure the resistance of the ETC Motor by probing the appropriate terminals of special tool #8815 for the (K124) ETC Motor (+) circuit and the (K126) ETC Motor (-) circuit. Is the resistance between 2.5 and 25 ohms at closed throttle? Yes Go to 8 . No Replace the Throttle Body. Disconnect the battery when replacing the Throttle Body. After installation is complete, use a scan tool and perform the ETC RELEARN function. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
8. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for Grand Caravan.

SYSTEM WIRING DIAGRAMS for Town & Country.

Spark adjustment during a cold start is intended to provide quick response to idle speed variations. The PCM monitors spark advance on a cold start over a period of time, then compares the average spark advance to a threshold.

1. When Monitored: During a cold start condition, with the difference between the AAT and ECT at startup below 10° C (50° F), and the engine running at idle.

1. Set Condition: The PCM detects that engine speed is 50 RPM or more (depending on vehicle specifications) below target idle speed for more than 3 seconds, and the average spark advance is above the failure threshold for more than the specified limit. Two trip fault. Three good trips to turn off the MIL.

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding.

1. ACTIVE DTC NOTE: Low battery voltage can cause excessive current draw in very hot and very cold ambient temperatures. Look closely at the temperatures at which this DTC set and make sure the battery can pass a load test before continuing. NOTE: Diagnose and repair any other DTCs set in the PCM before proceeding with this test. Turn the ignition on. With the scan tool, select View DTCs and review the DTC environmental information. Is the good trip counter greater than 0? Yes The DTC is not active at this time. Refer to the «*CHECKING FOR AN INTERMITTENT DTC»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#dtcs-u1417-to-u1418-checking-no-crank-and-no-start-condition-intermittent-dtc-component-checks-system-checks-checking-po) Diagnostic Procedure. No Go to 2 .
2. THROTTLE PLATE INSPECTION Turn the ignition off. Remove the air cleaner assembly. Check for any signs of a foreign material (ice, dirt, or excessive carbon build up) on the throttle plate or in the bore causing the throttle plate to stick. Were any problems found? Yes Remove the debris if possible or replace the Throttle Body. Disconnect the battery when replacing the Throttle Body. After installation is complete, use a scan tool and perform the ETC RELEARN function. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 3 .
3. DIRTY AIR FILTER Remove and inspect the air filter. Were any problems found? Yes Replace the air filter. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Go to 4 .
4. CONTAMINATED FUEL Inspect the fuel for contamination. (dirt, water, or other foreign material) Were any problems found? Yes Drain the fuel from the fuel tank into an approved gas holding tank and add clean fuel. Refer to «STANDARD PROCEDURE»(/chrysler/town-country/v-2007-2010/remont/fuel-system/#fuel-system) . No Go to 5 .
5. EXCESSIVE RESISTANCE IN THE (K124) ETC MOTOR (+) CIRCUIT Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K124) ETC Motor (+) circuit at the Throttle Body harness connector and by probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 6 . No Repair the (K124) ETC Motor (+) for excessive resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
6. EXCESSIVE RESISTANCE IN THE (K126) ETC MOTOR (-) CIRCUIT Turn the ignition off. 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 along with the #8815-1 to perform the diagnosis. Using a voltmeter, perform a voltage drop test by backprobing the (K126) ETC Motor (-) circuit at the Throttle Body harness connector and by probing the appropriate terminal of the special tool #8815. Make sure the voltmeter leads are connected so that positive polarity is displayed on the voltmeter. WARNING: 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. Is the voltage below 0.5 volts? Yes Go to 7 . No Repair the (K126) ETC Motor (-) for excessive resistance. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
7. THROTTLE BODY Turn the ignition off. Disconnect special tool #8815-1 from the C2 PCM harness connector. NOTE: Use special tool #8815 to avoid possible damage to the Throttle Body harness connector. Measure the resistance of the ETC Motor by probing the appropriate terminals of special tool #8815 for the (K124) ETC Motor (+) circuit and the (K126) ETC Motor (-) circuit. Is the resistance between 2.5 and 25 ohms at closed throttle? Yes Go to 8 . No Replace the Throttle Body. Disconnect the battery when replacing the Throttle Body. After installation is complete, use a scan tool and perform the ETC RELEARN function. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .
8. POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) . No Replace the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «PCM VERIFICATION TEST»(/chrysler/town-country/v-2007-2010/remont/testing-diagnostics/#powertrain-control-modules-pcm-electrical-diagnosis__pcm-verification-test) .

See also:
• PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE
• *CHECKING FOR AN INTERMITTENT DTC
• PCM VERIFICATION TEST
• BODY VERIFICATION TEST VER-1
• STANDARD PROCEDURE
• P0455-EVAP SYSTEM LARGE LEAK