Diagnostic Test

WARNING: This page is about a different car, the 2007 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

1) RADIATOR COOLING FAN MODULE OPERATION
NOTE: The DTC must not be active for the actuator test to operate properly, clear all DTC before continuing.

Ignition on, engine not running.

With a scan tool, select Radiator Cooling Fan Relay #1 Control State to actuate the Cooling Fan (Low Speed).

Is the Cooling Fan operating?

Yes
1. Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Refer to INTERMITTENT CONDITION .
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 2).
2) (A16) FUSED B+ CIRCUIT
Turn the ignition off.

Disconnect the Low Speed Rad Relay harness connector.

Using a 12-volt test light connected to ground, probe the (A16) Fused B+ circuit in the Low Speed Rad Relay harness connector.

Does the test light illuminate brightly?

Yes
1. Go to 3).
No
1. Repair the (A16) Fused B+ circuit. Inspect the related fuse and repair as necessary.
2. Perform POWERTRAIN VERIFICATION TEST .
3) LOW SPEED RAD FAN CONTROL CIRCUIT
Turn the ignition on, engine not running.

With a scan tool, select Radiator Cooling Fan Relay #1 Control State, Toggle, to actuate the Cooling Fan (Low Speed).

Using a 12-volt test light connected to battery voltage, probe the (N201) Low Speed Rad Fan Control circuit in the Low Speed Rad Relay harness connector.

Does the test light illuminate brightly and flash on and off?

Yes
1. Replace the Low Speed Rad Fan Relay.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 4).
4) (N201) LOW SPEED RAD FAN CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE
Disconnect the TIPM C11 harness connector.

Using a voltmeter, measure the voltage of the (N201) Low Speed Rad Fan Control circuit in the Low Speed Rad Relay harness connector.

Is there voltage present?

Yes
1. Repair the short to voltage in the (N201) Low Speed Rad Fan Control circuit
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Go to 5).
5) (N201) LOW SPEED RAD FAN CONTROL CIRCUIT OPEN
Measure the resistance of the (N201) Low Speed Fan Control circuit from the Low Speed Rad Relay harness connector to the TIPM C11 harness connector.

Is the resistance below 5.0 ohms?

Yes
1. Go to 6).
No
1. Repair the open in the (N201) Low Speed Fan Control circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
6) (N201) LOW SPEED RAD FAN CONTROL CIRCUIT SHORTED TO GROUND
Measure the resistance between ground and the (N201) Low Speed Fan Control circuit in the TIPM C11 harness connector.

Is the resistance below 100 ohms?

Yes
1. Repair the short to ground in the (N201) Low Speed Fan Control circuit.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Replace the Totally Integrated Power Module in accordance with the Service Information.
2. Perform POWERTRAIN VERIFICATION TEST .