Diagnostic Test

1) RADIATOR COOLING FAN MODULE OPERATION
Ignition on, engine not running.

With a scan tool, actuate both the Radiator Cooling Fan Relays #1 and #2.

Are both cooling fan operating at medium speed?

Yes
1. Refer to the *CHECKING FOR AN INTERMITTENT CONDITION Diagnostic Procedure.
2. Perform PCM VERIFICATION TEST .
No
1. Go To 2).
2) (A16) FUSED B+ CIRCUIT

Fig 1: Checking (A16) Fused B+ Circuit At Both The Med/High Radiator Fan Relay And Series/Parallel Radiator Fan Relay Connectors
Courtesy of CHRYSLER LLC

Ignition on.

Disconnect the Med/High Rad Fan Relay from the Fuse/Relay Block.

Disconnect the Series/Parallel Rad Fan Relay from the Fuse/Relay Block.

Using a 12-volt test light connected to ground, probe the (A16) Fused B+ circuit at both the Med/High Rad Fan Relay and the Series/Parallel Rad Fan Relay connectors.

Does the test light illuminate brightly at each terminal?

Yes
1. Go To 3).
No
1. Repair the (A16) Fused B+ circuit. Inspect the related fuse and repair as necessary.
2. Perform PCM VERIFICATION TEST .
3) MED/HIGH RAD FAN RELAY

Fig 2: Checking (N112) Radiator Fan Relay Control Circuit At Med/High Radiator Fan Relay
Courtesy of CHRYSLER LLC

Install the Series/Parallel Rad Fan Relay.

Turn the ignition on, engine not running.

With a scan tool, select Radiator Cooling Fan Relay #2 Control State, Toggle, to actuate the Cooling Fan (Med/High Rad Fan Relay).

Using a 12-volt test light connected to battery voltage, probe the (N112) Rad Fan Relay Control circuit at the Med/High Rad Fan Relay.

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

Yes
1. Replace the Med/High Rad Fan Relay.
2. Perform PCM VERIFICATION TEST .
No
1. Go To 4).
4) SERIES/PARALLEL RAD FAN RELAY)

Fig 3: Probing The (N112) Radiator Fan Relay Control Circuit At The Series/Parallel Radiator Fan Relay
Courtesy of CHRYSLER LLC

Remove the Series/Parallel Rad Fan Relay.

Install the Med/High Rad Fan Relay.

Turn the ignition on, engine not running.

With a scan tool, select Radiator Cooling Fan Relay #2 Control State, Toggle, to actuate the Cooling Fan (Series/Parallel Rad Fan Relay).

Using a 12-volt test light connected to battery voltage, probe the (N112) Rad Fan Relay Control circuit at the Series/Parallel Rad Fan Relay.

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

Yes
1. Replace the Series/Parallel Rad Fan Relay.
2. Perform PCM VERIFICATION TEST .
No
1. Go To 5).
5) (N112) RAD FAN RELAY CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE

Fig 4: Measuring Voltage Of (N112) Radiator Fan Relay Control Circuit In Med/High Radiator Fan Relay Harness Connector
Courtesy of CHRYSLER LLC

Disconnect the TIPM C11 harness connector.

Using a voltmeter, measure the voltage of the (N112) Rad Fan Relay Control circuit in the Med/High Rad Fan Relay harness connector.

Is there voltage present?

Yes
1. Repair the short to voltage in the (N112) Rad Fan Relay Control circuit.
2. Perform PCM VERIFICATION TEST .
No
1. Go To 6).
6) (N112) RAD FAN RELAY CONTROL CIRCUIT OPEN

Fig 5: Checking Rad Fan Relay Control Circuit For Open
Courtesy of CHRYSLER LLC

Measure the resistance of the (N112) Rad Fan Relay Control circuit from the Med/High Rad Fan Relay harness connector to the TIPM C11 harness connector.

Is the resistance below 5.0 ohms?

Yes
1. Go To 7).
No
1. Repair the open in the (N112) Rad Fan Relay Control circuit.
2. Perform PCM VERIFICATION TEST .
7) (N112) RAD FAN RELAY CONTROL CIRCUIT SHORTED TO GROUND

Fig 6: Measuring Resistance Between Ground And (N112) Radiator Fan Relay Control Circuit In TIPM C11 Harness Connector
Courtesy of CHRYSLER LLC

Measure the resistance between ground and the (N112) Rad Fan Relay Control circuit in the TIPM C11 harness connector.

Is the resistance below 100 ohms?

Yes
1. Repair the short to ground in the (N112) Rad Fan Relay Control circuit.
2. Perform PCM VERIFICATION TEST .
No
1. Replace the Totally Integrated Power Module in accordance with the Service Information.
2. Perform PCM VERIFICATION TEST .