Dodge Neon / Neon SRT-4. Manual — part 601

TEST

ACTION

APPLICABILITY

3

Turn the ignition off.
Remove the Low Speed Rad Fan Relay #1 from the PDC.
Disconnect the Rad Fan #2 harness connector.
Measure the resistance between ground and the Low Speed Rad Fan Relay Output
circuit at the Low Speed Rad Fan Relay #1 connector in the PDC.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the short to ground in the Low Speed Rad Fan Output

circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 4

4

Turn the ignition off.
Remove the Rad Fan Control Relay #3 from the PDC.
Disconnect the Rad Fan #2 harness connector.
Measure the resistance between ground and the Low Speed Rad Fan Relay Output
circuit at the Rad Fan Control Relay #3 connector in the PDC terminal
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the short to ground in the Low Speed Rad Fan Output

circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 5

5

NOTE: All relays and connectors reconnected.
Turn the ignition on.
With the DRBIII

t, actuate the Low Speed Rad Relay.

WARNING: Keep hands away from the Rad Fan when it is operating.
Disconnect the Rad Fan #1 harness connector.
Is the Fan #2 still operating?

All

Yes

→ Repair the Low Speed Rad Fan Output circuit for a short to

ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Replace the Rad Fan Assembly.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

6

Remove the Low Speed Relay #1 from the PDC.
Using a 12-volt test light connected to ground, probe the Fused B+ circuit in the PDC.
Does the test light illuminate brightly?

All

Yes

→ Go To 7

No

→ Repair the open in the Fused B+ circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

7

Turn the ignition off.
Install a substitute relay in place of Radiator Fan Relay No. 1.
Turn the ignition on.
With the DRB, actuate the Low Speed Rad Fan Relay.
NOTE: Repeat the test above if the Rad Fans did not operate.
Did the Rad Fan operate normally when the relay(s) were substituted?

All

Yes

→ Replace the Radiator Fan Relay that allowed the Fans to operate

normally.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Go To 8

309

DRIVEABILITY - NGC

*CHECKING RAD FAN LOW SPEED OPERATION (TURBO) —

Continued

TEST

ACTION

APPLICABILITY

8

Turn the ignition off.
Disconnect the Rad Fan #1 harness connector.
Measure the resistance of the ground circuit in the Rad Fan #1 harness connector to
ground.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 9

No

→ Repair the open in the Ground circuit.

Perform POWERTRAIN VERIFICATION TEST VER - 5.

9

Remove the Rad Fan Relay #3 from the PDC.
Turn the ignition on.
With the DRBIII

t, actuate the Low Speed Rad Fan Relay#1.

Using a fused jumper wire connected to ground, probe the Low Speed Rad Relay
Output in the Rad Fan Control Relay #3.
Does the Rad Fan #2 operate?

All

Yes

→ Check for an open between the Relay #3 and the Rad Fan #1 in

the Relay Output circuit. If OK, replace the Rad Fan Assembly.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

No

→ Check for an open between the Relay #2 and Relay #3 in the Relay

Output circuit. If OK, replace the Rad Fan Assembly.
Perform POWERTRAIN VERIFICATION TEST VER - 5.

310

DRIVEABILITY - NGC

*CHECKING RAD FAN LOW SPEED OPERATION (TURBO) —

Continued

Symptom:

*CHECKING RADIATOR FAN RELAY OUTPUT

POSSIBLE CAUSES

RADIATOR FAN RELAY OPERATION

GROUND CIRCUIT OPEN

RADIATOR FAN MOTOR

FUSED B+ CIRCUIT

RADIATOR FAN RELAY OUTPUT CIRCUIT

RADIATOR FAN RELAY

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, actuate the Radiator Fan Relay.

Is the Radiator Fan actuating?

All

Yes

→ The Radiator Fan System operating properly at this time.

Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

No

→ Go To 2

2

Turn the ignition off.
Disconnect the Radiator Fan harness connector.
Measure the resistance between the Ground circuit in the Radiator Fan harness
connector to ground.
Is the resistance below 5.0 ohms?

All

Yes

→ Go To 3

No

→ Repair the Ground circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

3

Disconnect the Radiator Fan harness connector.
Turn the ignition on.
With the DRBIII

t, actuate the Radiator Fan Relay.

Measure the voltage of the Radiator Fan Relay Output circuit in the Radiator Fan
harness connector.
Is the voltage above 11.0 volts?

All

Yes

→ Replace the Radiator Fan Motor.

Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

No

→ Go To 4

4

Turn the ignition off.
Remove the Radiator Fan Relay from the PDC.
Using a 12-volt test light connected to ground, probe the Fused B+ circuit in the PDC.
Does the test light illuminate brightly?

All

Yes

→ Go To 5

No

→ Repair the Fused B+ circuit. Inspect fuses and replace as neces-

sary.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

311

DRIVEABILITY - NGC

TEST

ACTION

APPLICABILITY

5

Turn the ignition off.
Remove the Radiator Fan Relay from the PDC.
Disconnect the Radiator Fan harness connector.
Measure the resistance of the Radiator Fan Relay Output circuit between the PDC
and the Radiator Fan harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Replace the Radiator Fan Relay.

Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

No

→ Repair the Radiator Fan Relay Output circuit for an open.

Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.

312

DRIVEABILITY - NGC

*CHECKING RADIATOR FAN RELAY OUTPUT —

Continued