Dodge Ram Truck 1500-2500-3500. Manual — part 880

P0403-EGR SOLENOID CIRCUIT

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ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L

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P0403-EGR SOLENOID CIRCUIT (CONTINUED)

For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS).

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Engine running. Battery voltage greater than 10 volts.

•

Set Condition:
The EGR solenoid control circuit is not in the expected state when requested to operate by the PCM. One Trip
Fault.

Possible Causes

(Z335) EGR SOLENOID GROUND CIRCUIT OPEN

(K35) EGR SOLENOID CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE

(K35) EGR SOLENOID CONTROL CIRCUIT SHORTED TO GROUND

(K35) EGR SOLENOID CONTROL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT

(K35) EGR SOLENOID CONTROL CIRCUIT OPEN

EGR SOLENOID ASSEMBLY

PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING).

Diagnostic Test

1.

ACTIVE DTC

Ignition on, engine not running.

With a scan tool, read DTCs.

Is the DTC active at this time?

Yes

>> Go To 2

No

>> Refer to the INTERMITTENT CONDITION Diagnostic Procedure.

Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

2.

EGR SOLENOID ASSEMBLY

Turn the ignition off.

Disconnect the EGR Solenoid harness connector.

Ignition on, engine not running.

Turn off all accessories.

Using a 12-volt test light connected to the (Z335) EGR Solenoid
ground circuit, probe the (K34) EGR Solenoid Control circuit.

With a scan tool, actuate the EGR solenoid.

Does the 12-volt test light flash on and off?

Yes

>> Replace the EGR Solenoid Assembly.

Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)

No

>> Go To 3

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ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L

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P0403-EGR SOLENOID CIRCUIT (CONTINUED)

3.

(Z335) EGR SOLENOID GROUND CIRCUIT OPEN

Turn the ignition off.

Using a 12-volt test light connected to the 12-volts, probe the (Z335)
EGR Solenoid ground circuit in the EGR Solenoid harness connector.

Does the test light illuminate brightly?

Yes

>> Go To 4

No

>> Repair the open in the (Z335) EGR Solenoid ground cir-

cuit.

Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)

4.

(K35) EGR SOLENOID CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE

Ignition on, engine not running.

Disconnect the C2 PCM harness connector.

Measure the voltage on the (K35) EGR Solenoid Control circuit in the
EGR Solenoid connector.

Is the voltage above 1.0 volt?

Yes

>> Repair the short to battery voltage in the (K35) EGR Sole-

noid Control circuit.

Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)

No

>> Go To 5

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ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L

DR/DH

P0403-EGR SOLENOID CIRCUIT (CONTINUED)

5.

(K35) EGR SOLENOID CONTROL CIRCUIT SHORTED TO GROUND

Turn the ignition off.

Measure the resistance between ground and the (K35) EGR Solenoid
Control circuit in the EGR Solenoid harness connector.

Is the resistance below 100 ohms?

Yes

>> Repair the short to ground in the (K35) EGR Solenoid

Control circuit.

Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)

No

>> Go To 6

6.

(K35) EGR SOLENOID CONTROL CIRCUIT SHORTED TO THE (K900) SENSOR GROUND CIRCUIT

Measure the resistance between the (K35) EGR Solenoid Control cir-
cuit and the (K900) Sensor ground circuit in the EGR Solenoid con-
nector.

Is the resistance below 5.0 ohms?

Yes

>> Repair the short between the (K900) Sensor ground circuit

and the (K35) EGR Solenoid Control circuit.

Perform the POWERTRAIN VERIFICATION TEST. (Refer
to 9 - ENGINE - STANDARD PROCEDURE)

No

>> Go To 7

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ENGINE - ELECTRICAL DIAGNOSTICS - 3.7L/4.7L/5.7L

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