Dodge Ram Truck 1500-2500-3500. Manual — part 1243

P0463-FUEL LEVEL SENSOR 1 CIRCUIT HIGH (CONTINUED)

4.

(N4) FUEL LEVEL SIGNAL CIRCUIT OPEN

Turn the ignition off.

Measure the resistance of the (N4) Fuel Level Signal circuit from the
Fuel Pump Module harness connector to the PCM harness connector.

Is the resistance below 5.0 ohms?

Yes

>> Go To 5

No

>> Repair the open in the (N4) Fuel Level Signal circuit.

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

5.

(K900) SENSOR GROUND CIRCUIT OPEN

Measure the resistance of the (K900) Sensor Ground circuit from the
Fuel Pump Module harness connector to the PCM harness connector.

Is the resistance below 5.0 ohms?

Yes

>> Go To 6

No

>> Repair the open in the (K900) Sensor Ground circuit.

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

9 - 1894

ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10

DR/DH

P0463-FUEL LEVEL SENSOR 1 CIRCUIT HIGH (CONTINUED)

6.

PCM

NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal
push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and
Ground circuits.

Were there any problems found?

Yes

>> Repair as necessary.

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

No

>> Replace and program the Powertrain Control Module per Service Information.

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

DR/DH

ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10

9 - 1895

P0500-NO VEHICLE SPEED SIGNAL

9 - 1896

ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10

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P0500-NO VEHICLE SPEED SIGNAL (CONTINUED)

For the Engine circuit diagram (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES/ENGINE CON-
TROL MODULE - SCHEMATIC - ELECTRICAL)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:
Engine Temperature greater than 104 Deg F, MAP vacuum approximately 15

9

to 16

9

inches of mercury and

Engine RPM between 1400 and 3000 rpm.

•

Set Condition:
No Vehicle Speed Signal for more than 15 seconds on two consecutive trips.

Possible Causes

(B22) VEHICLE SPEED SIGNAL CIRCUIT SHORTED TO VOLTAGE

(B22) VEHICLE SPEED SIGNAL CIRCUIT OPEN BETWEEN CAB AND PCM

(B22) VEHICLE SPEED SIGNAL CIRCUIT SHORTED TO GROUND

PCM

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

1.

GOOD TRIP EQUAL TO ZERO

Ignition on, engine not running.

NOTE: With the scan tool check for any related DTCs that may be present in the ABS/RWAL Module or TCM,
diagnose any ABS/RWAL Module DTC’s before continuing.
With the scan tool, read DTCs and record the related Freeze Frame data.

Is the Good Trip Counter displayed and equal to zero?

Yes

>> Go To 2

No

>> Refer to the INTERMITTENT CONDTION Diagnostic Procedure.

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

2.

(B22) VEHICLE SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

Turn the ignition off.

Disconnect the PCM harness connectors.

Disconnect the CAB Module harness connector.

Ignition on, engine not running.

Measure the voltage of the (B22) Vehicle Speed Signal circuit in the
CAB Module or PCM harness connector.

Is the voltage above 4.9 volts?

Yes

>> Repair the short to voltage in the (B22) Vehicle Speed Sig-

nal circuit between the CAB and PCM.

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

No

>> Go To 3

DR/DH

ENGINE - ELECTRICAL DIAGNOSTICS - SRT-10

9 - 1897