Dodge Ram Truck 1500-2500-3500. Manual — part 932

P0585-SPEED CONTROL SWITCH 1/2 CORRELATION (5.7L) (CONTINUED)

11.

S/C SWITCH SIGNAL CIRCUITS SHORTED TO GROUND

Measure the resistance between ground and the (V37) and (V38) S/C
Switch Signal circuits at both Switch harness connectors.

Is the resistance below 100 ohms?

Yes

>> Repair the short to ground in the (V37) or (V38) S/C

Switch Signal circuit.

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

No

>> Go To 12

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

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P0585-SPEED CONTROL SWITCH 1/2 CORRELATION (5.7L) (CONTINUED)

12.

SPEED CONTROL SWITCH VOLTAGE VALUES

Allow the engine to idle.

With a scan tool, monitor the S/C Switch voltage readings.

SWITCH POSITION

SWITCH No.1 VOLTAGE VALUE

SWITCH No.2 VOLATGE VALUE

NO SWITCHES PRESSED

4.31 to 4.78 volts

4.31 to 4.78 volts

ON/OFF PRESSED

0.59 to 1.13 volts

3.53 to 3.92 volts

RES/ACCEL PRESSED

3.88 to 4.17 volts

2.04 to 2.47 volts

SET PRESSED

3.16 to 3.56 volts

1.17 to 1.56 volts

COAST PRESSED

2.57 to 2.94 volts

0.77 to 1.09 volts

CANCEL PRESSED

1.59 to 1.99 volts

2.84 to 3.25 volts

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

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P0585-SPEED CONTROL SWITCH 1/2 CORRELATION (5.7L) (CONTINUED)

Take these same voltage measurements with a voltmeter by back probing the (V37) S/C Switch No.1 Signal circuit
and the (V38) S/C Switch No.2 Signal circuit at the switches.

Compare the voltage readings on the voltmeter to what the scan tool displayed.

Are the voltage readings out of the listed specification and is there less than a 0.2 of a volt difference
between the voltmeter switch values and the scan tool switch values?

Yes

>> Replace the Speed Control Switch.

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

No

>> Go To 13

13.

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)

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

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P0586-SPEED CONTROL VENT CONTROL CIRCUIT

DR/DH

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

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