Dodge Durango (HB). Manual — part 911

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

5.

S/C SWITCH SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE

Disconnect the C3 PCM harness connector.

Measure the voltage on the (V37) and (V38) S/C Switch Signal circuits
at both Speed Control harness connectors.

Is the voltage above 5.0 volts?

Yes

>> Repair the short to battery voltage in the (V37) or (V38)

S/C Switch Signal circuit.

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

No

>> Go To 6

HB

ENGINE ELECTRICAL DIAGNOSTICS

9 - 643

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

6.

CLOCKSPRING

Turn the ignition off.

Disconnect the C1 and C3 Clockspring harness connectors per Ser-
vice Information.

Measure the resistance of the (V37) and (V38) S/C Switch Signal cir-
cuits between the C1 and C3 Clockspring harness connectors.

Measure the resistance of the (V937) Switch Return circuit between
the C1 and C3 Clockspring harness connectors.

Is the resistance above 5.0 ohms?

Yes

>> Replace the Clockspring per Service Information.

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

No

>> Go To 7

NOTE: Connect the Clockspring harness connectors per Service
Information before continuing.

9 - 644

ENGINE ELECTRICAL DIAGNOSTICS

HB

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

7.

S/C SWITCH SIGNAL CIRCUIT OPEN

CAUTION: Do not probe the PCM harness connectors. Probing
the PCM harness connectors will damage the PCM terminals
resulting in poor terminal to pin connection. Install Miller Special
Tool #8815 to perform diagnosis.
Measure the resistance of the (V37) and (V38) S/C Switch Signal cir-
cuits from both Speed Control harness connectors to the appropriate
terminals of special tool #8815.

Is the resistance below 5.0 ohms for each measurement?

Yes

>> Go To 8

No

>> Repair the excessive resistance in the (V37) or (V38) S/C

Switch Signal circuit.

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

HB

ENGINE ELECTRICAL DIAGNOSTICS

9 - 645

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

8.

(V937) SWITCH RETURN CIRCUIT OPEN

NOTE: The measurement must be taken from both Speed Control
Switch harness connectors.
Measure the resistance of the (V937) Switch Return circuit from both
Speed Control harness connector to the appropriate terminal of special
tool #8815.

Is the resistance below 5.0 ohms for both measurements?

Yes

>> Go To 9

No

>> Repair the excessive resistance in the (V937) Switch

Return circuit.

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

9 - 646

ENGINE ELECTRICAL DIAGNOSTICS

HB