Chrysler New Yorker. Manual — part 679

TEST SC-5A

CHECKING FOR A SPEED CONTROL DENIED MESSAGE

Perform TEST SC-1A Before Proceeding

NOTES

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TEST SC-5A

CHECKING FOR A SPEED CONTROL DENIED MESSAGE

Perform TEST SC-1A Before Proceeding

At this time the speed control switch and servo functions appear to operate properly. Using the DRB,
monitor the speed control ‘‘output’’ status. Road test the vehicle at speeds over 55 kmh (35 mph) and
attempt to set the speed control. The following items will not allow the speed control to set. The last
or most recent cause for speed control not to set is indicated by the ‘‘Denied’’ status.

Denied Message

ON/OFF

The powertrain control module does not see an ‘‘ON’’ signal from the switch
at cavity 41.

SPEED

The vehicle speed as seen by the powertrain control module at cavity 66 is
not greater than 50 kmh (30 mph).

RPM

The engine rpm is excessive high.

BRAKE

The brake switch sense circuit is open indicating to the powertrain control
module that the brakes are applied. The sense circuit, cavity 62 of the PCM,
is grounded through the brake pedal switch when the brakes are released.

P/N

The park/neutral switch sense circuit is grounded indicating to the powertrain
control module that the transmission is not in gear. The sense circuit, cavity
76 of the PCM, is grounded through the Transmission Range Sensor when
the transmission is in park or neutral.

RPM/SPD

The PCM senses excessive engine rpm for a given vehicle speed.

SOL FLT

The powertrain control module senses a servo solenoid circuit trouble code
that is maturing or set in memory.

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TEST CH-1A

CHARGING SYSTEM NO CODE TEST

Perform TEST DTC Before Proceeding

2.7L

FIG. 1

3.5L

FIG. 2

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TEST CH-1A

CHARGING SYSTEM NO CODE TEST

Perform TEST DTC Before Proceeding

*Perform Verification TEST VER-3A.

**Check connectors - Clean / repair as necessary.

START TEST BATTERY CONDITION

CH-1A.

MUST BE VERIFIED

PRIOR TO THIS TEST

INSPECT THE

GENERATOR BELT

IS THE GENERATOR

NO

REPAIR AS

TENSION AND

BELT OK?

NECESSARY.*

CONDITION.

YES

START ENGINE. WITH WITH

THE DRB,

THE DRB, SET THE

RETURN THE ENGINE

ARE THERE ANY

YES

PERFORM

ENGINE SPEED TO

TO IDLE SPEED AND

CHARGING SYSTEM

DTC TEST

1600 RPM FOR 30

READ CODES.

TROUBLE CODES?

SECONDS.

NO

BACKPROBE THE

TURN IGNITION ON.

WITH THE DRB,

USE A VOLTMETER IN

GENERATOR FIELD DR

(ENGINE OFF)

ACTUATE THE

THE FOLLOWING

TERMINAL AT THE

GENERATOR FIELD.

STEPS.

BACK OF THE

GENERATOR. FIG. 1

NOTE: THE VOLTAGE

WHILE MONITORING THE

WAS THERE ANY

REPAIR THE WIRE

SHOULD CYCLE FROM

DRB, WIGGLE THE

INTERRUPTION IN

YES

WHERE WIGGLING

LOW TO HIGH AT THE

FIELD TERMINALS BACK

THE NORMAL CYCLE

INTERRUPTED THE

GEN FIELD DRIVER TO

THE PCM AND ASD

BETWEEN LOW AND

VOLTAGE CYCLE.*

TERMINAL.

RELAY. HIGH

VOLTAGE?

NO

WITH THE DRB, READ

ARE THERE ANY

YES

PERFORM

TROUBLE CODES. CHARGING

SYSTEM

DTC TEST.

TROUBLE CODES?

NO

CONTINUE TEST

CH-1A ON THE

NEXT PAGE.

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