Pinpoint Test S: The Speed Control Indicator Is Never/Always On - Ford Mustang 2005 Workshop Manual

2005 Mustang Workshop Manual
Ignition ON.
Does the air bag warning indicator illuminate?
R6 CHECK CIRCUIT 608 (BK/YE) FOR A SHORT TO GROUND
Ignition OFF.
Disconnect: Instrument Cluster C220.
Measure the resistance between the instrument cluster C220-24, circuit 608 (BK/YE),
harness side and ground.
Is the resistance greater than 10,000 ohms?
R7 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
Disconnect the instrument cluster connector.
Check for:
corrosion
pushed-out pins
Connect the instrument cluster connector and make sure it seats correctly.
Operate the system and verify the concern is still present.
Is the concern still present?
R8 CHECK FOR CORRECT RCM OPERATION
Disconnect all the RCM connectors.
Check for:
corrosion
pushed-out pins
Connect all the RCM connectors and make sure they seat correctly.
Operate the system and verify the concern is still present.
Is the concern still present?

Pinpoint Test S: The Speed Control Indicator Is Never/Always On

Normal Operation
The speed control status information is sent to the instrument cluster from the powertrain control module (PCM) over the communication network.
Possible Causes
PCM
instrument cluster
PINPOINT TEST S: THE SPEED CONTROL INDICATOR IS NEVER/ALWAYS ON
S1 CHECK THE SPEED CONTROL OPERATION
Test drive the vehicle and operate the speed control.
Does the speed control operate correctly?
S2 CARRY OUT THE INSTRUMENT CLUSTER SPEED CONTROL ACTIVE COMMAND USING
THE DIAGNOSTIC TOOL
Ignition ON.
Enter the following diagnostic mode on the scan tool: Instrument Cluster Active Command.
Select the instrument cluster warning lamps and chime active command. Trigger the all lamps
active command on and off. Observe the speed control indicator.
Does the speed control indicator illuminate when triggered on and turn off when
triggered off?
S3 CHECK FOR CORRECT POWERTRAIN CONTROL MODULE (PCM) OPERATION
Disconnect all the PCM connectors.
Check for:
corrosion
pushed-out pins
Connect all the PCM connectors and make sure they seat correctly.
Operate the system and verify the concern is still present.
Is the concern still present?
S4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
Disconnect the instrument cluster connector.
Check for:
corrosion
pushed-out pins
Connect the instrument cluster connector and make sure it seats correctly.
Operate the system and verify the concern is still present.
Is the concern still present?
Pinpoint Test T: The Powertrain Malfunction (Wrench) Warning Indicator is Never/Always On
http://www.fordtechservice.dealerconnection.com/pubs/content/...
Test Step
GO to R6.
Yes
GO to R7.
No
REPAIR the circuit. ACTIVATE the SRS. REFER to
the system for normal operation.
Yes
INSTALL a new instrument cluster. REFER to
section. ACTIVATE the SRS. Refer to Section
for normal operation.
No
The system is operating correctly at this time. The concern may have been
caused by a loose or corroded connector. ACTIVATE the SRS. REFER to
Section 501-20B.
Yes
INSTALL a new RCM and ACTIVATE the SRS. REFER to
TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been
caused by a loose or corroded connector. ACTIVATE the SRS. REFER to
Section 501-20B.
Result / Action to Take
Yes
GO to S2.
No
REFER to Section 310-03 to continue diagnosis of the speed control
system.
Yes
GO to S3.
No
GO to S4.
Yes
INSTALL a new PCM. REFER to Section 303-14. TEST the system for
normal operation.
No
The system is operating correctly at this time. The concern may have
been caused by a loose or corroded connector.
Yes
INSTALL a new instrument cluster. REFER to
this section. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have
been caused by a loose or corroded connector.
Page 31 of 40
Section 501-20B. TEST
Instrument Cluster (IC) in this
501-20B. TEST the system
Section 501-20B.
Instrument Cluster (IC) in
11/14/2009