The Daytime Running Lamps (Drl) Indicator Is Never/Always On; Pinpoint Test Y: The Instrument Cluster Is Inoperative - Ford Mustang 2005 Workshop Manual

2005 Mustang Workshop Manual
triggered off?
W2 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?
W3 CHECK FOR CORRECT ANTI-LOCK BRAKE SYSTEM (ABS) MODULE OPERATION
Disconnect the ABS module connector.
Check for:
corrosion
pushed-out pins
Connect the ABS module connector and make sure it seats correctly.
Operate the system and verify the concern is still present.
Is the concern still present?
Pinpoint Test X: The Daytime Running Lamps (DRL) Indicator Is Never/Always On
Normal Operation
When the DRL is on, the smart junction box (SJB) sends a message over the communication network to the instrument cluster, illuminating the DRL indicator.
Possible Causes
SJB
instrument cluster
PINPOINT TEST X: THE DAYTIME RUNNING LAMPS (DRL) INDICATOR IS NEVER/ALWAYS ON
X1 CHECK THE DRL OPERATION
Check the operation of the DRL.
Does the DRL operate correctly?
X2 CARRY OUT THE INSTRUMENT CLUSTER WARNING LAMPS AND CHIME 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 DRL indicator.
Does the DRL indicator illuminate when triggered on and turn off when triggered off?
X3 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?
X4 CHECK FOR CORRECT SMART JUNCTION BOX (SJB) OPERATION
Disconnect all the SJB connectors.
Check for:
corrosion
pushed-out pins
Connect all the SJB connectors and make sure they seat correctly.
Operate the system and verify the concern is still present.
Is the concern still present?

Pinpoint Test Y: The Instrument Cluster Is Inoperative

Normal Operation
The instrument cluster communicates interactively with other electronic modules using the communication network. With the ignition switch in the START/RUN position, the instrument
cluster receives voltage from the smart junction box (SJB) fuse 16 (5A), circuit 489 (PK/BK), and SJB fuse 19 (5A) circuit 1266 (RD/YE). With the ignition switch in the OFF position, the
instrument cluster receives its keep-alive voltage from the SJB fuse 8 (10A), circuit 1001 (WH/YE). The instrument cluster is grounded through circuit 1205 (BK).
Possible Causes
circuit 489 (PK/BK) open
circuit 1001 (WH/YE) open
circuit 1205 (BK) open
circuit 1266 (RD/YE) open
instrument cluster
PINPOINT TEST Y: THE INSTRUMENT CLUSTER IS INOPERATIVE
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Test Step
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.
Yes
INSTALL a new ABS module. REFER to Section
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.
Result / Action to Take
Yes
GO to X2.
No
REFER to Section 417-01 to continue diagnosis of the DRL.
Yes
GO to X4.
No
GO to X3.
Yes
INSTALL a new instrument cluster. REFER to
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.
Yes
INSTALL a new SJB. REFER to Section 419-10. 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.
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Instrument Cluster (IC) in
206-09. TEST the
Instrument Cluster (IC) in this
11/14/2009