Ford 2003 Mustang Workshop Manual page 3532

(LB/WH), harness side and RCM C2041 Pin 5, Circuit 70
(LB/WH), harness side.
Is the resistance less than 5 ohms?
PINPOINT TEST D: THE MODULE DOES NOT RESPOND TO THE
DIAGNOSTIC TOOL — INSTRUMENT CLUSTER
D1 CHECK INSTRUMENT CLUSTER C220a FOR DAMAGE
Key in OFF position.
Disconnect: Instrument Cluster C220a.
Inspect instrument cluster C220a for damage; repair as
necessary.
Connect: Instrument Cluster C220a.
Connect the diagnostic tool.
Key in ON position.
Enter the following diagnostic mode on the diagnostic
tool: Diagnostic Data Link.
Was the result received ICM: NO RESPONSE ON
CKT914 (BUS+)?
D2 CHECK FOR OPEN BETWEEN DLC C251 PIN 2 AND
INSTRUMENT CLUSTER C220a PIN 1 — CIRCUIT 914
(TN/OG)
Key in OFF position.
Disconnect the diagnostic tool.
Disconnect: Instrument Cluster C220a.
Measure the resistance between instrument cluster
C220a Pin 1, Circuit 914 (TN/OG), harness side and
DLC C251 Pin 2, Circuit 914 (TN/OG), harness side.
Is the resistance less than 5 ohms?
D3 CHECK FOR OPEN BETWEEN DLC C251 PIN 10 AND
INSTRUMENT CLUSTER C220a PIN 2 — CIRCUIT 915
(PK/LB)
Key in OFF position.
Test Step
REPAIR Circuit 70
(LB/WH) between RCM
C2041 and DLC C251 .
TEST the system for
normal operation.
Result / Action to Take
Yes
GO to D2 .
No
GO to D3 .
Yes
INSTALL a new instrument
cluster. For additional
information, REFER to
413-01 . TEST the system for
normal operation.
No
REPAIR Circuit 914 (TN/OG)
between instrument cluster
C220a and DLC C251. For
additional information, REFER
to Communication Circuit Wiring
Repair . TEST the system for
normal operation.
Yes
Section