Ford ST1137-A, Manual

Page: 38 / 43

413-01-38 413-01-38 Instrument Cluster
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST U: THE TRACTION CONTROL INDICATOR IS NEVER/ALWAYS ON
Test Step Result / Action to Take
U1 DETERMINE IF THE TRACTION CONTROL INDICATOR IS
ALWAYS ON
• Observe the traction control indicator.
Yes
• Is the indicator always on? REFER to Section 206-09B.
No
GO to U2 .
U2 DETERMINE IF THE INSTRUMENT CLUSTER IS AT FAULT
• Connect the scan tool.
• Key in ON position.
Yes
• Enter the following diagnostic mode on the scan tool: Instrument
REFER to Section 206-09B.
Cluster Active Command.
• Trigger the instrument cluster active command TRAC OFF.
No
• Did the traction control indicator illuminate? GO to U3 .
U3 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
• Disconnect all the instrument cluster connectors.
Yes
• Check for: INSTALL a new instrument cluster.
REFER to Instrument Cluster in this
• corrosion
section. TEST the system for normal
• pushed-out pins
operation.
• Connect all the instrument cluster connectors and make sure
they seat correctly.
No
• Operate the system and verify the concern is still present. The system is operating correctly at this
• Is the concern still present? time. The concern may have been caused
by a loose or corroded connector. CLEAR
the DTCs. REPEAT the self-test.
PINPOINT TEST V: THE INSTRUMENT CLUSTER IS INOPERATIVE
Test Step Result / Action to Take
V1 CHECK THE BATTERY POWER SUPPLY TO THE INSTRUMENT
CLUSTER
CAUTION: Use the correct probe adapter(s) when
making measurements. Failure to use the correct probe
adapter(s) may damage the connector.
• Key in OFF position.
• Disconnect: Instrument Cluster C220b.
• Measure voltage between the instrument cluster C220b pin 10,
circuit 729 (RD/WH), harness side and ground.
Yes
GO to V2 .
No
REPAIR the circuit. TEST the system for
• Is the voltage greater than 10 volts? normal operation.
V2 CHECK THE RUN POWER SUPPLY TO THE INSTRUMENT
CLUSTER
• Key in ON position.
(Continued)
2003 Mustang, 8/2002