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303-06-4 303-06-4Starting System
DIAGNOSIS AND TESTING (Continued)
Possible Causes
When the starter relay is energized, voltage supplied
to the relay switch is sent to the starter motor
• Fuse(s)
solenoid through circuit 113 (YE/LB). Battery
• An open in battery voltage feed BEC, 2037 (RD)
voltage is supplied to the starter motor through
or 113 (YE/LB)
circuit 2037 (RD) at all times.
• Starter motor relay
• Starter
PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICK
Test Step Result / Action to Take
A1 CHECK THE BATTERY
• Check the battery condition and charge if necessary. Refer to
Yes
Section 414-01. GO to A2.
• Is the battery OK?
No
CHARGE or INSTALL a new battery as
necessary. REFER to Section 414-01.
TEST the system for normal operation.
A2 CHECK FOR PATS DTCS
• NOTE: The PATS DTCs are the only DTCs of concern in this
Yes
step. Only repair retrieved non-PATS DTCs if a customer GO to Section 419-01B to diagnose the
concern is reported. PATS DTCs.
Check for PATS DTCs.
No
• Were any PATS DTCs retrieved?
GO to A3.
A3 CHECK CIRCUIT 33 (WH/PK) (CIRCUIT 32 [RD/LB] MANUAL
TRANSMISSION ONLY) FOR VOLTAGE
• Disconnect: Starter Motor Relay.
• Key in START position.
• If equipped, fully depress the clutch pedal.
(Continued)
2005 Mustang, 12/2004