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303-06-11 303-06-11Starting System
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: THE ENGINE DOES NOT CRANK AND THE RELAY DOES NOT CLICK (Continued)
Test Step Result / Action to Take
A13 CHECK CIRCUIT 1419 (LG/YE) FOR AN OPEN (Continued)
• Measure the resistance between PCM C175B-2, circuit 1419
(LG/YE) and starter relay C1017-86, circuit 1419 (LG/YE).
Yes
INSTALL a new PCM. REFER to Section
303-14. TEST the system for normal
operation.
No
REPAIR circuit 1419 (LG/YE). TEST the
• Is the resistance less than 5 ohms? system for normal operation.
Pinpoint Test B: The Engine Does Not Crank
For manual transmission equipped vehicles, voltage
And The Relay Does Click
from the SJB is supplied to the clutch pedal position
switch (CPP) through circuit 32 (RD/LB). When the
Normal Operation
clutch pedal is depressed, voltage is supplied from
In normal operation, voltage from the bussed
the CPP to the starter relay coil located in the BEC
electrical center (BEC) is supplied to the ignition
through circuit 32 (RD/LB). The starter relay coil is
switch through circuit 1050 (LG/PK). When the
supplied ground from the PCM through circuit 1419
ignition switch is placed in the START position,
(LG/YE).
voltage is supplied through circuit 1522 (DG) to the
When the starter relay is energized, voltage supplied
smart junction box (SJB).
to the relay switch is sent to the starter motor
For automatic transmission equipped vehicles,
solenoid through circuit 113 (YE/LB). Battery
voltage is supplied from the SJB to the digital
voltage is supplied to the starter motor through
transmission range (TR) sensor through circuit 32
circuit 2037 (RD) at all times.
(RD/LB). In PARK or NEUTRAL, voltage is
supplied from the TR sensor through circuit 33 Possible Causes
(WH/PK) to the starter relay coil located in the
• Fuse(s)
BEC. The starter relay coil is supplied ground from
• An open in circuit 1050 (LG/PK), 1522 (DG), 32
the PCM through circuit 1419 (LG/YE).
(RD/LB), 33 (WH/PK) or 1419 (LG/YE)
• Powertrain control module (PCM)
2005 Mustang, 12/2004