Ignition Switch C250; Message Center Switch C253; Parking Brake Switch C306; Fuel Pump Sender C433, C434 Remote Fuel Sender - Ford Mustang 2005 Workshop Manual

2005 Mustang Workshop Manual
24 608 (BK/YE) air bag warning indicator control
circuit
25 1266 (RD/YE) B+ voltage feed, hot in the
START/RUN positions
26 489 (PK/BK) B+ voltage feed, hot in the
START/RUN positions

Ignition Switch C250

Pin Number(s) Circuit Designation/Description
5 1414 (LG/VT) key-in-ignition switch input 0 volts, less than 5 ohms between the ignition switch and the instrument cluster.

Message Center Switch C253

Pin Number
(s) Circuit Designation/Description
2 1411 (GY/OG) message center switch
input
3 1410 (TN/OG) message center switch
return

Parking Brake Switch C306

Pin Number
(s) Circuit Designation/Description
1 1309 (RD/YE) brake warning indicator, parking
brake input circuit
2 1205 (BK) brake switch ground

Fuel Pump Sender C433, C434 Remote Fuel Sender

Pin Number
(s) Circuit Designation/Description
2 1357 (LB/YE) fuel level return signal Less than 5 ohms between the fuel pump sender and the smart junction box (SJB). Greater than 10,000 ohms between the fuel
4 (C434) 29 (YE/WH) fuel level variable input
signal
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0 volts, less than 5 ohms between the instrument cluster and the RCM. Greater than 10,000 ohms between the instrument
cluster and ground.
Greater than 10 volts with the ignition switch in the START/RUN position. Less than 5 ohms between the instrument cluster
and the SJB. Greater than 10,000 ohms between the instrument cluster and ground.
Greater than 10 volts with the ignition switch in the START/RUN position. Less than 5 ohms between the instrument cluster
and the SJB. Greater than 10,000 ohms between the instrument cluster and ground.
Normal Condition/Measurement
Normal Condition/Measurement
0 volts, less than 5 ohms between the message center switch and the instrument cluster. Greater than 10,000 ohms between the
message center switch and ground.
0 volts, less than 5 ohms between the message center switch and the instrument cluster.
Normal Condition/Measurement
Less than 5 ohms between the parking brake switch and the smart junction box (SJB). Greater than 10,000 ohms
between the parking brake switch and ground.
0 volts, less than 5 ohms between the parking brake switch and ground.
Normal Condition/Measurement
pump sender and ground with the instrument cluster disconnected.
0 volts, less than 5 ohms between the fuel pump sender and the SJB.
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11/14/2009