Engine Oil Pressure Switch C103; Brake Fluid Level Switch C124; Instrument Cluster C220 - Ford Mustang 2005 Workshop Manual

2005 Mustang Workshop Manual
operate correctly
The message center warning chime is
inoperative
The message center switch tone is
inoperative
Connector Circuit Reference

Engine Oil Pressure Switch C103

Pin Number Circuit
(s) Designation/Description
1 208 (GY) oil pressure signal
circuit

Brake Fluid Level Switch C124

Pin Number
(s) Circuit Designation/Description
1 547 (LG/YE) brake fluid level signal
circuit
2 512 (TN/LG) brake fluid level return
circuit

Instrument Cluster C220

Pin
Number(s) Circuit Designation/Description
2 1205 (BK) ground
3 1001 (WH/YE) B+ voltage feed, hot at all
times
6 1411 (GY/OG) message center switch input 0 volts, less than 5 ohms between the instrument cluster and the message center switch. Greater than 10,000 ohms
7 1410 (TN/OG) message center switch return 0 volts, less than 5 ohms between the instrument cluster and the message center switch. Greater than 10,000 ohms
13 1414 (LG/VT) key-in-ignition switch input
23 1083 (LB/PK) safety belt warning indicator
control circuit
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module (RCM)
If the safety belt and air bag warning indicators do not operate correctly,
Instrument cluster
GO to Pinpoint Test H
Test R
If the safety belt and air bag warning indicators operate correctly,
INSTALL a new instrument cluster. REFER to
this section. TEST the system for normal operation.
Instrument cluster CONNECT the diagnostic tool. SELECT the instrument cluster warning lamps
and chime active command and trigger the chimes on.
If the chimes sound, the system is operating correctly at this time.
If the chimes do not sound, INSTALL a new instrument cluster. REFER
to
operation.
Instrument cluster CHECK the operation of the message center switches.
If the message center switches do not operate correctly,
Test
If the message center switches operate correctly, INSTALL a new
instrument cluster. REFER to
TEST the system for normal operation.
Normal Condition/Measurement
Less than 5 ohms between the oil pressure switch and the smart junction box (SJB). Greater than 10,000 ohms between the oil
pressure switch and ground.
Normal Condition/Measurement
Less than 5 ohms between the brake fluid switch and the smart junction box (SJB). Greater than 10,000 ohms between the brake
fluid level switch and ground.
Less than 5 ohms between the brake fluid level switch and the SJB.
Normal Condition/Measurement
0 volts, less than 5 ohms between the instrument cluster and ground.
Greater than 10 volts at all times, less than 5 ohms between the instrument cluster and the smart junction box (SJB). Greater
than 10,000 ohms between the instrument cluster and ground.
between the instrument cluster and ground.
between the instrument cluster and ground.
0 volts with the ignition key removed from the ignition lock cylinder, greater than 10 volts with the ignition key inserted into
the ignition lock cylinder. Less than 5 ohms between the instrument cluster and the ignition switch.
0 volts, less than 5 ohms between the instrument cluster and the restraint control module (RCM). Greater than 10,000 ohms
between the instrument cluster and ground.
(safety belt warning indicator) or
(air bag warning indicator).
Instrument Cluster (IC)
Instrument Cluster (IC) in this section. TEST the system for normal
AB.
Instrument Cluster (IC)
Page 10 of 40
GO to Pinpoint
in
GO to Pinpoint
in this section.
11/14/2009