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Table 3-1. Tower PCA Connector Pinouts
PIN
ALT FRC / J3
Tower card connector: T and B Corp. #500-1627ES
User's harness end: AMP #499936-3
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
ALT USR / J4
Tower card connector: T and B Corp. #500-1627ES
User's harness end: AMP #499936-3
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
SIGNAL
COMMENTS
+12BF
Uncommitted supply
FRC1+
User signal
FRC1-
"
FRC2+
"
FRC2-
"
FRC3+
"
FRC3-
"
FRC4+
"
FRC4-
"
FRC5+
"
FRC5-
Force balance
12B-RTN
Uncommitted supply
Sig-2026+
Solenoid drive channel
Sig-2026-
Sig-2025+
Sig-2025-
+12BF
Uncommitted supply
USR1+
User signal
USR1-
"
USR2+
"
USR2-
"
USR3+
"
USR3-
"
USR4+
"
USR4-
"
USR5+
"
USR5-
"
12B-RTN
Uncommitted supply
Sig-2026+
Solenoid drive channel
Sig-2026-
Sig-2025+
Sig-2025-
(Table 3-1 continued on next page)
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