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For pin connector locations on the top of the mainPDM, see Fig. 1 .
For positions of individual pin-outs on the top of themain PDM, see Fig. 2 for connectors A through G(left-hand side), and Fig. 3 for connectors H and J(right-hand side).
For location of pin connectors and individual pin posi-tions on the bottom of the PDM, see Fig. 4 .
NOTE: To locate pin-outs, use this key: The firstletter indicates the connector in which the pin islocated. The second letter indicates the row ofthe connector. The third number, if present, indi-cates the number of the pin in the row, if thereis more than one. If there is only one pin in arow, this number is missing.
Examples: Pin number AF5 means connector A,row F, pin 5. Pin number BC means connectorB, pin C.
For a list of circuit breakers and relays installed inthe main and auxiliary power distribution modules,see Troubleshooting, 300 .
For a full schematic view of the PDM wiring, seeFig. 5 . For a detailed (partial) view of the PDM wiringschematic, see Fig. 6 and Fig. 7 .
To identify relay terminals, first check the type of re-lay. On micro relays, the terminals are numbered 1through 5, corresponding to the position numbers onthe schematic. On all other relays, the terminals arenumbered 30 through 87A, corresponding to posi-tions 1 through 5 as shown in Table 1 .
Mini Relay Terminal Numbers
Position Terminal Number
1 86
2 85
3 30
4 87A
5 87
Table 1, Mini Relay Terminal Numbers
For a diagram of the PDM power harness, seeFig. 8 .
AC
C IG
N IS
O B
AT
f541084 08/31/95
1
2
3
4
5 6 7
8
9
1. 46-Pin Connector A2. 6-Pin Connector B3. 6-Pin Connector C4. 6-Pin Connector D5. 8-Pin Connector E
6. 2-Pin Connector F7. 2-Pin Connector G8. 2-Pin Connector H9. 8-Pin Connector J
Fig. 1, Main PDM Pin Connectors (top view)
A7 B8C8 D8
E8F7
A1B1
C1 D1E1 F1
D
D
DD
E
E
E
E
F
F
F A
B
CC
A
B
F
G
H A AB B
B
B
C
C A
A
f54110302/14/96
A
B
C
DE F G
Fig. 2, Pin-Out Positions-Main PDM (left-hand side, top)
Power Distribution Module 54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998 400/1
For a full diagram of the Century Class Conventional"B" block auxiliary power module wiring harness, seeFig. 9 . For a detailed (partial) view of the CenturyClass Conventional "B" block auxiliary power modulewiring harness, see Fig. 10 and Fig. 11 .
For a full schematic view of the Century Class Con-ventional "B" block auxiliary power module wiring,see Fig. 12 . For a detailed (partial) view of the Cen-tury Class Conventional "B" block auxiliary powermodule wiring, see Fig. 13 and Fig. 14 .
For a full schematic view of the Argosy COE "B"block auxiliary power module wiring, see Fig. 15 . Fora detailed (partial) view of the Argosy COE "B" blockauxiliary power module wiring, see Fig. 16 andFig. 17 .
AC
C IG
N IS
O B
AT
A
B
B
A
C
D E
F
G
H
f54110410/04/95
J
H
Fig. 3, Pin-Out Positions-Main PDM (right-hand side,top)
f541086
A AAB B
BC CD
DE
E
F
F
F7
E8
D8
C8
B8
A7A1
B1
C1
D1
E1
F1
11/27/951 2 3 4
K L M N
1. 6-Pin Connector K2. 6-Pin Connector L3. 2-Pin Connector M4. 46-Pin Connector N
Fig. 4, Main PDM Pin Connectors (bottom view)
Power Distribution Module54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998400/2
f541242
Fig. 6 Fig. 7
Reference Diagram: D06−21957 Chg.Ltr. H
A B C
D D D E
I G N I T I O N S W I T C H
5 2
5 2 D
5 2 C
IGNI
TIO
N BU
S
1 4 A
5 2 B
IGN
POW
ER−O
PT
15A
BRKR
INST
CLU
STER
10
A BR
KR
ENG
ECM
10
A BR
KR
OPT
GA
IGN
PWR
10
A BR
KR
ENG
FAN
10
A BR
KR
BACK
−UP
LIG
HT
10A
BRKR
A/C
CLUT
CH
10A
BRKR
AIR
DRYE
R
15A
BRKR
IGN
POW
ER−O
PT
30A
BRKR
WIP
ER
15A
BRKR
MIR
ROR
15
A BR
KR
ACC
POW
ER
15A
BRKR
RADI
O
10A
BRKR
CB R
ADIO
10
A BR
KR
ACC
POW
ER−O
PT
30A
BRKR
WIN
DSHI
ELD
FAN
10
A BR
KR
SPO
TLIG
HT
10A
BRKR
OPT
SW
1
15A
BRKR
OPT
SW
2
15A
BRKR
ISO
BUS
S
14B
(TO
BAT
TERY
)
DOM
E
15A
BRKR
CIG
AR
15A
BRKR
SLEE
PER
(E−B
OX)
60
A M
AXIF
USE
UTIL
ITY
LT
15A
BRKR
HVAC
30
A M
AXIB
RKR
A C C R E L A Y I G N R E L A Y
14 (
TO B
ATTE
RY)
I G N P W R O P T 1 0 A B R K R
A C C P W R 1 0 A B R K R
MIN
I−RE
LAY
MIN
I−RE
LAY
HVAC
HI
S
HVAC
WIP
ER H
I
MIC
RO
RELA
YS
WIP
ER L
O
S
2
C O N T ’ D Z N D 8
C O N T ’ D
Z N C 8
DE
JD
NC1
AE2
AF1
AC1
AB3
AB4
BD
BE
BF
AE5
NF5
AF5
ND6
FB
DA
AE8
NE8
AD8
NB5
NB6
AB2
CD
EC
JH
JB
ED
JF
DF
LF
GB
DB
JA
JC
EE
LD
JG
EF
AC7
AC6
AC5
AC8
JE
NB3
NB4
AF3
DD
MA
AB1
NF7
BA
AA1
NF2
AA2
KA
AD5
AE1
AD4
AD1
AD2
CA
AD7
NE1
AB5
NC3
EA
KF
NB8
KD
ND7
AB6
CF
AF4
AB7
AD6
NA2
AE3
EG
EH
KE
NC5
NC6
NC7
NC8
AD3
NF6
AF2
AA5
ND8
AE4
NE7
NE6
LB
LE
CC
CE
LA
BC
FA
GA
KC
AE6
AE7
AB8
KB
DC
LC
AA4
AA3
AA7
BB
MB
AC2
AC3
AF6
AF7
EB
HA
HB
NA1
NA3
NF1
NF3
L.H.
HDL
P
15A
BRKR
(CYC
LING
)
R.H.
HDL
P
15A
BRKR
(C
YCLI
NG)
PANE
L LP
15
A BR
KR
TRLR
MRK
R
30A
MAX
IBRK
R
TRAC
TOR
TL
15A
BRKR
TRLR
TLR
30
A M
AXIB
RKR
FLAS
HER
20
A BR
KR
STO
P LP
25
A BR
KR
HORN
15
A BR
KR
ROAD
LT
20
A BR
KR
FUEL
HTR
30
A M
AXIB
RKR
DRL
10
A BR
KR
L.H.
WDO
15
A BR
KR
R.H.
WDO
15
A BR
KR
BATT
PW
R O
PT
DOO
R LO
CK
TRLR
AUX
30
A M
AXIB
RKR
PWR
SEAT
30
A BR
KR
TRLR
ABS
30
A BR
KR
CLUS
TER
10
A BR
KR
E−BO
X
40A
MAX
IFUS
E
IGNI
TIO
N
10A
BRKR
MIC
RO R
ELAY
L.H.
HDL
T
MIC
RO R
ELAY
R.H.
HDL
T
MIC
RO R
ELAY
PANE
L LP
MIN
I−RE
LAY
TRLR
MRK
R
MIC
RO R
ELAY
TRAC
TOR
TA
IL/M
RKR
MIN
I−RE
LAY
TRLR
TL
MIC
RO R
ELAY
ROAD
LP
MIN
I−RE
LAY
FUEL
HTR
NICR
O−R
ELAY
STAR
TER
LO
CKO
UT
FLAS
HER
AA6
1 4 C
B A T T B U S
5 2 A
ACC
BUS
3 5
1 2
3
2 1
5
1
5
2
3
3
2
1
5
4
4
3
2
1
5
4
3
2
1
5
4
1
3
5
2
4
2
3
5
1
4
2
3
1
5
4
1
2
5
4
3
4
5
2
1
3
3
1
2
5
4
3
5
1
2
4
3
2
1
5
4
1
4
3
2
05/15/2000 05/15/2000
Each relay terminal has a position number. On micro relays, the terminal number corresponds exactly to the positionnumber. On all other relays (mini relays, ignition-powered relays), see Table 1 .
NOTE: Starter lockout circuitry not available at this time.A. Reserved for Engine Control Module (ECM) overlays.B. Do not use.C. Circuit assignments to this optional pin position must be approved by Freightliner Engineering.D. Reserved for starter lockout circuitry.E. Reserved for ignition keyswitch courtesy light feed.
Fig. 5, Main PDM Wiring Schematic (full view)
Power Distribution Module 54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998 400/3
Reference Diagram: D06−21957 Chg. Ltr. H01/17/97
Fig. 7
Fig. 7
Fig. 7
I G N I T I O N S W I T C H
5 2
5 2 D
5 2 C
IGNI
TIO
N BU
S
1 4 A
5 2 B
IGN
POW
ER−O
PT15
A BR
KR
INST
CLU
STER
10A
BRKR
ENG
ECM
10A
BRKR
OPT
GA
IGN
PWR
10A
BRKR
ENG
FAN
10A
BRKR
BACK
−UP
LIG
HT10
A BR
KR
A/C
CLUT
CH10
A BR
KR
AIR
DRYE
R15
A BR
KR
IGN
POW
ER−O
PT30
A BR
KR
WIP
ER15
A BR
KR
MIR
ROR
15A
BRKR
ACC
POW
ER15
A BR
KR
RADI
O10
A BR
KR
CB R
ADIO
10A
BRKR
ACC
POW
ER−O
PT30
A BR
KR
WIN
DSHI
ELD
FAN
10A
BRKR
A C C R E L A YI G N R E L A Y
WIP
ER H
I
MIC
RORE
LAYS
WIP
ER L
O
S
2
DE JD NC1
AE2
AF1
AC1
AB3
AB4
BD BE BF AE5
NF5
AF5
ND6
FBDA AE8
NE8
AD8
NB5
NB6
AB2
CD EC JH JBED JFDF LFGB
DB JAAD5
AE1
AD4
AD1
AD2
CA AD7
NE1
AB5
NC3
EA KF NB8
KD ND7
AB6
CF AF4
AB7
AD6
NA2
AE3
EG EH KE NC5
NC6
NC7
NC8
AD3
NF6
AF2
AA5
ND8
L.H.
HDL
P
15A
BRKR
(CYC
LING
)
R.H.
HDL
P15
A BR
KR(C
YCLI
NG)
PANE
L LP
15A
BRKR
TRLR
MRK
R30
A M
AXIB
RKR
TRAC
TOR
TL15
A BR
KR
TRLR
TLR
30A
MAX
IBRK
R
FLAS
HER
20A
BRKR
STO
P LP
25A
BRKR
HORN
15A
BRKR
MIC
RO R
ELAY
L.H.
HDL
T
MIC
RO R
ELAY
R.H.
HDL
T
MIC
RO R
ELAY
PANE
L LP
MIN
I−RE
LAY
TRLR
MRK
R
MIC
RO R
ELAY
TRAC
TOR
TAIL
/MRK
R
MIN
I−RE
LAY
TRLR
TL
FLAS
HER
1 4 C
B A T T B U S
5 2 A
ACC
BUS
35
1 2
3
2 1
5
1 5
2 3 321 5
4 4
1
35
2
4
2 351
4
2 3
1 5
4
12 5
43
4
521 3
312 5
4
A
f541243
Each relay terminal has a position number. On micro relays, the terminal number corresponds exactly to the positionnumber. On all other relays (mini relays, ignition-powered relays), see Table 1 .A. Reserved for Engine Control Module (ECM) overlays.
Fig. 6, Main PDM Wiring Schematic (partial view)
Power Distribution Module54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998400/4
f541244
B
01/17/97DD D E
Fig. 6
Fig. 6
Fig. 6
SPO
TLIG
HT10
A BR
KR
OPT
SW
115
A BR
KR
OPT
SW
215
A BR
KRISO
BUS
S
14B
(TO
BAT
TERY
)
DOM
E15
A BR
KR
CIG
AR15
A BR
KR
SLEE
PER
(E−B
OX)
60A
MAX
IFUS
E
UTIL
ITY
LT15
A BR
KR
HVAC
30A
MAX
IBRK
R
14 (
TO B
ATTE
RY)
I G N P W R O P T1 0 A B R K R
A C C P W R1 0 A B R K R
MIN
I−RE
LAY
MIN
I−RE
LAY
HVAC
HI
S
HVAC
C O N T ’ D
Z N C 8
JC EELD JGEF AC7
AC6
AC5
AC8
JE NB3
NB4
AF3
DD MA
AB1
NF7
BA AA1
NF2
AA2
KA
AE4
NE7
NE6
LB LE CC CE LA BC FA GA
KC AE6
AE7
AB8
KB DC LC AA4
AA3
AA7
BB MB
AC2
AC3
AF6
AF7
EB HA HB NA1
NA3
NF1
NF3
ROAD
LT
20A
BRKR
FUEL
HTR
30A
MAX
IBRK
R
DRL
10A
BRKR
L.H.
WDO
15A
BRKR
R.H.
WDO
15A
BRKR
BATT
PW
R O
PTDO
OR
LOCK
TRLR
AUX
30A
MAX
IBRK
R
PWR
SEAT
30A
BRKR
TRLR
ABS
30A
BRKR
CLUS
TER
10A
BRKR
E−BO
X40
A M
AXIF
USE
IGNI
TIO
N10
A BR
KR
ROAD
LP
MIN
I−RE
LAY
FUEL
HTR
NICR
O−R
ELAY
STAR
TER
LOCK
OUT
AA6
321 5
4
321 5
4
35
12
4
321 5
4
1
432
C O N T ’ D
Z N D 8
C
Reference Diagram: D06−21957 Chg. Ltr. H
Each relay terminal has a position number. On micro relays, the terminal number corresponds exactly to the positionnumber. On all other relays (mini relays, ignition-powered relays), see Table 1 .
NOTE: Starter lockout circuitry not available at this time.
B. Do not use.C. Circuit assignments to this optional pin position must
be approved by Freightliner Engineering.
D. Reserved for starter lockout circuitry.E. Reserved for ignition keyswitch courtesy light feed.
Fig. 7, Main PDM Wiring Schematic (partial view)
Power Distribution Module 54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998 400/5
f541093a10/06/97
1 2
3 4 5 6
8
A
Reference Diagram: A06−23114 Chg. Ltr. E
7
A. Mounting Tang Up1. IGN Relay (ignition-powered)2. ACC Relay (ignition-powered)3. BAT Bus Ring Connector4. ISO Bus Ring Connector
5. IGN Bus Ring Connector6. ACC Bus Ring Connector7. To Dash Harness8. To Power Stud
Fig. 8, Main PDM Power Harness
f541087a
Fig. 10 Fig. 11
41S GND
41R 57C 57B 57A
376A 376B 376C
GNDE
Reference Diagram: A06−24054 Chg.Ltr. B
GNDE
434R
10/06/97
Fig. 9, Auxiliary Power Module Wiring Harness (full view), Century Class Conventional
Power Distribution Module54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998400/6
08/07/96 f541088a
Fig. 11
41S GND
41R
57C
57B
57A
376A376B376C
GNDE1 2 3
4
A
5
5
5
6
Reference Diagram: A06−24054 Chg.Ltr. B
A. Top View of Component Mounting Surface Shown1. Block B3—Antilock Brake System (ABS), Diagnostic Connector, and, if installed, Electronic Air Suspension (ECAS)2. Block B2—Sleeper Cab Electrical Accessories3. Block B1—Sleeper Cab Heating, Ventilation, and Air Conditioning System (Sleeper HVAC)4. To Data Logging Unit Option Harness5. To Sleeper Harness6. To ABS Harness
Fig. 10, Auxiliary Power Module Wiring Harness (partial view), Century Class Conventional
Power Distribution Module 54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998 400/7
f541089a10/06/97Reference Diagram: A06−24054 Chg.Ltr. B
Fig. 10
1
2
33
3
4
GNDE
434R
331
1. To ECAS Harness (optional)2. To Custom Harness (optional)
3. From Cab Harness4. To Diagnostic Connector Harness
Fig. 11, Auxiliary Power Module Wiring Harness (partial view), Century Class Conventional
Power Distribution Module54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998400/8
f541095a
Fig. 13 Fig. 14
Reference Diagram D06−24063 Chg Ltr. A
9B
8B
10/06/97
Fig. 12, Auxiliary Power Module Wiring Schematic (full view), Century Class Conventional
Power Distribution Module 54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998 400/9
f541094aReference Diagram D06−24063 Chg.Ltr. A
Fig. 14
Fig. 14
Fig. 14
07/15/98
Fig. 13, Auxiliary Power Module Wiring Schematic (partial view), Century Class Conventional
Power Distribution Module54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998400/10
f541096aReference Diagram D06−24063 Chg. Ltr. A
Fig. 13
Fig. 13
Fig. 13
07/15/98
9A
9B
8B
Fig. 14, Auxiliary Power Module Wiring Schematic (partial view), Century Class Conventional
Power Distribution Module 54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998 400/11
06/23/98
Ref. Diag. D06−27704
Fig. 16 Fig. 17
f542602
1
2
3 4 5 6
Chg. Ltr. A
1. Connector P62. Connector P5
3. Connector P14. Connector P2
5. Connector P36. Connector P4
Fig. 15, Auxiliary Power Module Wiring Schematic (full view), Argosy COE
Power Distribution Module54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998400/12
06/23/98
1
2
3 4
f542603
Fig. 17
Ref. Diag. D06−27704Chg. Ltr. A
1. Connector P62. Connector P5
3. Connector P14. Connector P2
Fig. 16, Auxiliary Power Module Wiring Schematic (partial view), Argosy COE
Power Distribution Module 54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998 400/13
06/23/98
5 6
f542604
Fig. 16
Ref. Diag. D06−27704Chg. Ltr. A
5. Connector P3 6. Connector P4
Fig. 17, Auxiliary Power Module Wiring Schematic (partial view), Argosy COE
Power Distribution Module54.05Specifications
Century Class Trucks Workshop Manual, Supplement 11, October 1998400/14
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