engine ISUZU TF SERIES 2004 Workshop Manual

6E–44 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
RELAY A ND FUSE BOX LOCATION (LHD & RHD)
RELAY & FUSE BOX
RELAY
No .RELAY
(4JA1-TC/4JH1-TC)
X -1 RELAY; TAIL LIGHT
X -2 RELAY; FRT F OG LI GHT
X -3 RELAY; HORN
X -4 RELAY; DIMMER
X -5 RELAY; GLOW
X -6 RELAY; COND, FAN
X -7 RELAY; RR FOG
X -8 RELAY; STARTER
X -9 SHORT CONNECTOR
(with Co oler) (LHD)
RELAY; HAZARD-RH (RHD)
X-10 SHORT CONNECTOR
(with Co oler) (LHD)
RELAY; HAZARD-LH (RHD)
X -11 RELAY; HEATER
X-12 RELAY; HEAD LIGHT
X-13 RELAY; ECM MAIN
X-14 RELAY; A/C COMP
X-15 RELAY; THERMO
FUSE
SLOW BLOW FUSE
NO.FUSE
(4JA1-TC/4JH1-TC)
EB-1 10A ECM
EB-2 10A RR FOG
EB-3 15A FRT FOG
EB-4 —
EB-5 10A ILLUMI & TAIL-RH
EB-6 10A TAIL-LH
EB-7 10A H/LIGHT RH-LOW
EB-8 10A H/LIGHT LH-LOW
EB-9 10A TRA ILER
EB-10 10A AC G (S)
EB-11 10A H/LIGHT RH-HIGH
EB-12 10A H/LIGHT LH-HIGH
EB-13 10A A/C
EB-14 10A 4WD
EB-15 10A HORN
EB-16 10A HAZARD
NO.SLOW BLOW FUSE
4JA1-TC/4JH1-TC
SBF-1 80A MAIN
SBF-2 20A COND, FAN
SBF-3 50A GLOW
SBF-4 30A ECM
SBF-5 40A IG 1
SBF-6 40A ABS-1
SBF-7 30A ABS-2
SBF-8 30A BLOWER
SBF-9 50A IG 2

4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–45
FUSE A ND RELAY LOCATION (LHD & RHD)
FUSE
SLOW BLOW FUSE
RELAYNo. Capacity Indication on label No. Capacity Indication on label
1——12 15A CIGER
2 10A ABS 13 15A AUDIO (+B)
3——14 20A DOOR LOCK
4 15A BACK UP 15 10A METER (+B)
5 15A METER 16 10A ROOM
6 10A TURN 17 10A ANTI THEFT
7 15A ELEC.IG 18 15A STOP
8 15A ENGINE 19 15A ACC SOCKET
9 20A FRT WIPER 20 10A STARTER
10 15A EGR 21 10A SRS
11 10A AUDIO
No. Capacity Indication on label
SBF-10 20A RR DEF
SBF-11 30A POWER WINDOW
Connector No. B-7 B-8 B-40
4JA1-TC, 4JH1-TC REAR
DEFOGGERPOWER
WINDOWACC
SOCKET
FUSE BOX

6E–46 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
ECM WIRING DIAGRAM (1/7)

4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–47
ECM WIRING DIAGRAM (2/7)

6E–48 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
ECM WIRING DIAGRAM (3/7)

4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–49
ECM WIRING DIAGRAM (4/7)

6E–50 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
ECM WIRING DIAGRAM (5/7)

4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–51
ECM WIRING DIAGRAM (6/7)

6E–52 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
ECM WIRING DIAGRAM (7/7)

4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–53
ECM CONNECTOR PIN ASSIGNMENT & OUTPUT SIGNAL
4JA1-TC ECM CONNECTOR PIN ASSIGNMENT & OUTPUT SIGNA L
View Looking Into ECM Case
Signal or Continuity Tester Position
Pin
No. B/Box
No.Pin Function Wire
ColorKey SW
OffKey SW
OnEngine
IdleEngine
2000rpmECM
Connec-
tionRange (+) (-)
1 1 ECM Gro und BLK Continuity
with
gro und---Discon-
ne ctOhm 1 GND
2 2 ECM Gro und BLK Continuity
with
gro und---Discon-
ne ctOhm 2 GND
3 3 Batte ry Powe r Supply BLU/
REDLess than
1V10-14V Connect DC V 3 GND
25 25 No Conne ctio n - - - - - - - - -
26 26 No Conne ctio n - - - - - - - - -
27 27 Engine Spee d Output
(To Ta cho Me te r)LGN - - Approx.
23Hz by
w a v e fo rm
or approx.
6.3V Approx.
67Hz by
wave form
or approx.
6.8V Co nnect AC V 27 GND
28 28 No Conne ctio n - - - - - - - - -
29 29 No Conne ctio n - - - - - - - - -
30 30 Brake Switch 1 Signal GRN Less than
1VPedal is not stepped on: Less than 1V
Pedal is stepped on: 10-14VCo nnect DC V 30 GND
31 31 Clutch Switch Signal
(MT Only )YEL Less than
1VPedal is not stepped on: 10-14V
Pedal is stepped on: Less than 1VCo nnect DC V 31 GND
32 32 No Conne ctio n - - - - - - - - -
33 33 A/C ON Signa l Re la y GRN/
YELLess than
1VA/C re que st switch is turne d on: 10-
14V
A/C request switch is turned off: Less
than 1VCo nnect DC V 33 GND
34 34 No Conne ctio n - - - - - - - - -
35 35 To Da ta Link Co nnec-
tor No. 6 & Immobi-
lize r Contro l Unit (ICU
B8)YEL--------
36 36 No Conne ctio n - - - - - - - - -
37 37 No Conne ctio n - - - - - - - - -
38 38 Throttle Po sitio n Sen-
so r (TPS) Output Sig-
na lGRN/
ORGLess than
1VLess than 1V Approx.
0.5VCo nnect DC V 38 49
39 39 Key Sw itch Input Sig-
nal Via Engine FuseWHT Less than
1V10-14V Co nnect DC V 39 GND
40 40 No Conne ctio n - - - - - - - - -