Tcm ISUZU TF SERIES 2004 Workshop Manual

8A-2 ELECTRICAL-BODY AND CHASSIS
PAGE
Fuse and Slow Blow Fuse Location (Relay and Fuse Box) .................................... 8A- 31
Fuse Location ............................................................................................................. 8A- 33
Diode Location ........................................................................................................... 8A- 34
Fuse Block Circuit ...................................................................................................... 8A- 35
Fuse Block Circuit (C24SE) ....................................................................................... 8A- 35
Fuse Block Circuit (6VE1) ......................................................................................... 8A- 37
Fuse Block Circuit (4JA1-TC/4JH1-TC) - RHD ......................................................... 8A- 39
Fuse Block Circuit (4JA1-TC/4JH1-TC) – LHD ......................................................... 8A- 41
Fuse Block Circuit (4JH1-L) ...................................................................................... 8A- 43
Grounding Point ............................................................................................................. 8A- 45
Ground Point .............................................................................................................. 8A- 45
Ground Point Location .............................................................................................. 8A- 61
Main Cable harness Routing .......................................................................................... 8A- 63
C24SE / 6VE1 / 4JA1-L / 4JH1-TC .............................................................................. 8A- 63
Instrument Harness .................................................................................................... 8A- 71
System Repair .................................................................................................................8A- 73
Start and Charging ..................................................................................................... 8A- 73
Engine Control Module (ECM) ................................................................................... 8A- 89
Exhaust Gas Recalculation (EGR): 4JA1-L Only ...................................................... 8A- 109
Lighting ....................................................................................................................... 8A- 114
Front Fog Light ........................................................................................................... 8A- 136
Rear Fog Light ............................................................................................................ 8A- 144
Head Light Leveling ................................................................................................... 8A- 149
Illumination ................................................................................................................. 8A- 154
Hazard Warning Flasher, Turn Signal Light, Back Up Light,
Horn and Stop Light ................................................................................................. 8A- 161
Dome Light, Spot Light and Warning Buzzer .......................................................... 8A- 181
Windshield Wiper and Washer .................................................................................. 8A- 196
Transmission Control Module (TCM) ....................................................................... 8A- 214
Meter, Warning Light and Indicator Light ................................................................ 8A- 223
Heater and Air Conditioning ...................................................................................... 8A- 281
Power Door Lock ....................................................................................................... 8A- 293

8A-12 ELECTRICAL-BODY AND CHASSIS
ABBREVIATIONS
Abbreviation Meaning of abbreviation Abbreviation Meaning of abbreviation
A Ampere (S) LH Left hand
ABS Anti-lock brake system LWB Long wheel base
ASM Assembly MPI Multipart fuel injection
AC Alternating current M/T Manual transmission
A/C Air conditioner QOS Quick On Start system
ACC Accessories RH Right hand
CARB Carburetor RR Rear
C/B Circuit breaker RWAL Rear wheel anti-lock brake system
CSD Cold start device SRS Supplemental restraint system
DIS Direct ignition system ST Start
EBCM Electronic brake control module STD Standard
ECGI Electronic control gasoline injection SW Switch
ECM Engine control module SWB Short wheel base
ECU Electronic control unit TCM Transmission control module
EFE Early fuel evaporation V Volt
42 Two-wheel drive VSV Vacuum switching valve
44 Four-wheel drive W Watt (S)
FL Fusible link WOT Wide open throttle
FRT Front W/ With
H/L Headlight W/O Without
IC Integrated circuit
IG Ignition
kW Kilowatt

ELECTRICAL-BODY AND CHASSIS 8A-31
FUSE AND SLOW BLOW FUSE LOCATION (RELAY AND FUSE BOX)
RELAY & FUSE BOX
RHD

FUSE 
ENGINE MODEL
FUSE NO. C24SE 6VE1 4JA1-TC / 4JH1-TC4JA1-L
EB-1 15A ECM 20A ECM 10A ECM 
EB-2 
10A ECM (B) 10A RR FOG 
EB-3 15A FRT FOG
10A TCM 15A FRT FOG 
EB-4 10A ACG (S) 15A FRT FOG  10A ACG (S)
EB-5 10A ILLUMI  10A ILLUMI & TAIL-RH10A ILLUMI
EB-6 10A TAIL  10A TAIL-LH 10A TAIL
EB-7 10A H/LIGHT-RH  10A H/LIGHT RH-LOW10A H/LIGHT RH
EB-8 10A H/LIGHT-LH  10A H/LIGHT LH-LOW10A H/LIGHT LH
EB-9 20A FUEL PUMP 10A O2 SENSOR 10A TRA ILER 
EB-10 10A O2 SENSOR 20A FUEL PUMP 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
10A 4WD  
EB-15 10A HORN   
EB-16 15A HAZARD 10A HAZARD  

SLOW BLOW FUSE
ENGINE MODEL
FUSE NO. C24SE 6VE1 4JA1-TC / 4JH1-TC4JA1-L
SBF-1 100A MAIN 
80A MAIN 
SBF-2  
20A COND, FAN 
SBF-3  
60A GLOW 20A COND, FAN
SBF-4 20A COND, FAN 
30A ECM 50A GLOW
SBF-5 40A IG 1   
SBF-6 
40A ABS-1  
SBF-7 
30A ABS-2  
SBF-8 30A BLOWER   
SBF-9 50A IG 2

8A-32 ELECTRICAL-BODY AND CHASSIS
FUSE AND SLOW BLOW FUSE LOCATION (RELAY AND FUSE BOX)
RELAY & FUSE BOX
LHD

FUSE  Saudi Arabia
ENGINE MODEL
FUSE NO. C24SE 6VE1 4JA1-TC / 4JH1-TC4JA1-L
EB-1 15A ECM 20A ECM 10A ECM 
EB-2 
10A ECM (B) 10A RR FOG 
EB-3 15A FRT FOG
10A TCM 15A FRT FOG 
EB-4 10A ACG (S) 15A FRT FOG  10A ACG (S)
EB-5 10A ILLUMI & TAIL-RH  10A ILLUMI & TAIL-RH 
EB-6 10A TAIL-LH  10A TAIL-LH

EB-7 10A H/LIGHT-RH 10A H/LIGHT-RH
10A H/LIGHT-RH-LOW
 10A H/LIGHT RH-LOW
10A H/LIGHT-RH-LOW
EB-8 10A H/LIGHT-LH 10A H/LIGHT-LH
10A H/LIGHT-LH-LOW
 10A H/LIGHT LH-LOW
10A H/LIGHT-LH-LOW
EB-9 20A FUEL PUMP 10A O2 SENSOR 10A TRA ILER 
EB-10 10A O2 SENSOR 20A FUEL PUMP 10A AC G (S) 
EB-11
10A H/LIGHT-RH-HIGH
10A H/LIGHT RH-HIGH 
EB-12 10A H/LIGHT-LH-HIGH
10A H/LIGHT LH-HIGH 
EB-13 10A A/C 
 
EB-14 10A 4WD
10A 4WD  
EB-15 10A HORN   
EB-16 15A HAZARD 10A HAZARD  
SLOW BLOW FUSE
ENGINE MODEL
FUSE NO. C24SE 6VE1 4JA1-TC / 4JH1-TC4JA1-L
SBF-1 100A MAIN 
80A MAIN 
SBF-2  
20A COND, FAN 
SBF-3  
60A GLOW 20A COND, FAN
SBF-4 20A COND, FAN 
30A ECM 50A GLOW
SBF-5 40A IG 1   
SBF-6 
40A ABS-1  
SBF-7 
30A ABS-2  
SBF-8 30A BLOWER   
SBF-9 50A IG 2

8A-34 ELECTRICAL-BODY AND CHASSIS
DIODE LOCATION


RELAY & FUSE BOX








DIODE
C24SE 6VE1 4JA1-TC / 4JH1-TC 4JA1-L
No.
RHD LHD RHD LHD RHD LHD RHD LHD
X-16  TCM  TCM A/C
X-17 A/C A/T, A/C A/C A/C A/C

8A-214 ELECTRICAL-BODY AND CHASSIS
TRANSMISSION CONTROL MODULE (TCM)
PARTS LOCATION (RHD)









RTW48AXF017801 & RTW48AXF017901

8A-424 ELECTRICAL-BODY AND CHASSIS


No. Connector face No. Connector face
C-68
~
C-76 NOT USED C-106
NOT USED
C-77

Clutch switch C-107
WhiteJ/B E2
C-78
~
C-93 NOT USED C-108
White
J/B E1
C-94
(6VE1)
Gray TCM-(A) C-109
SilverBody-LH ; ground
C-94
(4JH1-TC)
White TCM C-110
~
C-114NOT USED
C-95
(6VE1)
White TCM-(B) C-115
(4JH1-TC)
BrownEVRV
C-95
(4JH1-TC)
White TCM C-116


C-96
~
C103 NOT USED C-117
(6VE1)
(4JH1-TC)
Anti theft horn
C-104
Brown
Resister C-118
(4JH1-TC)
A/C Resister & Neutral switch
C-105
White
Blower motor C-119
(6VE1)
Auto cruise actuator

4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS 6E–9
ABBREVIATION CHARTS
A bbreviations A ppellation
A/C Air conditioner
A/T Automatic transmission
ACC Accessory
BLK Black
BLU Blue
BRN Brown
CAN Controller Area Network
CEL Check engine lamp
CKP Crankshaft position sensor
DLC Data link connector
DTC Diagnosis trouble code
DVM Digital voltage meter
ECM Engine control module
ECT Engine coolant temperature
EEPROM Electrically erasable & programmable read only memory
EGR Ex haust gas recirculation
EVRV Electric vacuum regulating valve
GND Ground
GRY Gray
IAT Intake air temperature
IG Ignition
M/T Manual transmission
MAB High pressure solenoid valve cutoff (German abbreviation)
MAF Mass air flow
MIL Malfunction indicator lamp
OBD On-board diagnostic
ORN Orange
PNK Pink
RED Red
PSG Pump control unit (German abbreviation)
SW Switch
TCM Transmission control module
TCV Timing control valve
TDC Top dead center
TPS Throttle position sensor
VCC Voltage constunt control
VIO Violet
VSS Vehicle speed sensor
WHT Whi te
YEL Yellow

6E–40 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
CONNECTOR LIST
No. Connector face No. Connector face
B-24
Green Meter-BC-56
ECM-A
B-54
White J/B I2C-57
ECM-B
B-56
White J/B I4C-77
Clutch switch
B-58
Black Check connectorC-94
White TCM
B-62
White Ignition switch (IGSUB : G1)C-95
White TCM
B-63
White Ignition switch (IGSUB : G2)C-107
White J/B E2
B-68
ImmobilizerC-108
White J/B E1
C-2
Silver Engine room-RH groundC-109
Silver Body-LH ; ground
C-36
Silver Engine room-LH ; GroundC-115
Brown EVRV
C-44
White Stop lamp switchC-116

6E–58 4JA1/4JH1 ENGINE DRIVEABILITY AND EMISSIONS
4JH1-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-
tionRan
ge(+) (-)
1 1 ECM Gro und BLK Co ntinu-
ity with
ground---Discon-
ne ctOh m 1 GND
2 2 ECM Gro und BLK Co ntinu-
ity with
ground---Discon-
ne ctOh m 2 GND
3 3 Batte ry Powe r Sup-
plyBLU/
REDLe ss
tha n 1V10-14V Co nnect DC V 3 GND
2525No Connection---------
2626No Connection---------
27 27 Engine Spee d Output
(To Ta cho Mete r)LGN - - Approx .
23Hz by
wave
fo rm or
approx.
6.3V Approx.
67Hz by
wave
fo rm or
approx.
6.8V Co nnect AC V 27 GND
2828No Connection---------
29 29 Throttle Positio n Sig-
na l To TCM (A16)
(AT Only )- Appro x . 140Hz by wav e fo rm (Idle:
Off duty 10% / WOT: Off duty 90%)- ---
30 30 Bra ke Switch 1 Sig-
na lGRN Le ss
tha n 1VPedal is not stepped on: Less than
1V
Pedal is stepped on: 10-14VCo nnect DC V 30 GND
31 31 Clutch Switch Signa l
(MT Only )YEL Less
tha n 1VPedal is not stepped on: 10-14V
Pe da l is ste ppe d o n: Le ss tha n 1VCo nnect DC V 31 GND
3232No Connection---------
33 33 A/C ON Signa l Rela y GRN/
YELLe ss
tha n 1VA/C request switch is turned on: 10-
14V
A/C reque st switch is turne d off:
Less than 1VCo nnect DC V 33 GND
3434No Connection---------
35 35 To Data Link Co n-
necto r No. 6 & Immo-
bilize r Co ntrol Unit
(ICU B8)YEL--------
3636No Connection---------