2004 ISUZU TF SERIES wiring diagram

6E–246 ENGINE DRIVEABILITY AND EMISSIONS
10 Monitor “B1S1 (Bank 1 Sensor 1) Status” on the Tech
2.
Is the “B1S1 (Bank 1 Sensor 1) Status” in the rich
condition?—Go to Step 11Go to Step 12
11 Check items that can cause the engine to run rich.
Refer to DTC P1167 “Fuel Supply System Rich During
Deceleration Fuel Cut Off”.
Was a problem found?—Verify repair Go to Step 12
12 Check items that can cause the engine to run lean.
Refer to DTC P1171 “Fuel Supply System Lean
During Power Enrichment”.
Was a problem found?—Verify repair Go to Step 13
13 Check for proper ignition voltage output with the spark
tester.
Was a problem found?—Verify repair Go to Step 14
14 Check for a loose ignition control module ground.
Was a problem found?—Verify repair Go to Step 15
15 Visually/physically inspect all spark plug high-tension
cables. Check for the following conditions:
Verify that the resistance of all spark plug high-
tension cables are less than the specified value.
Verify that the all spark plug high-tension cables are
correctly fitted to eliminate cross-fitting.
Verify that the all spark plug high-tension cables are
not arcing to ground.
Spraying the spark plug high-tension cables with a
light mist of water may help locate an intermittent
problem.
Was a problem found?#1 cyl. 4.4k

#2 cyl. 3.6k

#3 cyl. 3.1k

#4 cyl. 2.8k
Verify repair Go to Step 16
16 1. Check the ignition coil secondary resistance.
2. Replace the coil if it is greater than the specified
resistance.
Did the coil require replacement? 2.5k
Verify repair Go to Step 17
17 1. Remove the spark plugs and check for gas or oil
fouling cracks, wear, improper gap, burned
electrodes, heavy deposits, or improper heat
range.
2. If spark plugs are fouled, the cause of fouling must
be determined before replacing the spark plugs.
Was a problem found?—Verify repair Go to Step 18
18 Check the ECM grounds to verify that they are clean
and tight. Refer to the ECM wiring diagrams.
Was a problem found?—Verify repair Go to Step 19
19 Visually/physically check the vacuum hose for splits,
kinks and proper connections and routing.
Was a problem found?—Verify repair Go to Step 20 Step Action Value(s) Yes No

6E–248 ENGINE DRIVEABILITY AND EMISSIONS
CUTS OUT, MISSES SYMPTOM
DEFINITIONS: Steady pulsation or jerking that follows
engine speed; usually more pronounced as engine load
increases.
Step Action Value(s) Yes No
1Was the “On-Board Diagnostic (OBD) System Check”
performed?—Go to Step 2Go to OBD
System Check
2 1. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found,
correct the condition as instructed in the bulletin.
Was a bulletin found that addresses the symptom?—Verify repair Go to Step 3
3 Was a visual/physical check performed?
—Go to Step 4Go to Visual /
physical Check.
4 Check the ECM grounds to verify that they are clean
and tight. Refer to the ECM wiring diagrams in
Electrical Diagnosis.
Was a problem found?—Verify repair Go to Step 5
5 Check for a loose or short circuit of ignition coil
module voltage feed.
Was a problem found?—Verify repair Go to Step 6
6 Check for a loose or short circuit of ignition coil
module ground.
Was a problem found?—Verify repair Go to Step 7
7 Visually/physically inspect all spark plug high-tension
cables. Check for the following conditions:
Verify that the resistance of all spark plug high-
tension cables are less than the specified value.
Verify that the all spark plug high-tension cables are
correctly fitted to eliminate cross-fitting.
Verify that the all spark plug high-tension cables are
not arcing to ground.
Spraying the spark plug high-tension cables with a
light mist of water may help locate an intermittent
problem.
Was a problem found?#1 cyl. 4.4k

#2 cyl. 3.6k

#3 cyl. 3.1k

#4 cyl. 2.8k
Verify repair Go to Step 7
8 Check the CKP sensor wire, shield wire, or installation
condition.
Was a problem found?—Verify repair Go to Step 9
9 Monitor “B1S1 (Bank 1 Sensor 1) Status” on the Tech
2.
Is the “B1S1 (Bank 1 Sensor 1) Status” in the rich
condition?—Go to Step 10Go to Step 11

ENGINE DRIVEABILITY AND EMISSIONS 6E–251
LACK OF POWER, SLUGGISH OR SPONGY SYMPTOM
DEFINITIONS: Engine delivers less than ex pected power. Attempting part-throttle acceleration results in little or no
increase in vehicle speed.
Step Action Value(s) Yes No
1Was the “On-Board Diagnostic (OBD) System Check”
performed?—Go to Step 2Go to OBD
System Check
2 1. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found,
correct the condition as instructed in the bulletin.
Was a bulletin found that addresses the symptom?—Verify repair Go to Step 3
3 Was a visual/physical check performed?
—Go to Step 4Go to Visual /
physical Check.
4 1. Remove and check the air filter element for dirt or
restrictions.
2. Replace the air filter element if necessary.
Was a repair required?—Verify repair Go to Step 5
5 Check the ECM grounds to verify that they are clean
and tight. Refer to the ECM wiring diagrams.
Was a problem found?—Verify repair Go to Step 6
6 1. Using a Tech 2, display the MAP sensor value in
comparison with atmosphere temperature.
2. Check for a faulty, plugged, or incorrectly installed
MAP sensor.
Was the problem found?—Verify repair Go to Step 7
7 1. Using a Tech 2, display the ECT sensor and IAT
sensor value and warm up condition compared
with the typical data.
2. Check the specified value or wire.
Was the problem found?—Verify repair Go to Step 8
8 Observe the throttle position display on the Tech 2
while slowly increasing throttle pedal.
Does the throttle position increase steady with
increasing smoothly?
—Go to Step 9Refer to
Diagnostic
Trouble Code
P0123 for
further
diagnosis
9 Check the knock sensor wire, shield wire, or
installation condition.
Was a problem found?—Verify repair Go to Step 10
10 Run Engine.
Check the fuel control Heated Ox ygen Sensor
(HO2S). When monitored on the Tech 2, the HO2S
should respond quickly to different throttle positions. If
it doesn’t check for silicon or other contaminates from
fuel or use of improper sealant. The sensors may
have a white powdery coating. Silicon contamination
sends a rich ex haust signal which causes the ECM to
command and excessively lean air/fuel mix ture.
Was a problem found?—Verify repair Go to Step 11
11 Check the fuel pressure. Refer to
Fuel System
Diagnosis
6E-108.
Was a problem found?—Verify repair Go to Step 12

HEATER AND AIR CONDITIONING 1-7
WIRING DIAGRAM (4JA1-T(L) WITH A/C)



RTW48AXF003601

ANTITHEFT SYSTEM 11B – 1
SECTION 11B
ANTITHEFT SYSTEM
CONTENTS
PAGE
Service Precaution ........................................................................................................ 11B – 3
General Description ...................................................................................................... 11B – 4
Activating the anti-theft system.............................................................................. 11B – 4
Antitheft system alarm operating conditions ........................................................ 11B – 4
Function of a keyless entry system ......................................................................... 11B – 4
Status LED ................................................................................................................. 11B – 4
Hazard relay ............................................................................................................... 11B – 4
Switches .................................................................................................................... 11B – 4
Receiver......................................................................................................................11B – 5
Range of communication ......................................................................................... 11B – 5
Diagnosis ................................................................................................................... 11B – 5
Transmitter (into remote key) .................................................................................. 11B – 5
Transmitter (into remote key) power ...................................................................... 11B – 5
Super lock .................................................................................................................. 11B – 5
No proper transmitter is available, what should be done for the system ?........ 11B – 6
DIAGRAMS AND SCHEMATICS ................................................................................... 11B – 7
SYSTEM WIRING DIAGRAMS .................................................................................. 11B – 7
COMPONENT WIRING LOCATORS (LHD) ............................................................... 11B – 8
WIRING DIAGRAM (LHD).......................................................................................... 11B – 9
WIRING DIAGRAM (LHD).......................................................................................... 11B – 10
WIRING DIAGRAM (LHD).......................................................................................... 11B – 11
WIRING DIAGRAM (LHD).......................................................................................... 11B – 12
WIRING DIAGRAM (RHD with keyless) ................................................................... 11B – 13
WIRING DIAGRAM (Super Lock).............................................................................. 11B – 14
WIRING DIAGRAM (Super Lock).............................................................................. 11B – 15
WIRING DIAGRAM (RHD) ......................................................................................... 11B – 16
WIRING DIAGRAM (RHD) ......................................................................................... 11B – 17
WIRING DIAGRAM (Super Lock).............................................................................. 11B – 18
WIRING DIAGRAM (Super Lock).............................................................................. 11B – 19
WIRING DIAGRAM (Super Lock).............................................................................. 11B – 20
Antitheft control unit (A) .......................................................................................... 11B – 21

ANTITHEFT SYSTEM 11B – 7
DIAGRAMS AND SCHEMATICS
SYSTEM WIRING DIAGRAMS
M
M
M
M
M
M
M
M
- +
ANTITHEFT CONTROL UNIT BATTERY
(12V)
80A10A
ACC Ignition switch20A
10A
10A
antitheft horn
power supply
power supply
door lock motors
hazard relay(RH)
flashers(RH)
hazard relay(LH)
flashers(LH)
status LED
immobilizer controller
daiagnostc conector
groundlock lock
locklock lock alarm trigger
super lock
unlock unlock
(unlock)
(unlock)
unlock
driver door rear door(LH) rear door(RH)rear door(LH) rear door(RH)
assist door driver door assist doordriver door
assist door
driver door assist door
engine hood contact switch
door contact switch
auto door lock switch auto door lock
door lock cylinder
disarmwith super
lock without
super lock

ANTITHEFT SYSTEM 11B – 9
E
A
DE
CB D
D-24
D-26
D-14
D-4
D-20
L-7
H-14
R-1
P-1 D-9(EUROPE)
2nd Battery
D-18P-5
P-6
C-30 C-2
C-117
C-109
H-13
H-7
H-25
H-6
P-2R-9 L-1 L-9
JUNCTION BLOCK
B-8,B-7,B-40 RELAY
C-1
C20 FUSE
X-1
X-15 RELAY
EB-1EB16 FUSE X-16, X-17 DIODE
SBF-1SBF-9 SLOW BLOW FUSE
R-10
H-16
H-8
H-26 H-10
H-24R-6
RTW48AXF025201
WIRING DIAGRAM (LHD)

11B – 10 ANTITHEFT SYSTEM
RTW48AXF025301
B
C
Horn
switch
B-71IG1&IG2
H-27 B-55
B-56
B-62
B-63
C-108
H-6B-65
Antenna
cable
B-52H-13
H-25
B-58
B-80(RH)
B-81(LH)
H-26
H-10
H-24
B-44B-43
B-73
H-7
RTW48AXF025301
WIRING DIAGRAM (LHD)