Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Service manual — part 242
6D3–23
STARTING AND CHARGING SYSTEM (6VE1 3.5L)
Rectifier Assembly
1. Measure the resistance between each diode terminal
and aluminum diode fin in forward and reverse
directions with the connection of the tester leads
switched. The diodes are normal if resistance is
nearly zero ohms in one direction and is infinitely high
in the other direction.
2. If a diode has no resistance or equal resistance in
both directions, it is defective and should be replaced
together with the holder.
066RS036
IC Regulator Assembly
Connect a variable resistor, two 12V batteries, a fixed
resistor, and a voltmeter to the IC regulator as shown in
illustration.
a. Measuring equipment specifications
1. Fixed resistor (R1) : 10 Ohms /3W
2. Variable resistor (Rv) : 0-300 Ohms/12W
3. Batteries (BAT1, BAT2) : 12V (2 Batteries)
4. DC voltmeter : 0-50V/0.5 steps (4 Check points)
b. Measuring procedure
1. Measure the voltage “V1” across the first battery
(BAT1). If the reading is between 10 and 13 volts,
the battery is normal.
2. Measure the voltage “V3” across both the batteries
(BAT1, BAT2). If the reading is between 20 and 26
bolts, the batteries are normal.
3. Gradually increase the resistance of the variable
resistor from zero. Measure the voltage “V2” (the
voltage across the F and E terminals).
Check to see that the voltage across “V1” changes at
this time. If there is no change, the voltage regulator
is faulty and must be replaced.
4. Measure the voltage at “V4” (the voltage across the
variable resistor center tap and terminal E with the
variable resistor resistance held constant). The
measured voltage should be within the specified
(14.4
±
0.3 volts) limits. If it is not, the regulator must
be replaced.
066RX003
Reassembly
To reassemble, follow the disassembly steps in the
reverse order, noting the following points:
NOTE:
D
Never make battery connections with polarities
reversed, or battery will be shorted via the diodes.
This will cause damage to the diodes.
D
Do not connect generator B terminal to ground; it is
connected directly to the battery.
This cable will burn if it is connected to ground.
D
Make sure to disconnect the positive (+) terminal of
the battery when quick-charging battery .
Diodes may be damaged due to abnormal pulse
voltage generated by the quick charger.
D
When reassembling the front section to rear section,
insert a stiff wire into hole in the rear face of the rear
cover from the outboard side to support the brush in
raised position, then insert the front section to which
rotor is assembled.
D
Reassemble parts carefully to be sure they fit into
their original position, paying attention to the
insulated portions.
D
Wipe insulating tubes, washers and plates clean and
install them in position carefully to avoid getting oil or
grease on them.
6D3–24 STARTING AND CHARGING SYSTEM (6VE1 3.5L)
1. Using a press with a socket wrench attached,
reassemble rotor and rear end cover assembly in the
front cover.
066RS022
2. Install pulley on the rotor.
Secure the pulley directly in the vise between two
copper plates, and tighten nut to the specified torque.
Torque: 111 N·m (82 lb ft)
066RS010
Bench Test
Conduct a bench test of the generator.
066RS023
Preparation
Remove generator from the vehicle (see “Generator
removal”).
1. Secure generator to the bench test equipment and
connect wires.
Terminal “IG” for energization
Terminal “L” for neutral (warning lamp)
Terminal “B” for output
2. Conduct the generator characteristic test.
Characteristics of generator are shown in illustration.
Repair or replace the generator if its outputs are
abnormal.
066RX001
6D3–25
STARTING AND CHARGING SYSTEM (6VE1 3.5L)
Main Data and Specifications
General Specifications
Battery voltage
V
12
Rated output
A
90
Direction of rotation
(as viewed from pulley side)
Clockwise
Rated rotation speed
rpm
5000
Maximum speed
rpm
18000
6E–1
6VE1 3.5L ENGINE DRIVEABILITY AND EMISSIONS
AXIOM
ENGINE
6VE1 3.5L ENGINE
DRIVEABILITY AND EMISSIONS
CONTENTS
Specifications
6E–6
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Tightening Specifications
6E–6
. . . . . . . . . . . . . . .
Diagrams and Schematics
6E–7
. . . . . . . . . . . . . . . .
PCM Wiring Diagram (1 of 7)
6E–7
. . . . . . . . . . . .
PCM Wiring Diagram (2 of 7)
6E–8
. . . . . . . . . . . .
PCM Wiring Diagram (3 of 7)
6E–9
. . . . . . . . . . . .
PCM Wiring Diagram (4 of 7)
6E–10
. . . . . . . . . . . .
PCM Wiring Diagram (5 of 7)
6E–11
. . . . . . . . . . . .
PCM Wiring Diagram (6 of 7)
6E–12
. . . . . . . . . . . .
PCM Wiring Diagram (7 of 7)
6E–13
. . . . . . . . . . . .
PCM Pinouts
6E–14
. . . . . . . . . . . . . . . . . . . . . . . . . . .
PCM Pinout Table, 80-Way Blue Connector
– Row “F1
∼
20”
6E–14
. . . . . . . . . . . . . . . . . . . . . .
PCM Pinout Table, 80-Way Blue Connector
– Row “F20
∼
40”
6E–15
. . . . . . . . . . . . . . . . . . . . .
PCM Pinout Table, 80-Way Blue Connector
– Row “F41
∼
60”
6E–16
. . . . . . . . . . . . . . . . . . . . .
PCM Pinout Table, 80-Way Blue Connector
– Row “F61
∼
80”
6E–17
. . . . . . . . . . . . . . . . . . . . .
PCM Pinout Table, 80-Way Red Connector
– Row “S1
∼
20”
6E–19
. . . . . . . . . . . . . . . . . . . . . .
PCM Pinout Table, 80-Way Red Connector
– Row “S21
∼
40”
6E–21
. . . . . . . . . . . . . . . . . . . . .
PCM Pinout Table, 80-Way Red Connector
– Row “S41
∼
60”
6E–23
. . . . . . . . . . . . . . . . . . . . .
PCM Pinout Table, 80-Way Red Connector
– Row “S61
∼
80”
6E–25
. . . . . . . . . . . . . . . . . . . . .
Component Locators
6E–27
. . . . . . . . . . . . . . . . . . .
Undercarriage Component Locator
6E–29
. . . . . .
Fuse and Relay Panel (Underhood
Electrical Center)
6E–30
. . . . . . . . . . . . . . . . . . . . .
Sensors and Miscellaneous Component
Locators
6E–31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis
6E–33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strategy-Based Diagnostics
6E–33
. . . . . . . . . . . . .
DTC Stored
6E–33
. . . . . . . . . . . . . . . . . . . . . . . . . . .
No DTC
6E–33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
No Matching Symptom
6E–33
. . . . . . . . . . . . . . . . .
Intermittents
6E–33
. . . . . . . . . . . . . . . . . . . . . . . . . .
No Trouble Found
6E–33
. . . . . . . . . . . . . . . . . . . . .
Verifying Vehicle Repair
6E–33
. . . . . . . . . . . . . . . .
General Service Information
6E–33
. . . . . . . . . . . . . .
OBD II Serviceablity Issues
6E–33
. . . . . . . . . . . . .
Emissions Control Information Label
6E–34
. . . . .
Visual / Physical Engine Compartment
Inspection
6E–34
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic Knowledge of Tools Required
6E–35
. . . . . .
Serial Data Communications
6E–35
. . . . . . . . . . . . . .
Class 2 Serial Data Communications
6E–35
. . . . .
On-Board Diagnostic (OBD II)
6E–35
. . . . . . . . . . . . .
On-Board Diagnostic Tests
6E–35
. . . . . . . . . . . . .
Comprehensive Component Monitor
Diagnostic Operation
6E–35
. . . . . . . . . . . . . . . . . .
System Status and Drive Cycle for
Satisfying Federal Inspection/Maintenance
(I/M 240) Regulations
6E–36
. . . . . . . . . . . . . . . . . .
Common OBD II Terms
6E–36
. . . . . . . . . . . . . . . . .
The Diagnostic Executive
6E–36
. . . . . . . . . . . . . . .
DTC Types
6E–37
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Decimal/Binary/Hexadecimal Conversions
6E–39
Verifying Vehicle Repair
6E–39
. . . . . . . . . . . . . . . .
Reading Diagnostic Trouble Codes Using
The Tech 2 Scan Tool
6E–39
. . . . . . . . . . . . . . . . .
Tech 2
6E–40
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tech 2 Features
6E–41
. . . . . . . . . . . . . . . . . . . . . . .
Getting Started
6E–41
. . . . . . . . . . . . . . . . . . . . . . . .
Operating Procedure (For Example)
6E–42
. . . . .
DTC Modes
6E–43
. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC Information Mode
6E–43
. . . . . . . . . . . . . . . . .
Miscellaneous Test
6E–44
. . . . . . . . . . . . . . . . . . . .
Lamps Test
6E–44
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Relays Test
6E–46
. . . . . . . . . . . . . . . . . . . . . . . . . . .
EVAP Test
6E–47
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel System Test
6E–48
. . . . . . . . . . . . . . . . . . . . . .
Instruments Test
6E–50
. . . . . . . . . . . . . . . . . . . . . . .
EGR Control Test
6E–52
. . . . . . . . . . . . . . . . . . . . . .
Variable Intake Manifold Solenoid Test
6E–52
. . .
Injector Balance Test
6E–54
. . . . . . . . . . . . . . . . . . .
Plotting Snapshot Graph
6E–54
. . . . . . . . . . . . . . . . .
Plotting Graph Flow Chart (Plotting graph
after obtaining vehicle information)
6E–55
. . . . . .
Flow Chart for Snapshot Replay (Plotting
Graph)
6E–56
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Primary System-Based Diagnostic
6E–57
. . . . . . . . .
Primary System-Based Diagnostic
6E–57
. . . . . . .
Fuel Control Heated Oxygen Sensor
6E–57
. . . . .
HO2S Heater
6E–57
. . . . . . . . . . . . . . . . . . . . . . . . .
Catalyst Monitor Heated Oxygen Sensors
and Diagnostic Operation
6E–57
. . . . . . . . . . . . . .
Misfire Monitor Diagnostic Operation
6E–58
. . . . . . .
Misfire Monitor Diagnostic Operation
6E–58
. . . . .
Misfire Counters
6E–58
. . . . . . . . . . . . . . . . . . . . . . .
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