battery ISUZU TROOPER 1995 Service Manual

3F4-16 SUPPLEMENTAL RESTRAINT SYSTEM (SRS) STEERING WHEEL & COLUMN
Alignment mark
Fig. 3F4-38
\fCAUTION:
When turning the SRS coil clockwise to full, stop
turning if resistance is felt. Forced furtherturning
may damage to the cable in the SRS coil.
6. Steering column cover
• When installing the steering column cover, be
sure
to wire (through each harness) as
illustrated so that the harnesses starter
switch,
combination switch and SRS coil may
not catch wiring (Fig. 3F4-39).
Starter switch
harness
Combination switch harness
Inflator module harness
5. Steering wheel
Fig. 3F4-39
• Align the setting marks made when re­
moving.
WCAUTION:
Never apply force to the steering wheel in
direction
ofthe shaft by using a hammer or other
impacttools in an attempt to remove the steering
wheel. The steering
shaft is designed as an
energy absorbing unit.
• Tighten the steering wheel fixing nut to the
specified torque. Torque
N·m (lb·ftl 34
(25)
4. Inflator module
• Support the module and carefully connect the
module connector.
NOTE:
Pass the lead wire through the tabs on the plastic
cover (wire protector) of inflator to prevent lead
wire from being pinched.
• Secure the module with one bolt to relieve
weight on the connector wire.
• Tighten bolts to specified sequence as figure
(Fig. 3F4-40).
Torque
N·m (lb-in) 8 (69)
Fig. 3F4-40
3. Driver knee bolster (reinforcement)
2. Steering lower cover
• Install the engine hood opening lever.
1. Front console assembly
• Connect the wiring harness connectors.
• Install the transmission (for M/T) and transfer
control lever knob.
• Connect the yellow 3way SRS connector located
under the steering column.
• Connect the battery "-"terminal cable.
SYSTEM INSPECTION
• Set ignition to "ON" while watching warning
light.
• Light should flash 7 times and then go off. If
lamp does not operate correctly, refer to
Section 9J.
•

REAR WHEEL ANTILOCK BRAKE SYSTEM 5A3-9
CHART A
Rr.ABS Light "OFF" and will not Self Check
• CHECK THAT THE EBCM HARNESS CONNECTOR IS FULLY PLUGGED IN TO THE EBCM.
• PLUG CONNECTOR FULLY, AND RECHECK THE SELF
CHECK.
• CHECK FOR OPEN CIRCUIT IN EBCM GROUND WIRE, OR LOOSE CONNECTOR PIN, AND RECHECK THE SELF
CHECK.
DETERMINE REASON FOR BLOWN FUSE. REPAIR AS
REQUIRED, THEN RECHECK THE SELF CHECK AND RETEST VEHICLE. •
DISCONNECT
THE BATTERY AND EBCM HARNESS
CONNECTOR. CHECK FOR RESISTANCE BETWEEN
CONNECTOR PIN (15) AND CHASSIS GROUND WHILE
SHAKING THE HARNESS.
• CONNECT THE BATTERY, AND START THE ENGINE. CHECK FOR VOLTAGE BETWEEN EBCM HARNESS
CONNECTOR PIN (2) AND CHASSIS HARNESS GROUND WHILE SHAKING THE HARNESS.
Continued on the next page
EBCM
~ Electronic Brake Control Module

REAR WHEEL ANTILOCK BRAKE SYSTEM 5A3-15
CHART D
Rr. ABS and Brake Lights Flashing
• TURN THE IGNITION KEY TO THE OFF POSITION, AND DISCONNECT THE EBCM HARNESS CONNECTOR FROM EBCM AND IGN. KEY ON CHECK FOR VOLTAGE AT PIN {13) OF EBCM HARNESS CONNECTOR AND CHASSIS GROUND WHILE
SHAKING THE BODY HARNESS AND REAR BODY HARNESS.
REPAIR THE HARNESS FOR OPEN CIRCUIT, AND RECHECK • DISCONNECT BATTERY, AND CHECK FOR RESISTANCE AT PIN {7) OF THE EBCM HARNESS CONNECTOR AND CHASSIS GROUND WHILE SHAKING THE BODY
HARNESS AND REAR BODY HARNESS.
THE SYSTEM.
•
CHECK FOR RESISTANCE AT PIN {15) OF EBCM HARNESS
CONNECTOR, AND CHASSIS GROUND WHILE SHAKING THE BODY HARNESS AND REAR BODY HARNESS.
REPAIR OPEN CIRCUIT
IN WIRE TO PIN {15) CONNECTOR, AND RECHECK THE SYSTEM.
EBCM = Electronic Brake Control Module

5A3-20 REAR WHEEL ANTILOCK BRAKE SYSTEM
FLASHOUT DIAGNOSTIC TROUBLE CODE 3
(HIGH RESISTANCE DUMP CIRCUIT OR MALFUNCTIONING EBCM)
Anti lock valve
Isolate.
Reset SW.
(EBCM)
Dump
• DISCONNECT THE BATTERY GROUND CABLE.
• DISCONNECT EBCM HARNESS CONNECTOR FROM EBCM,
AND CHECK FOR RESISTANCE BETWEEN EBCM HARNESS CONNECTOR PIN (9) AND CHASSIS GROUND WHILE SHAKING THE HARNESS.
CONSTANT READING
OF RESISTANCE 1 TO 3 OHMS
CHECK EBCM
VALVE AND GROUND CONNECTION
NO
PROBLEM IN EBCMIVALVE AND
GROUND CONNECTION.
CONNECT EBCM TO HARNESS CONNECTOR
THEN TURN IGNITION ON.
NO CODE 31NDICATED
REPLACE ANTILOCK
VALVE AND RECHECK THE SELF CHECK AND RETEST VEHICLE.
PROBLEM FOUND REPAIR CONNECTION(S) AND/OR GROUND
CODE 3 RETURNS
REPLACE EBCM
AND RECHECK THE SELF
CHECK.
EBCM
~ Electronic Brake Control Module
4Q
1.5 !l
Continued on the next page
•

REAR WHEEL ANTILOCK BRAKE SYSTEM 5A3-25
FLASHOUT DIAGNOSTIC TROUBLE CODE 6
(ERRATIC SPEED SENSOR READING WHILE DRIVING)
(EBCM)
Speed sensor
Test connectors Speed sensor
• DISCONNECT THE BATTERY GROUND CABLE.
• DISCONNECT THE EBCM HARNESS CONNECTOR FROM EBCM, AND
CHECK FOR RESISTANCE BETWEEN HARNESS CONNECTOR PINS, (17
AND 16) WHILE SHAKING THE HARNESS FROM SPEED SENSOR TO EBCM.
EBCM harness connector
Pin (17)
ERRATIC RESISTANCE READING.
REPAIR LOOSE CONNECTION
IN THE SPEED SENSOR
CIRCUITS; CHECK FOR DIRTY OR LOOSE PINS AND FRAYED OR SHORTED CONNECTORS AND RETEST VEHICLE.
METAL CHIPS ARE PRESENT.
DRAIN
AND CLEAN DIFFERENTIAL. CHECK EXCITER RING FOR BROKEN OR CHIPPED TEETH. RETEST VEHICLE.
TEETH ARE DAMAGED, OR LATERAL RUNOUT OF EXCITER
RING IS VISIBLE.
Continued on the next page
CONSTANT READING 1000 TO 2000 OHMS
•
CHECK FOR A BUILD-UP OF METAL CHIPS ON SPEED
SENSOR MAGNETIC POLE PIECE.
NO METAL CHIPS ARE PRESENT.
• ROTATE EXCITER RING,
AND CHECK FOR DAMAGE TO TEETH.
TEETH
ARE INTACT, AND NO VISIBLE LATERAL RUNOUT IS OBSERVED.
Continued on the next page
EBCM
= Electronic Brake Control Module

REAR WHEEL ANTILOCK BRAKE SYSTEM 5A3-27
FLASHOUT DIAGNOSTIC TROUBLE CODE 7
(ISOLATION OUTPUT MISSING OR ANTI LOCK VALVE WIRING SHORTED TO
GROUND)
Anti lock valve
Isolate.
ResetSW. 40
(EBCM)
Dump
• DISCONNECT THE ANTILOCK VALVE CONNECTOR, AND CHECK FOR RESISTANCE BETWEEN THE VALVE ISOLATION SOLENOID PIN (4) AND
THE VALVE GROUND PIN (3) IN THE VALVE CONNECTOR.
Valve
connector
CONSTANT READING OF RESISTANCE UNDER 3 OHMS
REPLACE ANTILOCK VALVE, AND RECHECK THE SELF CHECK.
CONSTANT READING OF RESISTANCE 3 TO 6 OHMS
• DISCONNECT
THE BATTERY. • DISCONNECT THE EBCM HARNESS CONNECTOR FROM EBCM, AND CHECK FOR RESISTANCE BETWEEN THE ISOLATION PIN (1) OF EBCM HARNESS CONNECTOR AND CHASSIS GROUND WHILE SHAKING THE HARNESS.
Continued on the next page
EBCM
= Electronic Brake Control Module

5A3-28 REAR WHEEL ANTILOCK BRAKE SYSTEM
Continued from the previous page
I
I CONSTANT READING OF CONSTANT READING OF I ERRATIC RESISTANCE READING. I RESISTANCE OVER 20K OHMS
RESISTANCE UNDER 20K OHMS
I CONNECT BATTERY AND EBCM REPAIR ISOLATION WIRE FOR A L REPAIR THE HARNESS. I HARNESS CONNECTOR, THEN SHORT TO GROUND BETWEEN
TURN IGNITION ON.
ANTILOCK VALVE AND EBCM, AND RECHECK THE SELF CHECK.
NO
CODE 7 INDICATED I I CODE 7 RETURNS J
I
REPLACE ANTI LOCK VALVE AND RECHECK THE SELF CHECK I AND RETEST VEHICLE. I REPLACE EBCM AND RECHECK THE SELF CHECK. I
EBCM -Electronic Brake Control Module
•

REAR WHEEL ANTILOCK BRAKE SYSTEM 5A3-31
FLASHOUT DIAGNOSTIC TROUBLE CODE 9
(HIGH SENSOR RESISTANCE)
(EBCM)
Speed
sensor
Speed sensor
• DISCONNECT THE SENSOR HARNESS CONNECTOR FROM SPEED ..--..., SENSOR, AND CHECK FOR RESISTANCE BETWEEN THE TWO SENSOR
PINS WHILE SHAKING THE HARNESS.
CONSTANT READING
OF RESISTANCE OVER 2500 OHMS
REPLACE SENSOR, RECHECK RESISTANCE READING, AND RECHECK THE SELF CHECK.
CONSTANT READING OF RESISTANCE 1000 TO 2500 OHMS
• RECONNECT SENSOR HARNESS
CONNECTOR TO SPEED SENSOR.
• DISCONNECT
BATTERY AND DISCONNECT EBCM HARNESS
CONNECTOR FROM EBCM, AND CHECK FOR RESISTANCE BETWEEN PIN (17) AND PIN (16) IN EBCM HARNESS CONNECTOR
WHILE SHAKING THE HARNESS.
EBCM
harness connector
ERRATIC RESISTANCE READING.
REPLACE SENSOR, RECHECK RESISTANCE READING, AND RECHECK THE SELF CHECK.
EBCM
- Electronic Brake Control Module
Continued on the next page

REAR WHEEL ANTILOCK BRAKE SYSTEM 5A3-33
FLASH OUT DIAGNOSTIC TROUBLE CODE 10
(LOW SENSOR RESISTANCE)
(EBCM)
Speed
sensor
Speed sensor
• DISCONNECT THE SENSOR HARNESS CONNECTOR FROM SPEED SENSOR, AND CHECK FOR RESISTANCE BETWEEN THE TWO SENSOR
PINS WHILE SHAKING THE HARNESS.
CONSTANT READING OF RESISTANCE UNDER 1000 OHMS
REPLACE SENSOR, AND RECHECK RESISTANCE READING, AND RECHECK THE SELF CHECK. CONSTANT
READING
OF RESISTANCE 1000 TO 2500 OHMS
• RECONNECT SENSOR HARNESS
CONNECTOR TO SPEED SENSOR.
• DISCONNECT BATTERY,
AND DISCONNECT EBCM HARNESS
CONNECTOR FROM EBCM, AND CHECK FOR RESISTANCE BETWEEN PIN (16) IN EBCM
HARNESS CONNECTOR AND CHASSIS GROUND WHILE
SHAKING THE HARNESS.
ERRATIC RESISTANCE READING.
REPLACE SENSOR,
RECHECK RESISTANCE READING, AND RECHECK THE SELF CHECK.
EBCM
= Electronic Brake Control Module
Continued on the next page

5A3-34 REAR WHEEL ANTILOCK BRAKE SYSTEM
CONSTANT READING OF RESISTANCE OVER 20K OHMS
REPAIR SENSOR WIRE
FOR A SHORT TO GROUND BETWEEN EBCM AND SENSOR, CHECK FOR FRAYED OR SHORTED WIRES IN THE CONNECTOR, AND RECHECK THE SELF CHECK.
Continued from the previous page
I
CONSTANT READING OF RESISTANCE UNDER 20K OHMS
• DISCONNECT
THE SENSOR
HARNESS CONNECTOR FROM
SPEED SENSOR, AND CHECK FOR RESISTANCE BETWEEN PIN (17)
AND PIN (16) IN EBCM HARNESS
CONNECTOR WHILE SHAKING
THE HARNESS.
= [',...,J-2.,..1-3..--14....,l~'l's...,, 1-6-.-17, la"'l EBCM
harness connector
l9l10111112t~ 14Jl5116117) :) Pin (17)
f f Pin (166~,~~.
!.TJ -I
~~···~
CONSTANT READING OF RESISTANCE OVER 20K OHMS
• RECONNECT
BATTERY AND EBCM HARNESS CONNECTOR.
• RECONNECT SENSOR HARNESS
TO SPEED SENSOR.
•
THEN TURN IGNITION ON.
NO
CODE 10 INDICATED CONSTANT
READING
OF I RESISTANCE UNDER 20K OHMS
REPAIR SENSOR WIRES
FOR A SHORT CIRCUIT BETWEEN THEM,
AND CHECK FOR FRAYED WIRE OF SHORTED CONNECTORS, AND RECHECK THE SELF CHECK.
I l
I ERRATIC RESISTANCE READING. I
l REPAIR THE HARNESS. I
I
ERRATIC RESISTANCE READING. I
I REPAIR THE HARNESS. I
I CODE 10 RETURNS I
I REPLACE SENSOR AND RECHECK THE SELF CHECK AND I RETEST VEHICLE. l REPLACE EBCM AND RECHECK THE SELF CHECK. I
EBCM -Electronic Brake Control Module
•