steering ISUZU TROOPER 1995 Workshop Manual

Supplemental Restraint System 9J-89
DTC44
PASSENGER SOURCE FEED LOW
STEP
ACTION YES NO
1 WAS THE "SRS DIAGNOSTIC
SYSTEM CHECK" GOTO STEP2. GO
TO THE "SRS
PERFORMED? DIAGNOSTIC
SYSTEM CHECK."
2
WHEN MEASUREMENTS ARE REQUESTED IN THIS CHART GOTO STEP3. GOTOSTEP5.
USE J-39200 DVM WITH CORRECT TERMINAL ADAPTER FROM J-35616-A.
IGNITION SWITCH "OFF."
DISCONNECT DRIVER AND PASSENGER INFLATOR
MODULES, YELLOW 2-WAY OR 4-WAY CONNECTORS
LOCATED AT THE TOP OF THE STEERING COLUMN AND
BEHIND THE 1/P COMPONENT DOOR ASSEMBLY.
DISCONNECT DERM. CHECK FOR PROPER CONNECTION TO DERM AT TERMINAL "A6".
IF OK THEN DISCONNECT DUAL POLE ARMING SENSOR.
CHECK FOR PROPER CONNECTION TO DUAL POLE
ARMING SENSOR AT TERMINAL "1".
IF OK, THEN MEASURE RESISTANCE FROM DUAL POLE
ARMING SENSOR HARNESS CONNECTOR TERMINAL "1 "TO DERM HARNESS CONNECTOR TERMINAL "A6".
IS RESISTANCE S.On OR LESS?
3 MEASURE RESISTANCE ON DERM HARNESS CONNECTOR GOTOSTEP4. GOTOSTEP5.
FROM TERMINAL "A6" TO TERMINAL "A1"(GROUND). DOES J-39200 DISPLAY "OL"(INFINITE)?
4 MEASURE RESISTANCE ON DUAL POLE ARMING SENSOR GOTOSTEP6. GO TO CHART A.
CONNECTOR FROM TERMINAL "1" TO TERMINAL "7". IS RESISTANCE 12.9Kn OR MORE?
5 REPLACE SRS
HARNESS. GOTOSTEP7.
6 REPLACE
DUAL POLE ARMING SENSOR. GOTOSTEP7.
7 RECONNECT ALL SRS COMPONENTS, ENSURE ALL GO TO THE "SRS DIAGNOSTIC SYSTEM
COMPONENTS
ARE PROPERLY MOUNTED. CHECK''. CLEAR SRS DIAGNOSTIC TROUBLE CODES. REPEAT THE "SRS DIAGNOSTIC SYSTEM CHECK."

9J-94 Supplemental Restraint System
DTC53
DRIVER SIDE LOW HIGH RESISTANCE
CIRCUIT DESCRIPTION
During the "Initiator Assembly Resistance Test" the
DERM grounds the "Driver Side
Low" terminal "B8" and
turns "ON" the passenger current source at the
"Passenger Side High" terminal "A7". This causes a
known amount of current to
flow through the passenger
initiator circuit
allowing this resistance to be calculated.
The normal, non-deployment current flow through the
driver
deployment loop is also affected since the DERM
is
supplying ground through a resistor bypassing the
ground
supplied by the resistance of the discriminating
sensor network. When the
voltage difference between
"Driver Side High" terminal "B9" and "Driver Side Low"
terminal "B8" is above a specified value DTC 53 is set.
DTC WILL SET WHEN
The voltage difference between "Driver Side High"
terminal "B9" Driver Side Low" terminal "B8" is above a
specified
value. This test

is run once each ignition
cycle
during the "Initiator Assembly Resistance Test" when: 1)
No "higher priority
faults" are detected during "Turn-O.N,"
2) No "higher priority faults" are detected dunng
"Continuous Monitoring for one second, 3) No "Crank"
signal
present, 4) "Ignition 1" voltage is above a specified
value.
ACTION TAKEN
DERM turns "ON" the "AIR BAG" warning lamp and sets
a diagnostic
trouble code.
DTC WILL CLEAR WHEN
The ignition switch is turned "OFF."
DTC CHART TEST DESCRIPTION
Number(s) below refer to step number(s) on the
diagnostic chart.
2. This test determines whether the malfunction is due
to a high resistance or open
in the "Driver Side Low"
circuit between the DERM and the Steering
column
harness connector.
DIAGNOSTIC AIDS
An intermittent condition is likely to be caused by a poor
connection at DERM
terminal "B8" or an open in CKT
IB20.
The test for this diagnostic trouble code is run only
while
the "AIR BAG" warning lamp is performing the bulb
check. When a scan tool "Clear Codes" command is
issued and the
malfunction is still present, the dtc will not
reappear
until the next ignition cycle.
iYOS BLK/RE
.rBODY t824 VLT IB21J
DRIVER 36VLR PASS. 38VLR PASS. SOURCE SENSE
PASS SIDE HIGH
PASS SIDE LOW
l---....!E:L_-+--4+j-+-___..!!IB3~4--BLK/BLU
~-'!W.-4---4-~----'TO ~iJELT '"*' BLU
SERIAL DATA
DRIVER SIDE HIGH DRIVER SIDE LOW REDUNDANT INDICATOR IGNITION 1
SRS INDICATOR

Supplemental Restraint System 9J-95
DTC53
DRIVER SIDE LOW HIGH RESISTANCE
STEP
ACTION YES
NO
1 WAS THE "SRS
DIAGNOSTIC SYSTEM CHECK" GOTOSTEP2. GO TO THE "SRS PERFORMED? DIAGNOSTIC
SYSTEM CHECK."
2
WHEN MEASUREMENTS ARE REQUESTED IN THIS CHART GO TO CHART A. GOTOSTEP3.
USE J-39200 DVM WITH CORRECT TERMINAL ADAPTER FROM J-35616-A. IGNITION SWITCH "OFF."
DISCONNECT DRIVER
AND PASSENGER INFLATOR
MODULES, YELLOW 2-WAY OR 4-WAY CONNECTORS
LOCATED AT THE TOP OF THE STEERING COLUMN AND
BEHIND THE 1/P COMPARTMENT DOOR ASSEMBLY.
DISCONNECT DERM.
CHECK FOR PROPER CONNECTION TO DERM AT TERMINAL "BB"
IF OK THEN MEASURE RESISTANCE FROM DERM HARNESS
CONNECTOR TERMINAL "BS• TO STEERING COLUMN
HARNESS CONNECTOR TERMINAL "1".
IS RESISTANCE
S.On OR LESS?
3 REPLACE SRS HARNESS. GO TO THE "SRS DIAGNOSTIC SYSTEM
RECONNECT
ALL SRS COMPONENTS, ENSURE ALL CHECK".
COMPONENTS ARE PROPERLY MOUNTED.
CLEAR SRS DIAGNOSTIC TROUBLE CODES.
REPEAT THE "SRS" DIAGNOSTIC SYSTEM CHECK."

Supplemental Restraint System 9J-97
DTC54
PASSENGER SIDE LOW HIGH RESISTANCE
STEP
ACTION YES NO
1 WAS THE "SRS
DIAGNOSTIC
SYSTEM CHECK" GOTOSTEP2. GO TO THE "SRS PERFORMED? DIAGNOSTIC
SYSTEM CHECK."
2
WHEN MEASUREMENTS ARE REQUESTED IN THIS CHART GO TO CHART A. GOTOSTEP3.
USE J 39200 DVM WITH CORRECT TERMINAL ADAPTER FROM J 35616-A. IGNITION SWITCH "OFF."
DISCONNECT DRIVER
AND PASSENGER INFLATOR
MODULES, YELLOW 2-WAY OR 4-WAY CONNECTORS LOCATED AT THE TOP OF THE STEERING COLUMN AND BEHIND THE 1/P COMPARTMENT DOOR ASSEMBLY. DISCONNECT DERM. CHECK FOR
PROPER CONNECTION TO DERM AT TERMINAL "B7".
IF
OK THEN MEASURE RESISTANCE FROM DERM HARNESS
CONNECTOR TERMINAL "B7" TO PASSENGER INFLATOR
MODULE HARNESS CONNECTOR TERMINAL "3".
IS
RESISTANCE S.OilOR LESS?
3 REPLACE
SRS HARNESSRECONNECT ALL SRS GO TO THE "SRS DIAGNOSTIC SYSTEM
COMPONENTS,
ENSURE ALL COMPONENTS ARE CHECK". PROPERLY MOUNTED. CLEAR SRS DIAGNOSTIC TROUBLE CODES. REPEAT THE "SRS DIAGNOSTIC SYSTEM CHECK."

Supplemental Restraint System 9J-99
DTC55
DERM INCOMPATIBILITY
STEP ACTION YES NO
1
WAS THE "SRS DIAGNOSTIC SYSTEM CHECK'' GOTOSTEP2. GO TO THE "SRS
PERFORMED? DIAGNOSTIC
SYSTEM CHECK."
2 WHEN MEASUREMENTS ARE REQUESTED IN THIS CHART
REPLACE DERM. GOTO STEP3
USE
J-39200 DVM WITH CORRECT TERMINAL ADAPTER REPEAT THE "SRS
FROM J-35616-A. DIAGNOSTIC
IGNITION SWITCH
"OFF"DISCONNECT DRIVER AND SYSTEM CHECK."
PASSENGER INFLATOR MODULES.
YELLOW 2-WAY OR 4-WAY CONNECTORS LOCATED AT THE TOP OF THE STEERING COLUMN AND BEHIND THE liP COMPARTMENT DOOR ASSEMBLY. DISCONNECT DERMCHECK FOR PROPER CONNECTION
TO DERM AT TERMINAL "AS". IF OK THEN MEASURE RESISTANCE ON DERM HARNESS CONNECTOR FROM TERMINAL "AS" TO TERMINAL "A1".
IS RESISTANCE 5.00 OR LESS?
3 MEASURE RESISTANCE ON DERM HARNESS CONNECTOR REPLACE DERM. GOTO STEP4.
FROM TERMINAL "AS" TO TERMINAL "A 12".
REPEAT THE "SRS
IS RESISTANCE 5.00 OR LESS? DIAGNOSTIC
SYSTEM CHECK."
4 ·REPLACE SRS HARNESS RECONNECT ALL SRS GO TO THE "SRS DIAGNOSTIC SYSTEM
COMPONENTS
ENSURE ALL COMPONENTS ARE CHECK". PROPERLY MOUNTED.
CLEAR SRS DIAGNOSTIC TROUBLE CODES. REPEAT THE "SRS DIAGNOSTIC SYSTEM CHECK."

Supplemental Restraint System 9J-103
DTC62
REDUNDANT SRS INDICATOR CIRCUIT FAILURE
STEP
ACTION YES NO
1 WAS THE "SRS
DIAGNOSTIC
SYSTEM CHECK'' GOTOSTEP2. GO TO THE "SRS PERFORMED? DIAGNOSTIC
SYSTEM CHECK."
2 IS DTC 61 ALSO SET? GOTO DTC61. GOTOSTEP3.
3
WHEN MEASUREMENTS ARE REQUESTED IN THIS CHART GOTOSTEP4. GOTOSTEP5.
USE J-39200 DVM WITH CORRECT TERMINAL ADAPTER FROM J-35616-A. IGNITION SWITCH "OFF."
DISCONNECT DRIVER
AND PASSENGER INFLATOR
MODULES, YELLOW 2-WAY OR 4-WAY CONNECTORS
LOCATED AT THE TOP OF THE STEERING COLUMN AND BEHIND THE 1/P COMPARTMENT DOOR ASSEMBLY.
DISCONNECT DERM. CHECK FOR PROPER CONNECTION
TO DERM AT TERMINAL "A2" AND AT TERMINAL "B2".
IF OK THEN MEASURE RESISTANCE ON DERM HARNESS
CONNECTOR FROM TERMINAL
"A2"
(GROUND) TO
TERMINAL "A 12" (GROUND). IS RESISTANCE 5.00 OR LESS?
4 IGNITION SWITCH "ON." GOTOSTEP6. GNITION SWITCH MEASURE
VOLTAGE ON DERM HARNESS CONNECTOR "OFF."
FROM TERMINAL "B2" TO TERMINAL "A12" (GROUND). GO TO CHART A.
IS VOLTAGE 1 VOLT OR LESS?
5 REPLACE SRS HARNESS. GOTOSTEP7.
6 IGNITION SWITCH "OFF."REPLACE SRS HARNESS. GOTOSTEP7.
7 RECONNECT ALL SRS COMPONENTS, ENSURE ALL GO TO THE "SRS DIAGNOSTIC SYSTEM
COMPONENTS ARE PROPERLY MOUNTED. CHECK".
CLEAR SRS DIAGNOSTIC TROUBLE CODES. REPEAT THE "SRS DIAGNOSTIC SYSTEM CHECK."

Supplemental Restraint System 9J-1 07
DTC81
DRIVER IGNITION DIODE OPEN
STEP
ACTION
YES NO
1 WAS THE "SRS
DIAGNOSTIC
SYSTEM CHECK" GOTOSTEP2. GO TO THE "SRS
PERFORMED? DIAGNOSTIC
SYSTEM CHECK."
2
WHEN MEASUREMENTS ARE REQUESTED IN THIS CHART GOTOSTEP3. GO TO STEPS.
USE
J-39200 DVM WITH CORRECT TERMINAL ADAPTER
FROM J-35616-A. IGNITION SWITCH "OFF."
DISCONNECT DRIVER
AND PASSENGER INFLATOR
MODULES, YELLOW 2-WAY OR 4-WAY CONNECTORS
LOCATED AT THE TOP OF THE STEERING COLUMN AND BEHIND THE 1/P COMPARTMENT DOOR ASSEMBLY.
DISCONNECT DUAL POLE ARMING SENSOR.
MEASURE RESISTANCE ON DUAL POLE ARMING SENSOR
HARNESS CONNECTOR FROM TERMINAL "5" TO TERMINAL
"6".
DOES J-39200 DISPLAY "OL"(INFINITE)?
3 MEASURE RESISTANCE ON DUAL POLE ARMING SENSOR GOTOSTEP4. GO TO STEPS.
HARNESS CONNECTOR FROM TERMINAL "4" TO TERMINAL
"6".
DOES J-39200 DISPLAY "OL"(INFINITE}?
4 RECONNECT DUAL POLE ARMING SENSOR. GOTOSTEP6. IGNITION SWITCH
DISCONNECT
DERM. "OFF."
IGNITION SWITCH "ON." GO
TO CHART A.
MEASURE VOLTAGE FROM DERM HARNESS CONNECTOR
TERMINAL "AS" TO TERMINAL "A1"(GROUND).
IS VOLTAGE 1 VOLT OR LESS?
5 REPLACE SRS HARNESS. GOTOSTEP7.
6 IGNITION SWITCH "OFF." GOTOSTEP7.
REPLACE DUAL POLE ARMING SENSOR.
7 RECONNECT ALL SRS COMPONENTS,
ENSURE ALL GO TO THE "SRS DIAGNOSTIC SYSTEM
COMPONENTS
ARE PROPERLY MOUNTED. CHECK". CLEAR SRS DIAGNOSTIC TROUBLE CODES.
REPEAT THE "SRS DIAGNOSTIC SYSTEM CHECK."

Supplemental Restraint System 9J-1 09
DTC82
PASSENGER IGNITION DIODE OPEN
STEP
ACTION YES NO
1 WAS THE "SRS
DIAGNOSTIC
SYSTEM
CHECK" GOTOSTEP2. GO TO THE "SRS PERFORMED? DIAGNOSTIC
SYSTEM CHECK."
2
WHEN MEASUREMENTS ARE REQUESTED IN THIS CHART GOTOSTEP3. GOTOSTEP5 USE J-39200 DVM WITH CORRECT TERMINAL ADAPTER
FROM J-35616-A. IGNITION SWITCH "OFF."
DISCONNECT DRIVER
AND PASSENGER INFLATOR
MODULES, YELLOW 2-WAY OR 4-WAY CONNECTORS
LOCATED AT THE TOP OF THE STEERING COLUMN AND BEHIND THE 1/P COMPARTMENT DOOR ASSEMBLY.
DISCONNECT DUAL POLE ARMING SENSOR.
MEASURE RESISTANCE ON DUAL POLE ARMING SENSOR
HARNESS CONNECTOR FROM TERMINAL "1" TO TERMINAL
"5". DOES J-39200 DISPLAY "OL"(INFINITE}?
3 MEASURE RESISTANCE ON DUAL POLE ARMING SENSOR GOTOSTEP4. GOTOSTEP5.
HARNESS CONNECTOR FROM TERMINAL "1" TO TERMINAL "4".
DOES J-39200 DISPLAY "OL"(INFINITE}?
4 RECONNECT DUAL POLE ARMING SENSOR. GOTOSTEP6. IGNITION SWITCH
DISCONNECT DERM. "OFF."
IGNITION SWITCH "ON." GO TO CHART A.
MEASURE VOLTAGE FROM DERM HARNESS CONNECTOR
TERMINAL "A6" TO TERMINAL "A1"(GROUND}.
IS VOLTAGE
1 VOLT OR LESS?
5 REPLACE SRS HARNESS. GOTOSTEP7.
6 IGNITION SWITCH "OFF." GOTOSTEP7. REPLACE DUAL POLE ARMING SENSOR.
7 RECONNECT ALL SRS COMPONENTS, ENSURE ALL GO TO THE "SRS DIAGNOSTIC SYSTEM
COMPONENTS ARE PROPERLY MOUNTED. CHECK".
CLEAR SRS DIAGNOSTIC TROUBLE CODES.
REPEAT THE "SRS DIAGNOSTIC SYSTEM CHECK."

Supplemental Restraint System 9J-111
HISTORY DTC 83
DRIVER RESERVE DIODE SHORTED
STEP
ACTION YES NO
1 WAS THE "SRS
DIAGNOSTIC SYSTEM CHECK" GOTOSTEP2. GO TO THE "SRS
PERFORMED? DIAGNOSTIC
SYSTEM CHECK."
2 WHEN
MEASUREMENTS ARE REQUESTED IN THIS CHART IGNITION SWITCH IGNITION
SWITCH
USE J-39200 DVM WITH CORRECT TERMINAL ADAPTER "OFF." "OFF."
FROM J-35616-A. GO TO CHART A. REPLACE DUAL
IGNITION
SWITCH "OFF." POLE
ARMING
DISCONNECT DRIVER
AND PASSENGER INFLATOR SENSOR.
MODULES, YELLOW 2-WAY OR 4-WAY CONNECTORS GOTOSTEP3.
LOCATED AT THE TOP OF THE STEERING COLUMN AND BEHIND THE liP COMPARTMENT DOOR ASSEMBLY.
DISCONNECT DERM. IGNITION SWITCH "ON."
MEASURE
VOLTAGE ON DERM HARNESS CONNECTOR
TERMINAL "A4" TO TERMINAL "A1"(GROUND). IS VOLTAGE 1 VOLT OR LESS?
3 RECONNECT ALL SRS COMPONENTS, ENSURE ALL GO TO THE "SRS DIAGNOSTIC SYSTEM
COMPONENTS
ARE PROPERLY MOUNTED. CHECK". CLEAR SRS DIAGNOSTIC TROUBLE CODES. REPEAT THE "SRS DIAGNOSTIC SYSTEM CHECK."

STEP
1
2
3
Supplemental Restraint System 9J-113
HI TORY DTC 84
PASSENGER RESERVE DIODE SHORTED
ACTION
YES NO
WAS
THE "SRS DIAGNOSTIC SYSTEM CHECK'' GOTOSTEP2. GO TO THE "SRS PERFORMED? DIAGNOSTIC
SYSTEM CHECK."
WHEN MEASUREMENTS ARE REQUESTED IN THIS CHART IGNITION SWITCH IGNITION
SWITCH
USE J-39200 DVM WITH CORRECT TERMINAL ADAPTER "OFF." "OFF."
FROM J-35616-A. GO TO CHART A. REPLACE DUAL IGNITION
SWITCH "OFF."
POLE ARMING
DISCONNECT DRIVER
AND PASSENGER INFLATOR SENSOR.
MODULES, YELLOW 2-WAY OR 4-WAY CONNECTORS GOTOSTEP3. LOCATED AT THE TOP OF THE STEERING COLUMN AND BEHIND THE 1/P COMPARTMENT DOOR ASSEMBLY.
DISCONNECT DERM.
IGNITION SWITCH "ON."
MEASURE VOLTAGE FROM DERM HARNESS CONNECTOR
TERMINAL "A3" TO TERMINAL "A1"(GROUND).
IS
VOLTAGE 1 VOLT OR LESS?
RECONNECT ALL SRS COMPONENTS,
ENSURE ALL GO TO THE "SRS DIAGNOSTIC SYSTEM
COMPONENTS ARE PROPERLY MOUNTED.
CHECK".
CLEAR SRS DIAGNOSTIC TROUBLE CODES. REPEAT THE "SRS DIAGNOSTIC SYSTEM CHECK."