2007 ISUZU KB P190 Workshop Repair Manual

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Page 5697 of 6020

ISUZU KB P190 2007 Workshop Repair Manual RESTRAINT CONTROL SYSTEM 9A1-15

Chart C “SRS” Warning Lamp Does Not Come “ON” Steady

Step Action Yes No
1
1. W hen measurements are requested in this chart, use a 5-
8840-0366-0DM

RESTRAINT CONTROL SYSTEM 9A1-15

Chart C “SRS” Warning Lamp Does Not Come “ON” Steady

Step Action Yes No
1
1. W hen measurements are requested in this chart, use a 5-
8840-0366-0DMM with a correct terminal adapter from 5-
8840-0385-0.
2. Ignition switch is at “LOCK”.
3. Remove and inspect the “METER” fuse to the “SRS” warning lamp.
Is the fuse good? Go to Step 2 Go to Step 7
2

1. Ignition switch is at “LOCK”.
2. Disconnect the SRS coil and passenger air bag assembly
yellow connector which is located at the base of the steering
column and behind the glove box assembly.
3. Disconnect the SRS control unit.
4. Ignition switch is “ON”.
5. Measure the voltage on the SRS control unit harness connector from the terminal “4” to terminal “3” (ground).
Is system voltage present on terminal “4”? Go to Step 4 Go to Step 3
3

1. Ignition switch is at “LOCK”.
2. Remove instrument meter cluster.
3. Check for proper connection to instrument cluster at the SRS warning lamp circuit terminal.
4. If ok, then remove and inspect the “AIR BAG” bulb.
Is the bulb good? Go to Step 5 Replace bulb.
Go to Step 6
4
1. Ignition switch is at “LOCK”.
2. Disconnect instrument meter cluster harness connector.
3. Ignition switch is “ON”.
4. Measure the voltage on the SRS control unit harness
connector from terminal “4” to terminal “3” (ground).
Is the voltage 1 volt or less? Go to Chart A Replace SRS
harness.
Go to Step 6
5
1. Install the bulb.
2. Measure the resistance from the instrument meter cluster
harness connector SRS warning lamp circuit terminal to the
SRS control unit harness connector terminal “4”.
Is the resistance 5.0 ohms or less? Service instrument
meter cluster.
Install instrument meter cluster. Go to Step 6 Replace SRS
harness.
Go to Step 6
6 Reconnect all SRS components and ensure all components are
properly mounted.
Is this step finished? Repeat the “SRS
Diagnostic System Check” Go to Step 6
7
Perform chart C.
Is this step finished? Go to Step 8 Go to Step 1
8

1. Replace the “METER” fuse.
2. Ignition switch is “ON”. W ait 10 Seconds then ignition switch
is at “LOCK”.
3. Remove and inspect the “METER” fuse.
Is the fuse good? Install “METER”
fuse.
Go to Step 10 Go to Step 9

BACK TO CHAPTER INDEX
TO MODEL INDEX
ISUZU KB P190 2007

Page 5698 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 9A1-16 RESTRAINT CONTROL SYSTEM

Step Action Yes No
9
1. Disconnect the SRS coil and the passenger air bag assembly
yellow connectors located at the base of the steering column
and behind t

Page 5699 of 6020

ISUZU KB P190 2007 Workshop Repair Manual RESTRAINT CONTROL SYSTEM 9A1-17

DTC B0015 (Flash Code 15) Passenger Air Bag Squib Circuit High Resistance

RTW 79ALF000301
Circuit Description
W hen the ignition switch is turned to “O

Page 5700 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 9A1-18 RESTRAINT CONTROL SYSTEM

DTC Will Clear When
Resistance value returns specified resistance value.

DTC Chart Test Description
Number(s) below refer to step number(s) on the
diagnosti

9A1-18 RESTRAINT CONTROL SYSTEM

DTC Will Clear When
Resistance value returns specified resistance value.

DTC Chart Test Description
Number(s) below refer to step number(s) on the
diagnostic chart:
2. This test determines whether the malfunction is in
the SRS control unit.
3. This test verifies proper connection of the yello
w
connector.
4. This test checks for proper contact and/or corrosion
of the yellow connector terminals.
5. This test checks for a malfunctioning passenger ai
r
bag assembly.
6. This test determines whether the malfunction is due
to a high resistance in the wiring.
Diagnostic Aids

An intermittent condition is likely to be caused by a poor
connection at the passenger air bag assembly harness
connector terminals “1” and “2”, SRS control unit
terminal “17” and “16”, or a poor wire to terminal
connection in circuits “Passenger Bag High” and
“Passenger Bag Low”. The test for this diagnostic
trouble code is only run while the “SRS” warning lamp is
performing the bulb check. W hen the scan tool “Clea
r
Codes” command is issued and the malfunction is still
present, the DTC will not reappear until the next ignition
cycle.

DTC B0015 (Flash Code 15) Passenger Air Bag Squib Circuit High Resistance

Step Action Yes No
1 W as the “SRS Diagnostic System Check” Performed?
Go to Step 2 Go to The “SRS
Diagnostic System Check”
2
1. Check the passenger air bag squib circuit for open.
2. If a problem is found, repair as necessary.
W as a problem found? Verify repair Go to Step 3
3

1. Ignition switch is at “LOCK”.
2. Make sure the passenger air bag assembly yellow connector
located behind the glove box assembly is seated properly.
Is the yellow connector connected properly? Go to Step 4 Seat passenger Air
Bag assembly
yellow connector properly.
Go to Step 7
4
1. Disconnect and inspect the passenger air bag assembly
yellow connector located behind the glove box assembly.
2. If OK, reconnect the passenger air bag assembly connector.
3. Ignition switch is “ON”.
Is DTC B0015 current? Go to Step 5 Go to Step 7
5

1. Ignition switch is at “LOCK”.
2. Disconnect the SRS coil and passenger air bag assembly,
yellow connector located at the base of the steering column
and behind the glove box assembly.
3. Connect a 5-8840-2421-0 SRS driver / passenger load tool
and appropriate adapters to the SRS coil and passenger air
bag assembly harness connectors.
4. Ignition switch is “ON”.
Is DTC B0015 Current? Go to Step 6 Ignition switch
“LOCK”.
Replace the
passenger air bag assembly.
Go to Step 7

BACK TO CHAPTER INDEX TO MODEL INDEX
ISUZU KB P190 2007

Page 5701 of 6020

ISUZU KB P190 2007 Workshop Repair Manual RESTRAINT CONTROL SYSTEM 9A1-19

Step Action Yes No
6
1. Ignition switch is at “LOCK”.
2. There has been an increase in the total circuit resistance of
the passenger inflator deploymen

Page 5702 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 9A1-20 RESTRAINT CONTROL SYSTEM

DTC B0016 (Flash Code 16) Passenger Air Bag Squib Circuit Low Resistance

RTW 79ALF000301
Circuit Description
W hen the ignition switch is turned to “O

Page 5703 of 6020

ISUZU KB P190 2007 Workshop Repair Manual RESTRAINT CONTROL SYSTEM 9A1-21

DTC Will Clear When
Resistance value returns to specified resistance value.

DTC Chart Test Description
Number(s) below refer to step number(s) on the
diagnost

RESTRAINT CONTROL SYSTEM 9A1-21

DTC Will Clear When
Resistance value returns to specified resistance value.

DTC Chart Test Description
Number(s) below refer to step number(s) on the
diagnostic chart:
2. This test determines whether the malfunction is in
the SRS control unit.
3. This test verifies connection of the yellow connector.
4. This test checks for proper operation of the shorting
clip on the yellow connector.
5. This test checks for a malfunctioning passenger ai
r
bag assembly.
6. This test determines whether the malfunction is due
to shortening in the wiring.
Diagnostic Aids

An intermittent condition is likely to be caused by a short
between circuits “Passenger Bag High” and “Passenge
r
Bag Low” or a malfunctioning shorting clip on the
passenger air bag assembly which would require
replacement of the air bag assembly. The test for this
diagnostic trouble code is only run while the “SRS”
warning lamp is performing the bulb check. W hen the
scan tool “Clear Codes” command is issued and the
malfunction is still present, the DTC will not reappea
r
until the next ignition cycle.

DTC B0016 (Flash Code 16) Passenger Air Bag Squib Circuit Low Resistance

Step Action Yes No
1 W as the “SRS Diagnostic System Check” performed?
Go to Step 2 Repeat the “SRS
Diagnostic System Check”
2
1. Check the passenger air bag squib circuit for short to voltage
or short to ground.
2. If a problem is found, repair as necessary.
W as a problem found? Verify repair Go to Step 3
3

1. Ignition switch is at “LOCK”.
2. Make sure the passenger air bag assembly yellow connector
located behind the glove box assembly is seated properly.
Is the yellow connector connected properly? Go to Step 4 Seat passenger air
bag assembly
yellow connector properly.
Go to Step 7
4
1. Disconnect and inspect the passenger air bag assembly
yellow connector located behind the glove box assembly.
2. If ok, reconnect the passenger air bag assembly connector.
3. Ignition switch is “ON”.
Is DTC B0016 Current? Go to Step 5 Go to Step 7
5

1. Ignition switch is at “LOCK”.
2. Disconnect the SRS coil and passenger air bag assembly
yellow connector located at the base of the steering column
and behind the glove box assembly.
3. Connect 5-8840-2421-0 SRS driver/passenger load tool and
appropriate adapters to the SRS coil and the passenger air
bag assembly harness connectors.
4. Ignition switch is “ON”.
Is DTC B0016 current? Go to Step 6 Ignition switch
“LOCK”.
Replace the
passenger air bag assembly.
Go to Step 7

BACK TO CHAPTER INDEX TO MODEL INDEX
ISUZU KB P190 2007

Page 5704 of 6020

ISUZU KB P190 2007 Workshop Repair Manual 9A1-22 RESTRAINT CONTROL SYSTEM

Step Action Yes No
6
1. Ignition switch is at “LOCK”.
2. There has been a decrease in the total circuit resistance of
the passenger inflator deploymen

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