warning ISUZU KB P190 2007 Workshop Repair Manual
[x] Cancel search | Manufacturer: ISUZU, Model Year: 2007, Model line: KB P190, Model: ISUZU KB P190 2007Pages: 6020, PDF Size: 70.23 MB
Page 5747 of 6020
RESTRAINT CONTROL SYSTEM 9A1-65
DTC B0052 (Flash Code 52) Pretensioner Squib Circuit Activated (Crash)
WARNING: DURING SERVICE PROCEDURES. BE VERY CAREFUL WHEN HANDLING A SRS CONROL UNIT.
NEVER STRIKE OR JAR THE SRS CONTROL UNIT. NEVER POWER UP THE SRS WHEN THE SRS CONTROL
UNIT IS NOT RIGIDLY ATTACHED TO THE VEHICLE. ALL SRS CONTROL UNIT AND MOUNTING BRACKET
FASTENERS MUST BE CAREFULLY TORQUED AND THE ARROW MUST BE POINTING TOWARD THE FRONT
OF THE VEHICLE TO ENSURE PROPER OPERATION OF THE SRS. THE SRS CONTROL UNIT COULD BE
ACTIVATED AND CAUSE DEPLOYMENT AND RESULTING IN PERSONAL INJURY.
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 Ignition switch “LOCK”.
Have the pretensioner seat belt assemblies been deployed? Replace
components and perform
inspections as directed in
“repairs and inspections
required after an accident” in this section.
clear diagnostic trouble codes. Repeat “SRS
Diagnostic System Check” Go to Step 3
3
Inspect the front of the vehicle and undercarriage for signs of
impact.
W ere signs of impact found? Replace
components and perform
inspections as directed in
“Repairs and Inspections
Required After An Accident” in this section.
Clear diagnostic trouble codes. Repeat “SRS
Diagnostic System Check” Ignition switch is at
“LOCK”.
Replace SRS control unit.
Reconnect all SRS system
components, ensure all
components are
properly mounted. Repeat “SRS
Diagnostic System Check”
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ISUZU KB P190 2007
Page 5749 of 6020
RESTRAINT CONTROL SYSTEM 9A1-67
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. Ignition switch is at “LOCK”.
2. Disconnect the SRS control unit.
3. Inspect the SRS control unit harness for the following condition.
z W ithout the pretensioner:
- The wiring harness is not connected on terminal "23"
- The wiring harness is connected on terminals "12", "15" and "26"
z W ith the pretensioner:
- The wiring harness is not connected on terminal "15"
- The wiring harness is connected on terminals "12", "23" and "26"
z W ithout the pretensioner and without the passenger air
bag:
- The wiring harness is not connected on terminals "12" and "15"
- The wiring harness is connected on terminals "23" and "26"
W as a problem found? Replace the SRS
control unit harness.
Go to Step 3 Replace the SRS
control unit.
Go to Step 3
3 1. Reconnect all components and ensure all components are
properly mounted.
2. Clear the diagnostic trouble codes.
Is this step finished? Go to the “SRS
Diagnostic System Check” ―
DTC Will Set When
z W ithout the pretensioner:
Terminals "12", "15" and "26" are shorted to
ground.
Terminal "23" is open (harness is not connected).
z W ith the pretensioner:
Terminals "12", "23" and "26" are shorted to
ground.
Terminal "15" is open (harness is not connected).
z W ith the pretensioner and without the passenge
r
air bag:
Terminals "23" and "26" are shorted to ground.
Terminals "12" and "15" are open (harness is not
connected).
It is DTC set, if non genuine SRS control unit is installed
with the SRS harness genuine part, or incase o
f
terminal "12", "15", "23" and "26" are abnormal
condition with the SRS control unit genuine part.
Action Taken
The SRS control unit turns “ON" the “SRS" warning
lamp and sets a DTC B0055.
But if there is abnormal condition with the SRS control
unit and/or SRS harness, the DTC is not set.
DTC Will Clear When
DTC B0055 can be cleared only by using the scan tool.
Diagnostic Aids
Ensure that terminal "12" is shorted to ground on the
SRS harness. Terminal "15", "23" and "26" are open
circuit.
DTC B0055 (Flash Code 55) Vehicle Variant Missing
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ISUZU KB P190 2007
Page 5750 of 6020
9A1-68 RESTRAINT CONTROL SYSTEM
DTC B0061 (Flash Code 61) Warning Lamp Circuit Failure
RTW 79ALF000301
Circuit Description
W hen the ignition switch is first turned “ON”, “Ignition 1”
voltage is applied from the “METER” fuse to the “SRS”
warning lamp which is connected to “SRS" warning
lamp, terminal “4”. The “SRS” fuse applies system
voltage to the “Ignition 1” inputs, terminal “1”. The SRS
control unit responds by flashing the “SRS” warning
lamp 7 times. The SRS control unit monitors the “SRS
W arning Lamp" terminal "4" for conditions that are
incorrect for the commanded state of the "SRS" warning
lamp.
For example, a failure condition exists if the SRS
control unit detects low voltage when the "SRS" warning
lamp is commanded OFF, or high voltage when the
"SRS" warning lamp is commanded ON. If the SRS
control unit detects an improper voltage on the “SRS
W arning Lamp" terminal "4", DTC B0061 will set.
DTC Will Set When
The SRS control unit try to turn "ON" the "SRS" warning
lamp but the battery voltage is not supplied to terminal
"4".
The SRS control unit try to turn "OFF" the "SRS"
warning lamp but the battery voltage is supplied to
terminal "4".
Action Taken
If circuits of the “SRS" warning lamp power supply and
ground are normal condition, the SRS control unit turns
“ON” the “SRS” warning lamp and sets a diagnostic
trouble code.
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ISUZU KB P190 2007
Page 5751 of 6020
RESTRAINT CONTROL SYSTEM 9A1-69
DTC Will Clear When
The malfunction is no longer occurring and the ignition
is turned to “LOCK”.
DTC Chart Test Description
Number(s) below refer to step number(s) on the
diagnostic chart:
4. This test determines whether the SRS control unit is malfunctioning
5. This test determines whether the malfunction is in the “SRS W arning Lamp” circuit.
7. This test determines whether the SRS control unit is malfunctioning
8. This test determines whether the malfunction is in
the “SRS W arning Lamp” circuit.
9. This test determines whether the malfunction is in the power supply circuit of the "SRS" warning lamp.
Diagnostic Aids
The warning lamp turns “ON" without relation SRS
control unit, and turn the warning lamp “OFF" due to
electric current to SRS control unit.
DTC B0061 (Flash Code 61) Warning Lamp Circuit Failure
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. Ignition switch is at “ON”.
2. Note the “SRS” warning lamp.
Does the “SRS” warning lamp flash seven 7 times? Repeat the “SRS
Diagnostic System Check” Go to Step 3
3 Did the “SRS” warning lamp come “ON” steady at Step 2? Go to Step 4
Go to Step 6
4
1. Ignition switch is at “LOCK”.
2. Disconnect the SRS control unit.
3. Ignition switch is at “ON”.
4. Note the “SRS” warning lamp.
Does the “SRS” warning lamp go “OFF”? Ignition switch is at
“LOCK”.
Replace the SRS control unit .
Go to Step 10 Go to Step 5
5
Measure the resistance on the SRS control unit harness
connector as follow.
z From terminals "4" to "3" and "23" (ground) (without the
pretensioner)
z From terminals "4" to "3" and "15" (ground) (with the
pretensioner and the passenger air bag)
z From terminals "4" to "3", "12" and "15" (ground) (with
the pretensioner and without the passenger air bag)
Does 5-8840-0366-0 display “OL” (infinite)? Service instrument
meter cluster.
Install instrument meter cluster.
Go to Step 10 Replace the SRS
harness.
Go to Step 10
6
1. Ignition switch is at “LOCK”.
2. Remove and inspect “METER” fuse to the “SRS” warning lamp.
Is the fuse good? Go to Step 7 Replace the
"METER" fuse.
Go to Step 10
7 1. Disconnect the SRS control unit.
2. Ignition switch is at “ON”.
3. Measure the voltage on the SRS control unit harness connector from terminal “4” to terminal “3” (ground).
Is system voltage present on terminal “4”? Ignition switch is at
“LOCK”.
Replace the SRS control unit.
Go to Step 10
Go to Step 8
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ISUZU KB P190 2007
Page 5752 of 6020
9A1-70 RESTRAINT CONTROL SYSTEM
Step Action Yes No
8 1. Ignition switch is at “LOCK”.
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? Go to Step 9 Replace the SRS
harness.
Go to Step 10
9 1. Disconnect the instrument meter cluster harness connector.
2. Measure the resistance from the "METER" fuse to the instrument meter cluster harness connector "SRS" warning
lamp power supply circuit terminal.
Is the resistance 5.0 ohms or less? Service instrument
meter cluster.
Install instrument meter cluster.
Go to Step 10 Replace the "SRS"
warning lamp power supply
circuit harness.
Go to Step 10
10 1. Reconnect all components and ensure all components are
properly mounted.
2. Clear the diagnostic trouble codes.
Is this step finished? Go to the “SRS
Diagnostic System Check” ―
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ISUZU KB P190 2007
Page 5753 of 6020
RESTRAINT CONTROL SYSTEM 9A1-71
DTC B0062 (Flash Code 62) Battery Voltage Too High
RTW 79ALF000301
Circuit Description
W hen the ignition switch is turned “ON", the SRS
control unit judge to "Ignition 1" voltage is normal or not.
DTC Will Set When
The "Ignition 1" voltage is above 21.4V.
Action Taken
The SRS control unit turns “ON” the “SRS” warning
lamp and sets a diagnostic trouble code.
DTC Will Clear When
The “Ignition 1" voltage comes to below 16.5V.
DTC Chart Test Description
Number(s) below refer to circled number(s) on the
diagnostic chart.
2. This test determines whether the SRS control unit is malfunctioning.
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Page 5755 of 6020
RESTRAINT CONTROL SYSTEM 9A1-73
DTC B0063 (Flash Code 63) Battery Voltage Too Low
RTW 79ALF000301
Circuit Description
W hen the ignition switch is turned “ON", the SRS
control unit judge to "Ignition 1" voltage is normal or not.
DTC Will Set When
The "Ignition 1" voltage is below 7.2V.
Action Taken
The SRS control unit turns “ON” the “SRS” warning
lamp and sets a diagnostic trouble code.
DTC Will Clear When
The “Ignition 1" voltage comes to above 10.6V.
DTC Chart Test Description
Number(s) below refer to circled number(s) on the
diagnostic chart.
4. This test determines whether the malfunction is in the “Ignition 1” circuit.
5. This test determines whether the malfunction is in the “Ignition 1” circuit.
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ISUZU KB P190 2007
Page 5757 of 6020
RESTRAINT CONTROL SYSTEM 9A1-75
DTC B0071 (Flash Code 71) SRS Control Unit Internal Fault
RTW 79ALF000301
Circuit Description
DTC B0071 is an indication of a potential internal SRS
control unit malfunction and will set if any of the
following conditions are detected:
1) Microprocessor energy reverse time failure.
2) EEPROM read / write failure.
3) ROM check sum.
4) Calibration check sum fault.
5) Inflators reserve voltage low.
6) Inflators electronic sensor active signal not detected during commanded deployment.
7) QSDD (High-side/Low-side) FET failure.
8) Frontal accelerometer failure.
9) Phase lock loop lost lock.
10) QSDD communication fault.
DTC Will Set When
Any of the above indicated malfunctions are detected by
the SRS control unit. The malfunctions described
above are tested mainly during “Continuous Monitoring”
and some are run each ignition cycle.
Action Taken
SRS control unit turns “ON” the “SRS” warning lamp
and sets a diagnostic trouble code.
DTC Will Clear When
The SRS control unit is replaced.
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Page 5758 of 6020
9A1-76 RESTRAINT CONTROL SYSTEM
DTC B0071 (Flash Code 71) SRS Control Unit Internal Fault
WARNING: DURING SERVICE PROCEDURES. BE VERY CAREFUL WHEN HANDLING A SRS CONTROL UNIT.
NEVER STRIKE OR JAR THE SRS CONTROL UNIT. NEVER POWER UP THE SRS WHEN THE SRS CONTROL
UNIT IS NOT RIGIDLY ATTACHED TO THE VEHICLE. ALL SRS CONTROL UNIT AND MOUNTING BRACKET
FASTENERS MUST BE CAREFULLY TORQUED AND THE ARROW MUST BE POINTING TOWARD THE FRONT
OF THE VEHICLE TO ENSURE PROPER OPERATION OF THE SRS. THE SRS CONTROL UNIT COULD BE
ACTIVATED WHEN POWERED WHILE NOT RIGIDLY ATTACHED TO THE VEHICLE WHICH COULD CAUSE
DEPLOYMENT AND RESULT IN PERSONAL INJURY.
CAUTION: If DTC B0071 can not be cleared by Tech2, it is necessary to replace the SRS control unit.
Step Action Yes No
1 W as the “SRS Diagnostic System Check” performed?
Ignition switch
“LOCK”.
Replace SRS control unit.
Repeat the “SRS
Diagnostic System Check” Go to the “SRS
Diagnostic System Check”
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Page 5831 of 6020
CAB 10-73
Important Operations - Removal
1. Front Cover • W hile pushing the cover downward, pull it.
4. Seat Assembly • Disconnect the seat belt warning harness connecto
r
(Driver’s side only).
RUW 7A0SH000201
5. Buckle Side Seat Belt/Center Seat Belt
• Remove the seat belt fixing screw and the warning
harness connector clip (Bucket seat model).
• Remove the seat belt fixing screws and the warning
harness connector clip (Bench seat model).
Important Operations – Installation
5. Buckle Side Seat Belt/Center Seat Belt • Tighten the seat belt fixing screws to the specified
torque.
Torque N ⋅m (kgf ⋅m/lb ⋅ft)
40 (4.1 / 30)
3. Bolt: Seat Assembly to Floor Panel
Torque N ⋅m (kgf ⋅m/lb ⋅ft)
40 (4.1 / 30)
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