Isuzu KB P190. Manual - part 1439

9A1-74  RESTRAINT CONTROL SYSTEM 

 

DTC B0063 (Flash Code 63) Battery Voltage Too Low 

 

Step Action 

Yes 

No 

1 

Was 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. Ignition switch “ON”. 

 4. Measure voltage on SRS control unit harness connector from 

terminal “1” to terminal “3” (ground). 

Is voltage on terminal “1” above 10.6V? 

Go to Step 5 

Go to Step 3 

3 

 1. Ignition switch is at “LOCK”. 

 2. Remove and inspect “SRS” fuse to the “Ignition 1”.  
Is fuse good? 

Go to Step 4 

Replace the "SRS" 

fuse. 

Go to Step 6 

4 

 1. Ignition switch is at “LOCK”. 

 2. Measure resistance from "SRS" fusel to SRS control unit 

harness connector terminal “1”. 

Is resistance 5.0 ohms or less? 

Inspect the 

Charging System. 

Refer to the 

"Engine Electrical" 

section. 

Go to Step 6 

Replace the SRS 

harness. 

Go to Step 6 

5 

 1. Remove the "SRS" fuse. 

 2. Measure the resistance on the SRS control unit harness 

connector as follow. 

  From terminals "1" to "3" and "23" (ground) (without the 

pretensioner) 

  From terminals "1" to "3" and "15" (ground) (with the 

pretensioner and the passenger air bag) 

  From terminals "1" to "3", "12" and "15" (ground) (with 

the pretensioner and without the passenger air bag) 

Does 5-8840-0366-0 display “OL” (Infinite)? 

Ignition switch is at 

“LOCK”. 

Replace the SRS 

control unit. 

Go to Step 6 

Replace SRS 

Harness. 

Go to Step 6 

6 

 1. Reconnect all the components and ensure all components 

are properly mounted. 

 2. Clear diagnostic trouble codes. 
Is this step finished? 

Go to the “SRS 

Diagnostic system 

Check” 

― 

 

RESTRAINT CONTROL SYSTEM  9A1-75 

 

DTC B0071 (Flash Code 71) SRS Control Unit Internal Fault 

 
 

 

 

RTW79ALF000301 

 

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. 
 

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 

Was 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” 

 
 

CAB  10-1 

SECTION 10 

CAB 

TABLE OF CONTENTS 

PAGE 

Windshield ......................................................................................................................... 10- 2 

Rear Window Assembly.................................................................................................... 10-  6 

Front Door Assembly ........................................................................................................ 10-  9 

Rear Door Assembly (Crew Cab) ..................................................................................... 10- 19 

Instrument Panel ............................................................................................................... 10- 27 

Floor Console .................................................................................................................... 10- 35 

Console Box (Without Floor Console)............................................................................. 10- 39 

Headlining .......................................................................................................................... 10- 40 

Interior Trim Panels........................................................................................................... 10- 45 

Fuel Filler Lid Opener Lever/Cable .................................................................................. 10- 56 

Quarter Glass (Extend Cab).............................................................................................. 10- 71 

Font Seat ............................................................................................................................ 10- 72 

Rear Seat (Crew Cab) ........................................................................................................ 10- 74 

Jump Seat (Extend Cab) ................................................................................................... 10- 75 

Front Seat Belt ................................................................................................................... 10- 76 

Rear Seat Belt (Crew Cab) ................................................................................................ 10- 80 

Rear Seat Belt (Extend Cab) ............................................................................................. 10- 84 

Front Wheel Extension (A type) ....................................................................................... 10- 87 

Front Wheel Extension (B type) ....................................................................................... 10- 88 

Rear Wheel Extension (A type)......................................................................................... 10- 89 

Rear Wheel Extension (B type)......................................................................................... 10- 90 

Tail Gate Assembly ........................................................................................................... 10- 91 

 

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ISUZU KB P190 2007