Isuzu KB P190. Manual - part 911

Battery 

Page 6D1-3–4 

 

• 

Clarify a procedure, 

• 

Present additional information for accomplishing a procedure, 

• 

Give insight into the reasons for performing a procedure in the recommended manner, and / or 

Present information that gives the technician the benefit of past experience in accomplishing a procedure with greater 
ease. 

1.2 

Battery Terminals and Cables 

The cables attached to the battery posts provide power and ground connections for the vehicle electrical system. These 
battery cables attach to the battery posts via nut-tightened terminals. The battery is held in position by a hold-down 
bracket and bolts. Refer to Figure 6D1-3 – 1. 

 

Figure 6D1-3 – 1 

Legend 

1 

Negative Battery Post 

2 

Negative Battery Terminal 

3 

Negative Battery Terminal Bolt 

4 

Negative Battery Terminal Nut 

5 

Positive Connection Cover 

6 

Battery Positive Cable Nut 

7 

Battery Positive Cable Assembly 

8 

Battery Fuse Box Nut 

9 

Battery Fuse Box Washer 

10 

Main Fuse Box Supply 

11 

Positive Battery Terminal 

12 

Positive Battery Terminal Nut 

13 

Positive Battery Terminal Bolt 

14 

Positive Battery Post 

15 

Battery Positive Cable Assembly 

16 

Battery Positive Cable Assembly 

17 

Battery Hold Down Bracket 

18 

Battery Hold Down Bolts 

19 

Battery Hold Down Bolt 

1.3 Battery 

Ratings 

There are two battery ratings to consider when replacing a battery, reserve capacity (RC) and cold cranking amps (CCA). 
Ensure the replacement battery meets or exceeds these rating specifications. 

Reserve Capacity 

The RC of a battery is the amount of time (measured in minutes) the vehicle will travel at night with minimum electrical 
load and no generator input. 

Battery 

Page 6D1-3–5 

 

This time is measured as the time taken for the battery voltage to reduce to 10.5 V from the following initial conditions: 

• 

a fully charged battery at 25

°C, and 

• 

discharged at a constant current of 25 A. 

Cold Cranking Amps 

The CCA rating indicates the ability of the battery to maintain enough voltage for ignition requirements while supplying 
engine cranking current for long enough to start the engine under severely cold conditions. 

The rating is the minimum amperage maintained when the engine is cranked for 30 seconds. The battery must maintain 
at least 7.2 V at 18

°C. 

Ratings 

A specification label on the top of the battery displays the original equipment part number. 

All vehicles are fitted with a low maintenance, 85 minute RC and 430 CCA battery. 

Battery 

Page 6D1-3–6 

 

2 Safety 

Precautions 

 

•  Battery fluid contains sulphuric acid, 

which can cause serious injury. Do not 
allow liquid from the battery to contact 
eyes or skin. If contact occurs, flush the 
area immediately with running water and 
contact a physician. 

•  Lead acid batteries produce explosive 

gases. Keep sparks, flames and lighted 
cigarettes away from the battery, 
especially when the battery is being 
charged. Failure to follow this warning 
could result in a battery explosion. 

•  Metal objects that touch a battery terminal 

can produce sparks that can cause 
serious burns. When working near a 
battery, take extra care with metal objects 
including tools and items of jewellery, 
especially rings and metal watchbands. 

 

Do not allow liquid from the battery to contact 
clothing or painted surfaces. If contact occurs, 
flush the area immediately with running water. 

When working with or near the battery, always: 

• 

Wear safety glasses and work gloves. 

• 

Remove items of jewellery such as rings and metal watchbands. 

• 

Ensure the ignition is switched off when connecting or disconnecting battery cables, battery charging equipment or 
battery jumper cables. Failing to do so can damage the vehicle electronic components. 

• 

Disconnect the negative battery cable before disconnecting the positive cable from the battery. Inversely, connect 
the positive battery cable to the battery before connecting the negative cable. This reduces the possibility of 
shorting the battery to ground while working near the positive connections. 

Battery 

Page 6D1-3–7 

 

3 Diagnosis 

3.1 Diagnostic 

Procedures 

Introduction 

This test is used to aid in diagnosing faults with the vehicle where the battery seems to be at fault. 

With the increased use of electronic sensors and computer control, the battery is much more than just a component used 
to start a car. Low battery voltage can: 

• 

affect the operation of the vehicle control modules and cause driveability problems, and 

• 

cause the control modules to set diagnostic trouble codes (DTCs). 

For example if a control module senses low battery voltage, it may increase fuel injector timing to increase engine rpm to 
increase the generator output. 

Therefore consider the state of charge of the battery any time a customer complains of a driveability related problem. 

Test Description 

The following numbers refer to the step numbers in the diagnostic table: 

1 

Checks the operator understands the safety precautions for working with batteries. 

2 

Checks if the vehicle is fitted with a battery of the correct specification. 

3 

Checks if the battery appears serviceable by performing the battery inspection procedure. 

4 

Checks if the battery loses charge over an extended period. If so the likely problem is excess current draw while 
the vehicles ignition is in the off position. 

5 

Checks the state of charge of the battery. 

6 

Checks if the battery is capable of delivering the required load by performing the load test procedure. 

Diagnostic Table Notes 

1 

For all wiring harness fault diagnosis, refer to 8A Electrical Body & Chassis. 

2 

For wiring harness repairs, refer to 8A Electrical Body & Chassis. 

3 

Refer to 6D1 – 3 Battery – V6. 

Diagnostic Table 

Step Action 

Yes 

No 

1 

Have you read and understood the safety precautions for working with 
batteries? 

Go to Step 2 

Refer to 2

 Safety 

Precautions 

2 

Check the battery fitted is the correct specification recommended for 
the vehicle? Refer to 5 

Specifications. 

Is the battery the correct specification? 

Go to Step 3 

Replace the battery 

with the correct 

specification 

3 

Perform the battery inspection, refer to 3.2  Battery Inspection. 

Does the battery appear serviceable? 

Go to Step 4 

Replace the battery, 

refer to 4.1

 Battery 

4 

Does the customer complain the battery loses charge if the engine is 
not started for an extended period? 

Preform the battery 

current draw test, 

refer to 3.5

 Battery 

Current Draw Test 

Go to Step 5