For every task in Electrical/Electronic Systems, the
following safety requirement must be strictly enforced:
Comply with personal and environmental safety practices
associated with clothing; eye protection; hand tools; power equipment;
proper ventilation; and the handling, storage and disposal of chemicals
in accordance with local, state, and federal safety and environmental
regulations.
Note: The CNG/LPG Electrical/Electronic area is basically
a sub-set of the Automobile Electrical/Electronic area. Not all of the
Automobile tasks are required in the CNG or LPG task list. Task areas
that do not apply to the CNG/LPG program are indicated with an "N/A"
in the priority column. Tasks that have been modified significantly in
content or priority rating have been marked with "*" under the
priority rating.
| I. ELECTRICAL/ELECTRONIC SYSTEMS |
|
| A. General Electrical System
Diagnosis |
|
| 1. Use wiring diagrams during diagnosis of
electrical circuit problems. |
P-1 |
| 2. Check electrical circuits with a test
light; determine needed repairs. |
P-2 |
| 3. Check voltages and voltage drops in
electrical/electronic circuits using a digital multimeter (DMM);
determine needed repairs. |
P-1 |
| 4. Check current flow in
electrical/electronic circuits and components using an ammeter;
determine needed repairs. |
P-2 |
| 5. Check electrical circuits using jumper
wires; determine needed repairs. |
P-2 |
| 6. Find shorts, grounds, opens, and high
resistance problems in electrical/electronic circuits; determine needed
repairs. |
P-1 |
| 7. Measure and diagnose the cause(s) of
abnormal key-off battery drain; determine needed repairs. |
P-1 |
| 8. Inspect and test fusible links, circuit
breakers, and fuses; replace as needed. |
P-1 |
| 9. Inspect and test switches, connectors,
and wires of electrical/electronic circuits; repair or replace as
needed. |
P-1 |
| |
|
| I. ELECTRICAL/ELECTRONIC SYSTEMS |
|
| B. Battery Diagnosis and Service |
|
| 1. Perform battery state-of-charge test;
determine needed service. |
P-2 |
| 2. Perform battery capacity (load,
high-rate discharge) test; determine needed service. |
P-2 |
| 3. Maintain or restore electronic memory
functions. |
P-2 |
| 4. Inspect, clean, fill or replace
battery. |
P-2 |
| 5. Perform slow/fast battery charge. |
P-2 |
| 6. Inspect and clean battery cables,
connectors, clamps, and hold-downs; repair or replace as needed. |
P-1 |
| 7. Start a vehicle using jumper cables and
a battery or auxiliary power supply. |
P-1 |
| |
|
| I. ELECTRICAL/ELECTRONIC SYSTEMS |
|
| C. Starting System Diagnosis and
Repair |
|
| 1. Perform starter current draw and
circuit voltage drop test; determine needed repairs. |
P-1 |
| 2. Inspect and test starter relays and
solenoids; replace as needed. |
P-2 |
| 3. Remove and replace/reinstall starter. |
P-2 |
| 4. Perform starter free-running (bench)
tests; determine needed repairs. |
P-2 |
| |
|
| I. ELECTRICAL/ELECTRONIC SYSTEMS |
|
| D. Charging System Diagnosis and
Repair |
|
| 1. Diagnose charging system problems that
cause an undercharge, a no-charge or an overcharge condition. |
P-2 |
| 2. Inspect and adjust alternator drive
belts; replace as needed. |
P-2 |
| 3. Inspect and test voltage regulator;
replace as needed. |
P-2 |
| 4. Remove, inspect, and replace/reinstall
alternator. |
P-2 |
| 5. Disassemble, clean, inspect, and test
alternator components; replace as needed. |
P-2 |
| |
|
| I. ELECTRICAL/ELECTRONIC SYSTEMS |
|
| E. Lighting Systems Diagnosis and Repair |
N/A |
| |
|
| I. ELECTRICAL/ELECTRONIC SYSTEMS |
|
| F. Gauges, Warning Devices, and
Driver Information Systems Diagnosis and Repair |
|
| 1. Diagnose the cause of intermittent,
high, low or no gauge readings. |
P-2 |
| 2. Test gauge circuit voltage regulators
(limiters); replace as needed. |
P-3 |
| 3. Inspect and test gauges and gauge
sending units; replace as needed. |
P-2 |
| 4. Inspect and test
connectors, wires, and printed circuit boards of gauge circuits; repair
or replace as needed. |
P-3 |
| 5. Diagnose the cause of constant,
intermittent or no warning light and driver information system
operation. |
P-2 |
| 6. Diagnose the cause(s) of intermittent,
high, low or no readings on electronic digital instrument clusters. |
P-3 |
| 7. Inspect and test sensors, sending
units, connectors, and wires of electronic digital instrument circuits;
repair or replace as needed. |
P-3 |
| |
|
| I. ELECTRICAL/ELECTRONIC SYSTEMS |
|
| G. Horn and Wiper/Washer Diagnosis and Repair |
N/A |
| |
|
| I. ELECTRICAL/ELECTRONIC SYSTEMS |
|
| H. Accessories Diagnosis and Repair |
N/A |
