BATTERY/CHARGING SYSTEM
TROU
20-6
BATTERY
IS
DAMAGED OR WEAK
1.
Battery Test
Check the battery condition (page 20-8).
Is the battery in
good
condition?
YES - GO TO STEP
2.
NO - Faulty battery
2.
Current Leakage Test
Install the battery (page 20-7).
Check the battery current leakage (page 20-8).
Is the current leakage below
0.1
mA?
YES - GO TO STEP
4.
NO - GO TO STEP
3.
3.
Current Leakage Test Without Regulator/rectifier built
in
ECM
Disconnect the following connectors:
- ECM
3P
(Black) connector (page 4-49).
- ECM 5P connector (page 4-49).
Recheck the battery current leakage.
Is the current leakage below
0.1
mA?
YES - Faulty regulator/rectifier
in
ECM.
NO - • Shorted wire harness
• Faulty ignition switch
4.
Charging Voltage Inspection
Measure and record the battery voltage using a digital multimeter (page 20-8).
Start the engine.
Measure the charging voltage (page 20-9).
Compare the measurements to result of the following calculation.
STANDARD:Measured BV
<
Measured
CV<
15.5 V
• BV
=
Battery Voltage
• CV
=
Charging Voltage
Is the measured charging voltage within the standard voltage?
YES - Faulty battery.
NO - GO TO STEP
5.
5. Starter/charging Relay Operation Inspection
Check the starter/charging relay operation (page 20-10).
Is the operation normal?
YES - GO TO STEP
6.
NO
- Faulty starter/charging relay
6.
Starter/charging Relay Line Inspection
Install the starter/charging relay (page 6-8).
Disconnect the ECM 5P connector (page 4-49).
Turn the ignition switch ON and engine stop switch
"O".
Measure the voltage at the ECM connector (page 20-9).
STANDARD:Battery voltage
Does battery voltage exist?
YES - Replace the ECM with a new one and recheck.
NO - • Loose or poor contacts
of
related terminal
• Open circuit
in
the Red/black wire between the main relay and starter/charging relay
• Open circuit
in
the Red/yellow wire between the starter/charging relay and ECM
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