Troubleshooting Guide
The charging system troubleshooting guide is shown in the following steps.
- STEP 1
.
Q: Is the battery in good condition? (Refer to Chassis Electrical - Battery - On-vehicle Service - BATTERY CHECK .)
YES : Go to Step 2.
NO : Charge or replace the battery.
- STEP 2
.
Q: Is the generator drive belt in good condition? [Refer to General - Maintenance Service - DRIVE BELTS (FOR GENERATOR AND POWER STEERING OIL PUMP) (CHECK CONDITION) ].
YES : Go to Step 3.
NO : Adjust the belt tension or replace the belt.
- STEP 3
.
Q: Does the generator malfunction light come on when the ignition switch is turned on?
YES : Go to Step 4.
NO : Check the ignition switch. (Refer to Chassis Electrical - Ignition Switch - Ignition Switch - INSPECTION ).
Check the generator malfunction light and its related circuits.
Check the generator [Refer to Charging System - Generator Assembly - GENERATOR ASSEMBLY INSPECTION ].
- STEP 4
.
Q: Does the generator malfunction light go out after starting the engine?
YES : Go to Step 5.
NO : Check the generator [Refer to Charging System - Generator Assembly - GENERATOR ASSEMBLY INSPECTION ].
- STEP 5
.
Q: Is an oscilloscope available?
YES : Go to Step 6.
NO : Go to Step 7.
- STEP 6
.
Q: Does the oscilloscope show a normal wave pattern?
(Refer to Charging System - On-vehicle Service - WAVE PATTERN CHECK USING AN OSCILLOSCOPE .)
YES : Go to Step 7.
NO : Check the generator [Refer to Charging System - Generator Assembly - GENERATOR ASSEMBLY INSPECTION ].
- STEP 7
.
- Engine: 2, 500 r/min
- Headlight: ON (high beam)
- Voltage between generator terminal B and the positive battery terminal
OK: 0.5 V or less
- Voltage between the negative battery terminal and generator body
OK: 0.5 V or less
Q: Are the generator output line and ground line in good condition?
YES : Go to Step 8.
NO : Check the generator output line and ground line.
- STEP 8
.
Q: Is the output current normal? (Refer to Charging System - On-vehicle Service - OUTPUT CURRENT TEST .)
YES : Go to Step 9.
NO : Check the generator [Refer to Charging System - Generator Assembly - GENERATOR ASSEMBLY INSPECTION ].
- STEP 9
.
Q: Is the regulated voltage normal? (Refer to Charging System - On-vehicle Service - REGULATED VOLTAGE TEST .)
YES : Go to Step 10.
NO : Check the generator [Refer to Charging System - Generator Assembly - GENERATOR ASSEMBLY INSPECTION ].
- STEP 10
.
Q: Is the voltage drop in the generator output line normal?
YES : Generator is normal. Check other systems.
NO : Check the output line.