Check the Generator Output Under Load

: CHECK THE GENERATOR OUTPUT UNDER LOAD

G357528t33 : CHECK THE FUNCTION OF THE CHARGING SYSTEM WARNING LIGHT
1. Start the engine and allow to idle.

- Is the charging system warning light illuminated?

-> Yes
Check for DTC P0623.

-> No

G357528t34 : CHECK THE CHARGING SYSTEM OUTPUT UNDER LOAD (LOW VOLTAGE)
1. Turn the headlights and heated rear window to the ON position.
2. Raise the engine speed to between 2,800 rpm and 3,200 rpm and hold for ten seconds.
3. Whilst holding the engine rpm in the above range, measure the voltage between the battery positive terminal and GROUND.
4. Allow the engine to idle.

- Was the average battery voltage less than 12.85 volts?

-> Yes
-> No

G357528t1 : CHECK THE CHARGING SYSTEM OUTPUT UNDER LOAD (HIGH VOLTAGE)
1. Raise the engine speed to between 2,800 rpm and 3,200 rpm and hold for ten seconds.
2. Whilst holding the engine rpm in the above range, measure the voltage between the battery positive terminal and GROUND.
3. Allow the engine to idle.

- Was the average battery voltage greater than 15.25 volts?

-> Yes
INSTALL a new generator. CLEAR the DTC. TEST the system for normal operation.

-> No
Charging system output is within limits.

G357528t2 : CHECK THE CHARGING SYSTEM VOLTAGE AT THE GENERATOR CONNECTOR, PIN 01
1. Turn the headlights and heated rear window to the OFF position.
2. Turn the ignition switch to the OFF position.
3. Disconnect the generator three-way connector.
4. Connect a voltmeter between the generator, pin 01 and GROUND.
5. Start the engine.
6. Turn the headlights and heated rear window to the ON position.
7. Raise the engine speed to between 2,800 rpm and 3,200 rpm and hold for ten seconds.
8. Whilst holding the engine rpm in the above range, measure the voltage between the generator connector, pin 01 and GROUND.
9. Allow the engine to idle.

- Was the voltage between 11 and 16 volts?

-> Yes
Generator is within limits, suspect generator cables.

-> No
INSTALL a new generator. CLEAR the DTC. TEST the system for normal operation.