CAUTION:
- To prevent damage to the alternator (GEN), do not make jumper wire connections except as directed.
- Do not allow any metal object to come in contact with the housing and the internal diode cooling fins with key on or off. A short circuit will result and burn out the diodes.
- Battery posts and cable clamps must be clean and tight for accurate meter indications.
- Turn OFF all lamps and electrical components.
- Place the vehicle in transmission range NEUTRAL and apply the parking brake.
- Carry out the Load Test and No-Load Test.
- Switch the Battery Tester to the ammeter function.
- Connect the positive and negative leads of the Battery Tester to the corresponding battery terminals.
- Connect the current probe to the alternator B+ output lead.
- With the engine running at 2000 rpm alternator output should be greater than as shown on the graph.
- Switch the Battery Tester to the voltmeter function.
- Connect the voltmeter positive lead to the alternator B+ terminal and the negative lead to ground.
- Turn all electrical accessories off.
- With the engine running at 2,000 rpm, check the alternator output voltage. The voltage should be between 13.0 and 15.0 volts.