Alternator and Regulator Circuit Troubleshooting
K24A1, K20A4 (KE, KG, KS models) engines
|1.||Be sure the battery connections are good, and that the battery is sufficiently charged.|
|2.||Raise the hoist to full height.|
|3.||Hook up the ammeter, 0-400 A, to the starter subharness.|
|4.||Lower the hoist.|
|5.||Hook up the voltmeter, 0-20 V (accurate within 0.1 V), to T101.|
|6.||Start the engine. Hold the engine at 3,000 rpm (min-1), with no load until the radiator fan comes on, then let it idle.|
|7.||Raise the engine speed to 2,000 rpm (min-1) and hold it there.|
|8.||Turn the headlights (high beam) on, and measure voltage at the under-hood fuse/relay box terminal.|
Is the voltage between 13.9 and 15.1 V?
YES - Go to 9.
|9.||Read the amperage at 13.5 V.|
NOTE: Adjust the voltage by turning the blower motor, rear window defogger, brake lights, etc. ON.
Is the amperage 60A or more?
YES - Alternator/regulator operation is OK. Go to Alternator Control Circuit Troubleshooting.n