TROUBLE SHOOTING
Note. See TROUBLE SHOOTING article in GENERAL INFORMATION.
ON-VEHICLE TESTING
| CAUTION | When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery. |
Note. Ensure battery is fully charged and in good condition before performing the following tests. If battery is not at (or near) a fully charged condition or if condition is questionable, substitute a known-good battery before proceeding.
BATTERY/STARTER LOAD TEST (ARBST TEST)
- Connect ARBST large Red tester cable to battery positive. Connect ARBST large Black tester cable to battery negative. Place Gray inductive current pick-up around battery positive cable. Ensure arrow on Gray inductive pick-up is pointing toward starter motor solenoid.
- Disable ignition system by disconnecting ignition module electrical connector. Press STARTER TEST button on ARBST tester. Position tester so display can be seen from driver's seat.
- When display says CRANK ENGINE, turn ignition to START position. Tester will continue to display CRANK ENGINE for 15 seconds.
- Tester display will display CRANKING AMPS, which shows average amperage drawn by starter during cranking. Amperage should be 80-120 amps at 40-80°F (5-27°C), 70-110 amps at greater than 120°F (50°C), and 90-130 amps at less than 40°F (5°C).
- Tester will display CRANKING VOLTAGE, which shows average battery voltage during cranking. If voltage is less than 9.5 volts, perform battery load test.
- Tester will display GOOD STARTER or BAD STARTER. If display reads BAD STARTER, ensure no engine or flywheel problems and replace starter motor.