Cold Cranking Test
WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Refer to appropriate Wiring Information for complete starter wiring circuit diagrams.
- Fully charge and load-test the battery. Refer to DIAGNOSIS AND TESTING .
- Connect volt-ampere tester leads (1 and 2 to the battery terminals. Connect volt-ampere tester lead (3) around the positive battery cable. See instructions provided by manufacturer of volt-ampere tester being used.
- Place transmission in Park or Neutral with the parking brake set (depending on transmission application).
- If equipped with manual transmission, block clutch pedal in fully depressed position.
- Verify that all lamps and accessories are turned off.
- To prevent a gasoline engine from starting, remove Automatic ShutDown (ASD) relay. To prevent a diesel engine from starting, remove Fuel Pump Relay. Refer to appropriate Wiring Information for relay locations.WARNING:
Attempt to start engine a few times before proceeding with following step.
NOTE:A cold engine will increase starter current (amperage) draw reading, and reduce battery voltage reading.
- Rotate and hold ignition switch in Start position. Note cranking voltage and current (amperage) draw readings shown on volt-ampere tester.
- If voltage reads below 9.6 volts, refer to STARTER, DIAGNOSIS AND TESTING . If starter motor is OK, refer to appropriate Engine Diagnostic article. If starter motor is not OK, replace the starter motor. Refer to STARTER, REMOVAL .
- Refer to FEED CIRCUIT TEST if voltage reads above 9.6 volts and current (amperage) draw reads below specifications.
- Refer to FEED CIRCUIT TEST if voltage reads 12.5 volts or greater and starter motor does not turn or turns very slowly.