Diagnosis And Testing: Battery

1. Use Ford approved battery test equipment.
   • Midtronics MDX-650 or P-300/P-600/490/1050
   • Midtronics GRX-3590 or 3000
   • Midtronics EXP-890

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

PINPOINT TEST A: BATTERY CONDITION TEST 

1. Normal Operation and Fault Conditions 

   Battery condition is determined by measuring battery terminal voltage after a specific discharge current is applied for a specified time period.

   Possible Sources 

   • Battery
   • Wiring, terminals or connectors

   Visual Inspection and Pre-checks 

   • Inspect wiring, terminals and connectors.
   • Inspect the battery.
   • Inspect battery mounting
   • Inspect high current BJB connections.

2. A1 TEST THE BATTERY CONDITION
   
   
   NOTE: Failure to fully charge the battery before retesting may cause false readings.
   • Using the Diagnostic Battery Charger and the battery cables removed from the battery, verify the battery condition.

   Is the battery OK? 

   Yes	RETURN the battery to service.

   No	If the analyzer reads REPLACE BATTERY or REPLACE-BAD CELL, INSTALL a new battery. REFER to: Battery