Symptom Troubleshooting Index

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Symptom	Diagnostic procedure	Also check for
Engine does not crank	Check for loose battery terminals or connections. Test the battery for a low state of charge (see BATTERY TEST ). Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ). Check for PGM-FI main relays (see POWER RELAY TEST ). Check the starter (see STARTER SYSTEM CIRCUIT TROUBLESHOOTING ). Check starter cut relay 1 and starter cut relay 2 (see POWER RELAY TEST ). Check the transmission range switch (see TRANSMISSION RANGE SWITCH TEST ). Check the ignition switch and its related circuits (see PARK PIN SWITCH TEST ).	Poor ground at G101 Seized engine
Engine cranks, but does not start	Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ). Check for IMMOBI status and function (see SYMPTOM TROUBLESHOOTING INFORMATION ). Check the fuel pressure (see FUEL PRESSURE TEST ). Check for a plugged or damaged fuel line (see FUEL LINE INSPECTION ). Check for a plugged fuel filter (see FUEL FILTER REPLACEMENT ). Check the throttle body (see THROTTLE BODY TEST ). Check for low engine compression (see ENGINE COMPRESSION INSPECTION ). Check for a damaged or broken timing belt (see TIMING BELT INSPECTION ). Do the PCM reset in the PGM-FI INSPECTION menu to cancel ALL INJECTORS STOP with the HDS.	Fuel level in tank Weak or fouled spark plugs
Engine is hard to start	Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ). Check the fuel pressure (see FUEL PRESSURE TEST ). Check for a plugged or damaged fuel line (see FUEL LINE INSPECTION ). Check for a plugged fuel filter (see FUEL FILTER REPLACEMENT ).	Weak or fouled spark plugs
Engine cranks slowly	Check for loose battery terminals or connections. Test the battery for a low state of charge (see BATTERY TEST ). Check the starter for binding (see STARTER OVERHAUL ). Check for excessive drag in the engine.