Symptom Troubleshooting Index

WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

TROUBLESHOOTING CHART

Symptom	Diagnostic procedure	Also check for
Engine does not start (does not crank)	Check for loose battery terminals or connections. Test the battery for a low charge (see BATTERY 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 or wire (see TEST ).	Poor ground at G101
Engine cranks, but does not start	Check for PGM-FI DTCs. 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 PRESSURE REGULATOR 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.
Engine is hard to start	Check for PGM-FI DTCs. 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 PRESSURE REGULATOR REPLACEMENT ).
Engine cranks slowly	Check for loose battery terminals or connections. Test the battery for a low charge (see BATTERY TEST ). Check the starter for binding (see STARTER OVERHAUL ). Check for excessive drag in the engine.
Multi-information display warning CHECK STARTING SYSTEM	Check for PGM-FI DTCs (see GENERAL TROUBLESHOOTING INFORMATION ).