ENGINE (DIAGNOSTICS)(H4DO) > General Description
INSPECTION
Before performing diagnostics, check the following item which might affect engine problems.
1. BATTERY
1. Check the battery. Battery > INSPECTION">
2. Check the condition of the main and other fuses, and harnesses and connectors. Also check for proper grounding.
2. ENGINE GROUND
Make sure that the engine ground terminal has no contamination, corrosion or looseness and is properly connected to the engine.

Preparation tool
NoteDtc c1241 rear left abs sensor circuit
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC C1241 REAR LEFT ABS SENSOR CIRCUITDTC detecting condition:• Defective ABS wheel speed sensor (broken wire, input voltage too high)• Defective harness connectorTrouble symptom:&bul ...
Basic diagnostic procedure Procedure
INSTRUMENTATION/DRIVER INFO (DIAGNOSTICS) > Basic Diagnostic ProcedurePROCEDURE1. COMBINATION METERSTEPCHECKYESNO1.PERFORM CUSTOMER INTERVIEW.Using the Check List for Interview, ask the customer the condition of how trouble occurs. Check List for Interview > CHECK">Did you interview t ...
Removal
HVAC SYSTEM (HEATER, VENTILATOR AND A/C) > Hose and PipeREMOVAL1. LOW-PRESSURE HOSE1. Using the refrigerant recovery system, discharge refrigerant. Refrigerant Recovery Procedure > PROCEDURE">2. Remove the air intake boot. Air Intake Boot > REMOVAL">CAUTION:Move aside the ...