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Home >> Ford >> 2005 >> Escape Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Engine Controls - Pinpoint Tests - (Hybrid)) >> JB: Secondary Ignition >> Test Procedures

Test Procedures

WARNING: This page is about a different variant/trim than selected.
  1. JB1 VISUAL INSPECTION OF IGNITION SYSTEM 
    • Visually inspect the engine compartment to make sure all the coils are properly and securely connected.
    • Examine all the wiring harnesses and connectors for damaged, burned, or overheated insulation, and loose or broken conditions.
    • Make sure the vehicle battery is in good condition and all accessories are turned off.

    Is a problem indicated? 

    Yes No
    REPAIR as necessary. GO to  JB2.
  2. JB2 DTC P0301 THROUGH P0304: MISFIRE ON CYLINDERS 1 THROUGH 4 

    Are any of the above listed DTCs present? 

    Yes No
    GO to  JB3. GO to  JB4.
  3. JB3 CHECK FOR SPARK AT CYLINDER(S) INDICATED BY THE DTC(S) 
    • Key in OFF position.
    • Disconnect the ignition coil(s) from the spark plug(s).
    • Connect air gap spark tester 303-D037 (D81P-6666-A) or equivalent to a coil.
    • Crank the engine using the engine cranking diagnostic mode. Refer to DIAGNOSTIC MODES .
    • Observe the spark tester while cranking the engine.

    Is a bluish-white spark present? 

    Yes No
    Key in OFF position.
    GO to  JB5.    		 Key in OFF position.
    INSPECT the coil boot on the missing cylinder. INSTALL a new coil as necessary. INSPECT the spark plug on the missing cylinder. MEASURE the resistance of the spark plug. INSTALL a new spark plug if the resistance is lower than 2,000 ohms or higher than 20,000 ohms.
    GO to Pinpoint Test JF .
  4. JB4 CHECK FOR SPARK AT ALL CYLINDERS 
    • Key in OFF position.
    • Disconnect the ignition coil(s) from the spark plug(s).
    • Connect the air gap spark tester 303-D037 (D81P-6666-A) or its equivalent to the suspect coil.
    • Crank the engine using the engine cranking diagnostic mode. Refer to DIAGNOSTIC MODES .
    • Observe the spark tester at each cylinder while cranking the engine.

    Is a bluish-white spark consistent between all cylinders? 

    Yes No
    Key in OFF position.
    GO to  JB5.    		 Key in OFF position.
    INSPECT the coil boot on the missing cylinder. INSTALL a new coil as necessary. INSPECT the spark plug on the missing cylinder. MEASURE the resistance of the spark plug. INSTALL a new spark plug if the resistance is lower than 2,000 ohms or higher than 20,000 ohms.
    RECORD cylinder(s) with inconsistent spark.
    GO to Pinpoint Test JF .
  5. JB5 CHECK THE SPARK PLUGS 
    • Remove and inspect the plugs for damage, wear, carbon deposits, and proper plug gap.

    Are the plugs OK? 

    Yes No
    GO to  JB6. ADJUST the gap or INSTALL a new spark plug as necessary.
  6. JB6 CHECK THE SPARK PLUG RESISTANCE 
    • Measure the spark plug resistance.

    Is the resistance between 2,000 and 20,000 ohms? 

    Yes No
    GO to  JB7. INSTALL a new spark plug.
  7. JB7 TEST DIRECTION 

    Were you directed to this pinpoint test from  SYMPTOM CHARTS - HYBRID ESCAPE  ? 

    Yes No
    Concern is elsewhere. RETURN to SYMPTOM CHARTS - HYBRID ESCAPE for further direction. GO to  JB8.
  8. JB8 TEST DIRECTION 

    Were you directed to this pinpoint test from Pinpoint Test Step A6? 

    Yes No
    GO to  A7. The concern is intermittent.
    GO to Pinpoint Test Z .
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