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Home >> Merkur >> 1987 >> XR4Ti Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 2.3L Turbo EEC IV Tests >> Quick Test >> Key On/Engine Running (KOER) Self-Test >> Code Output

Code Output

  1. Deactivate SELF-TEST (disconnect jumper wire). Start engine and run it at 2000 RPM for 2 minutes to warm up EGO sensor. Turn engine off and wait 10 seconds. Insert jumper to activate SELF-TEST. DO NOT  depress throttle during test unless a Dynamic Response code occurs.
  2. Start engine. The engine ID code will be displayed. Run test. If Dynamic Response code one (10 with STAR tester) occurs, briefly accelerate engine to wide open throttle. The ENGINE RUNNING SELF-TEST service codes will then be displayed. Observe and record all codes.
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