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Home >> Merkur >> 1985 >> XR4Ti Automatic >> Repair and Diagnosis >> Engine Performance >> System >> EEC IV System >> Testing & Diagnosis >> Continuous Self-Test

Continuous Self-Test

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  1. Codes shown in this test are intermittent service codes. Unless instructed otherwise, DO NOT  disconnect any sensor with ignition turned on as this may cause a service code to be stored.
  2. Verify that all previous Self-Test procedures indicated a pass (code 11). If an On Demand Code is displayed during this test, repair it first, as some hard failures will set a code in CONTINUOUS Self-Test.
  3. Perform Key ON/Engine OFF Self-Test. When the first service code appears, exit Self-Test program by disconnecting STAR tester or by removing jumper wire from Self-Test input. Exiting Self-Test in this manner will clear all codes stored in continuous memory.
  4. Repeat Key ON/Engine OFF Self-Test. If code output is not 11-10-11, check Self-Test Input (STI) for short to ground. Repair short and repeat Key ON/Engine OFF Self-Test. If code output is 11-10-11, go to next step.
  5. Check list of Continuous/Memory codes that were recorded in Key ON/Engine OFF and Engine Running Self-Tests. Disregard any codes that have already been repaired. To confirm remaining codes, perform Continuous Monitor (Wiggle) Test.
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