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Home >> Mercury >> 1994 >> Cougar/XR7 V8-281 4.6L SOHC >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Pinpoint Tests >> Z - Intermittent >> Z171

Z171

- Start and run engine.

- Observe the BASE TIMING LED.

- Is the BASE TIMING LED on continuously without any fault memory LEDs on?

Yes -- REPLACE ICM.

No -- GO to Z172. Z172

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