Diagnosis & Repair

For diagnosis and repair, see Fig 1 and Fig 2 . To check ECM inputs and outputs, see PIN VOLTAGE CHARTS article. To replace ECM, see REMOVAL & INSTALLATION - 4-CYLINDER article. To identify circuits referenced in testing, See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.

Fig 1: DTC P1600 Diagnostic Procedure (Step 1)

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Fig 2: DTC P1600 Diagnostic Procedure (Steps 2-3)

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