Honda Accord Quiz
Engine Control

Clearing ECM/PCM Memory

In this manual: Engine Control
Owner's Manual — 80Maintenance and Adjustments — 43Four-Cylinder Engines — 27V6 Engines — 34Engine General Overhaul and Major Repair — 35Cooling and Heating Systems — 29Fuel and Exhaust Systems — 21Engine Electrical Equipment — 23Engine Control — 315-speed manual transmission (MT) — 74-speed automatic transmission (AT) — 14Clutch and Drive Shafts — 22Brake System — 23Suspension and Steering — 31Body — 41Body Electrical Equipment — 36Electrical Circuit Diagrams — 11
~1min read

PROCEDURE

1. При занесении кода неисправности в память РСМ на приборном щитке автомобиля

1. When a trouble code is stored in the PCM memory, the Check Engine lamp on the instrument cluster illuminates. The code remains stored in the module until power is disconnected from it. To clear the module memory, turn the ignition off and remove the 7.5 A fuse No. 13 (BACK-UP) from the junction block located in the right side of the engine compartment for 10 to 15 seconds (refer to the Body Electrical section). If necessary, clearing the OBD system memory can be performed by an automotive service specialist.

Do not clear the OBD memory by disconnecting the negative battery cable, as this will erase the engine calibration settings and cause unstable engine idle speed for a period after the first start.
2. Make sure the system memory is cleared before installing new emission control components on the engine. If the fault memory is not cleared before starting the system after replacing a faulty sensor, the PCM will store a new trouble code. Clearing the memory allows the processor to adjust to the new parameters. During the first 10 to 20 minutes after the engine is first started, engine idle speed may be somewhat unstable.

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