KOER Self-Test

WARNING: This page is about a different car, the 1995 Mazda B4000, 1995 Mazda B3000, and 1995 Mazda B2300. However, it is still accessible from the selected car via links, so may be relevant.

Ensure engine is warmed to normal operating temperature. Turn ignition switch to OFF position. Ensure test equipment is properly attached. Program tester using the following steps:

Select vehicle and engine selection menu.
Select year, engine, model and any additional information requested by tester.
Select DIAGNOSTIC DATA LINK.
Select PCM - POWERTRAIN CTRL MODULE.
Select DIAGNOSTIC TEST MODE.
Select KOER ON-DEMAND SELF-TEST.
Start engine and allow to idle.
Follow operating instructions from tester menu.
Perform BRAKE ON/OFF (BOO) TEST and TRANSMISSION CONTROL SWITCH (TCS) TEST (if equipped).