Terminal and Connection Inspection

Disconnect the ECM connectors and inspect for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Reconnect the connectors.
Connect the GDS and go to "Current Data".
Monitor ECM values in Current Data, check and wiggle the harness(es), connector(s), and terminal(s).

Any change in the values indicates a poor connection. Was a connector problem found?

YES

Repair the connector. go to "Verification Of Repair " procedure.

Go to next step below.

Check Item	Specifications	Prerequisite condition	Terminal (+)	Terminal (-)
Back Up Voltage	Battery voltage	Disconnect ECM connector Ignition SW 'ON'	Hot at all times voltage of the ECM harness	Chassis GND

Are circuits remaining stable at battery voltage?

YES

Using a GDS, check ECM software version and upgrade as necessary. If version is the newest one, check ECM for contamination, deterioration, or damage. Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and then go to "Verification Of Repair " procedure.

If voltage fluctuates, check circuit for loose, bent or corroded terminals, Repair as necessary and go to "Verification Of Repair " procedure.

NOTE: It is necessary to perform the TPS adaptation procedure with GDS when the throttle body assembly or ECM is replaced.
■ TPS adaptation procedure
Turn the ignition switch 'OFF' and then 'ON' without cranking. Wait for 10 seconds under Prerequisite Condition. → Prerequisite Condition: Battery > 10V & Intake Air Temp. > 5.3°C (41.5°F) & 5.3°C (41.5°F) < Engine Coolant Temp. < 99.8°C (211.6°F)