Diagnostic Test Mode No. 3 (Control Testing)

Press test button 3 times to activate test mode No. 3. ECU responds by activating components in following order:

• Cooling fan at half speed for 15 seconds.
• Cooling fan at full speed for 15 seconds (15-second pause).
• Variable-flow intake manifold solenoid valve for 2 Hz for 5 seconds (5-second pause).
• Speedometer for 5 seconds by generating a speed signal for approximately 1500 RPM (5-second pause).

The sequence is repeated 3 times.