Yamaha YZF-R125 Service Manual: Setting the normal mode

Yamaha YZF-R125 Service Manual / Electrical system / Fuel injection system / Diagnostic mode / Setting the normal mode

NOTE:

The engine speed, coolant temperature, and fault code, if detected, can be displayed on the LCD of the FI diagnostic tool when the tool is connected to the vehicle and is set to the normal mode.

1. Set the main switch to "OFF" and the engine stop switch to "".

2. Disconnect the self-diagnosis signal connector "1", and then connect the FI diagnostic tool "2" as shown.

3. Set the main switch to "ON" and start the engine.

NOTE:

The coolant temperature and engine speed appear on the LCD of the FI diagnostic tool.
"POWER" LED (green) comes on.
If a malfunction is detected in the system, the "WARNING" LED (orange) comes on.

4. Stop the engine.

NOTE:

If a malfunction is detected in the system, the fault code appears on the LCD of the FI diagnostic tool and the "WARNING" LED (orange) comes on.

5. Set the main switch to "OFF" to cancel the normal mode.

6. Disconnect the FI diagnostic tool and connect the self-diagnosis signal connector.

Diagnostic mode

It is possible to monitor the sensor output data or check the activation of actuators with the FI diagnostic tool connected to the vehicle and set to the normal mode or the diagnostic monitoring ...

Setting the diagnostic mode

1. Set the main switch to "OFF" and the engine stop switch to " ". 2. Disconnect the self-diagnosis signal connector "1", and then connect the FI diagnostic tool "2" as shown. 3. Disconnect ...

Other materials:

Checking the cylinder head
1. Eliminate: Combustion chamber carbon deposits (with a rounded scraper) NOTE: Do not use a sharp instrument to avoid damaging or scratching: Spark plug bore threads Valve seats 2. Check: Cylinder head Damage/scratches Replace. Cylinder head water jacket Min ...

Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon monoxide, a deadly gas. Breathing carbon monoxide can cause headaches, dizziness, drowsiness, nausea, confusion, and eventually death. Carbon Monoxide is a colorless, odorless, tasteless gas which may be present even if you do not see or smell any en ...

Removing the valves
The following procedure applies to all of the valves and related components. NOTE: Before removing the internal parts of the cylinder head (e.g., valves, valve springs, valve seats), make sure the valves properly seal. 1. Check: Valve sealing Leakage at the valve seat Check the valve ...