5
3.4 – Bosch LSU 4.9 probe warning
Bosch LSU 4.9 is a wideband lambda probe which does not require any specific calibration procedure, it auto-calibrates on a reference
electrical current which guarantees the same performance over time.
When in use the probe becomes very hot
(700-800 °C or 1291-1472 °F), so
do not
touch it or place it in contact with inflammable material
or fuel.
Warning
: misuse can cause shocks, burnings or explosions.
Do not
clean the probe with solvents or additives, pay attention when cleaning vehicles with exposed engines, to avoid detergent
pollution.
Never
switch the engine on, if the probe is installed but not connected to a working controller LCU-One CAN. If a probe were to be exposed
to exhaust gas, when not heated, it would be permanently damaged. Wait for the probe to be ready, you will read the following values on
the dash (Lambda = 1.6 or AFR = 23.31) depending on your display set up.
•
during warmup – left image – Lambda value is 1 (14.56 AFR)
•
when the probe is ready – right image – Lambda value with the engine off is 1.60 (free air) (23.31 AFR).
The LCU One with Bosch LSU 4.9 detects Lambda values in a 0.6 – 1.6 range (9.5 – 23.3 AFR).
