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NEVADA 750
Lambda check
Example value: Open loop / Closed loop
Closed loop indicates that the control unit is using the lambda probe signal to keep the combustion as
close as possible to the stoichiometric value.
NAVIGATOR: ELECTRICAL ERRORS
Lambda probe - Generic error.
Error cause
Troubleshooting
Lambda probe heating - Lambda probe that does not get into cycle
Error cause
Troubleshooting
Injector
Function
To supply the correct amount of petrol at the right
timing.
Operation / Operating principle
Injector coil is excited for the petrol passage to
open.
Level in electrical circuit diagram:Coils and in-
jectors
Location:
Downloaded from
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•
If shorted to positive: excessive voltage (battery voltage) has been detected at PIN 8 or PIN
2 of the control unit connector.
•
shorted to positive: with key set to ON, disconnect the sensor connector and measure PIN
1 voltage (pink/yellow cable) on the cable harness side: if there is voltage (5 or 12 V), restore
cable harness; if there is no voltage, measure voltage at PIN 2 on the cable harness side
(green/yellow cable); and if there is voltage, restore cable harness; if there is no voltage,
replace the lambda probe. After the cable harness has been restored or the probe replaced,
the lambda probe error will remain active until an operation cycle is completed
•
Short circuit/open circuit: lambda probe that does not get into cycle.
•
Disconnect the connector and check that the heater resistance (on 2 white cables) is ap-
proximately 13 Ohm (at room temperature). If it is OK, check if there is ground connection
on PIN 4 (blue cable) on the cable harness side; if OK, check if there is battery voltage on
PIN 3 (red/brown cable) on the cable harness side for 2 seconds upon "key ON" and after-
wards when the engine is started.
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Electrical system
ELE SYS - 47
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