Suzuki Intruder VZR1800 Service Manual page 275

Is the voltage OK?
• W/G wire or B/Br wire open or shorted to
ground, or poor B, E or S connection.
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
YES
• Recheck each terminal and wire harness for
open circuit and poor connection.
• Replace the ECM with a known good one, and
inspect it again.
NO Replace the HO2 sensor with a new one.
7) After repairing the trouble, clear the DTC using SDS tool.
(#5-26)
Step 1
(When indicating C44/P0161 for HO2 sensor #2)
(When indicating C64/P0135 for HO2 sensor #1)
1) Turn the ignition switch OFF.
2) Check the HO2 sensor for loose or poor contacts.
If OK, then check the HO2 sensor resistance.
3) Disconnect the HO2 sensor coupler and measure the resis-
tance between terminals.
$ HO2 heater resistance: 4.0 – 5.5 Ω at 23 °C (73.4 °F)
NOTE:
* Temperature of the sensor affects resistance value largely.
* Make sure that the sensor heater is at correct temperature.
! 09900-25008: Multi-circuit tester set
% Tester knob indication: Resistance (Ω)
Is the voltage OK?
YES Go to Step 2.
NO Replace the HO2 sensor with a new one.
4) After repairing the trouble, clear the DTC using SDS tool.
(#5-26)
2
1
#1
1
(White – White)
FI SYSTEM DIAGNOSIS
ECM coupler (Harness side)
(Black) (Gray)
1
#2
5-81