VL800K5 (’05-MODEL) 87
4) Disconnect the HO2 sensor coupler and ECM coupler.
5) Check the continuity between W/Bl wire
A and terminal
7.
6) Also, check the continuity between W/Bl wire
A and ground.
If sound of the continuity is not heard from the tester, the cir-
cuit condition is OK.
" 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
) Tester knob indication: Continuity test (()
Is the continuity OK?
7) After repairing the trouble, clear the DTC using SDS tool.
($Page 39)
Step 2 (When indicating C44/P0130:)
1) Warm up the engine enough.
2) Insert the needle pointed probes to the HO2 sensor coupler.
3) If OK, then disconnect the PAIR solenoid valve hose and
close the air inlet with a prop plug, measure the HO2 sensor
output voltage while holding the engine speed at 5 000 r/min.
! HO2 sensor output voltage at idle speed:
0.4 V and less (
+ W/Bl –
- B/Br)
HO2 sensor output voltage at 5 000 r/min:
0.6 V and more (
+ W/Bl –
- B/Br)
" 09900-25008: Multi-circuit tester set
09900-25009: Needle pointed probe set
& Tester knob indication: Voltage (')
Is the voltage OK?
4) After repairing the trouble, clear the DTC using SDS tool.
($Page 39)
YES Go to Step 2 (When indicating C44/P0130:).
NO W/Bl wire shorted to ground or W/Bl wire open.
1
1
Terminal side
YES
• W/Bl or B/Br wire open or shorted to ground, or
poor
7 or
D connection.
• If wire and connection are OK, intermittent trou-
ble or faulty ECM.
• 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.
2
V
Wire harness side
SAMPLE
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