Next
Step 11
check Post-Catalytic oxygen sensor signal circuit.
FE02-5356b
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D
Post-catalytic Oxygen Sensor Harness
Connector EO03
ECM Harness Connector EO01
(a)
Turn the ignition switch to "OFF" position.
(b)
Disconnect the oxygen sensor wiring harness connector
EO03.
(c)
Disconnect ECM harness connector EO01.
(d)
Measure resistance between oxygen sensor wiring harness
connector EO03 terminal B and ECM harness connector
terminal No.30. Check whether the circuit is open. otherwise,
repair the faulty part.
(e)
Measure resistance between oxygen sensor wiring harness
connector EO03 terminal B and a reliable ground. Check
whether the circuit is short to ground. otherwise, repair the
faulty part.
(f)
Measure voltage between oxygen sensor wiring harness
connector EO03 terminal B and a reliable ground. Check
whether the circuit is short to power supply. otherwise, repair
the faulty part.
Test Items
Standard Value
Resistance between EO03 (B) and EO01
(30)
Less than 1 Ω
Resistance between EO03 (B) and a reliable
ground
10 kΩ or higher
Voltage between EO03 (B) and a reliable
ground
0 V
normal
Step 12
Check Post-Catalytic oxygen sensor ground circuit.
2-684
Control System JL4G15-D
Engine
EC718/EC718RV EC715/EC715RV 10/2009
Summary of Contents for EC715 2009
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