EN(H6DO)(diag)-153
ENGINE (DIAGNOSTICS)
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
Step
Check
Yes
No
1
CHECK HARNESS BETWEEN ECM AND
FRONT OXYGEN (A/F) SENSOR CONNEC-
TOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from ECM and
front oxygen (A/F) sensor connector.
3) Measure the resistance of harness
between ECM and chassis ground.
Connector & terminal
(B134) No. 27 — Chassis ground:
(B134) No. 34 — Chassis ground:
Is the resistance more than 1
M
Ω?
Replace the front
oxygen (A/F) sen-
sor. <Ref. to
FU(H6DO)-30,
Front Oxygen (A/
F) Sensor.>
Repair the ground
short circuit of har-
ness between
ECM and front
oxygen (A/F) sen-
sor connector.