208
Step Action Value(s) Yes No
8
Using a DVOM measure the resistance of the
HEGO heater (sensor side) between pins C and
D.
Does the DVOM show a resistance value greater
than 25 Ohms?
Greater than
25 Ohms
Go to Step
(9)
Go to Step
(5)
9
Replace the HEGO sensor
Is the replacement complete?
Go to Step
(10)
-
10
Remove all test equipment except the DST.
Connect any disconnected components, fus-
es, etc.
Using the DST clear DTC information from
the ECM.
Turn the Ignition OFF and wait 30 seconds.
Start the engine and run to full operating
temperature
Observe the MIL
Observe engine performance.
After operating the engine within the test pa-
rameters of DTC 522735 check for any
stored codes.
Does the engine operate normally with no stored
codes?
System OK
Go to OBD
System
Check
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