185
DTC 522698 Redundant Clock Failure
Step Action Value(s) Yes No
1
Did you perform the On-Board (OBD) System
Check?
-
Go to Step
(2)
Go to OBD
System
Check Sec-
tion
2
Ignition ON
DST (Diagnostic Scan Tool) connected in
System Data Mode
Clear system fault code
Ignition OFF
Ignition ON
Does DTC 522698 reset with the Ignition ON?
Go to Step
(3)
Intermittent
problem. Go
to Intermittent
section
3
Check ECU-B power and ground connec-
tions at M1, L1 and M2. Also check C001,
C005, C003 and C015.
Did the power and ground circuits check OK?
Go to Step
(4)
Repair the
circuit as ne-
cessary.
Refer to Wir-
ing Repairs in
Engine Elec-
trical.
4
Re-flash the ECM with the correct calibration
file
Repeat all in Step (2).
Does DTC 522698 still set?
Go to Step
(5)
Go to Step
(6)
5
Replace ECM
Is the replacement complete?
Go to Step
(5)
-
6
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 522698 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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