197
Step Action Value(s) Yes No
5
With C017 disconnected, measure the resis-
tance from pin 6 to pin 1 of the throttle body.
Push the throttle plate to the fully closed posi-
tion, and then observe the resistance sweep
while moving the throttle to the fully open
position
Repeat the test across pin 6 to pin 4.
Is the resistance change smooth with no ob-
served glitches, and does the resistance vary
from 800 to 1500 for pin 6 to 1 and from 1400
to 300 for pin 6 to 4 as the throttle is moved from
fully closed to fully open?
Go to Step
(6)
Replace the
throttle body
assembly. Go
to Step (7)
6
Key OFF, disconnect ECU-B
Measure the resistance from C017 pin 1 to
ECU-B pin G3
Measure the resistance from C017 pin 4 to
ECU-B pin D3
Is the resistance less than 5?
NOTE: Verify
that there are
no codes for
the 5 volt
supply before
proceeding.
Replace the
ECU. Go to
Step (7)
Repair the
circuit as ne-
cessary. Refer
to Wire Har-
ness Repair.
Go to Step
(7).
7
Remove all test equipment except the moni-
tor.
Using the monitor, reset the adaptive learn.
Connect any disconnected components, fus-
es, etc.
Using the monitor, clear DTC information
from the ECM.
Turn the ignition OFF and wait 30 seconds.
Start the engine and operate the vehicle to
full operating temperature.
Observe the MIL.
Observe engine performance and driveability.
After operating the engine within the test pa-
rameters of code, check for any stored
codes.
Does the engine operate normally with no stored
codes?
System OK.
Go to On-
Board Diag-
nostics
System
Check/Malfunc
tion Indicator
lamp.
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