Spectrum 3.0L GM - Page 155

155
DTC 522617 Throttle Failed to Fully Open/Close
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
Section
2
 Ignition ON
 DST (Diagnostic Scan Tool) connected in
data stream mode.
 Clear DTC 522617
 Start the engine
Does DTC 522617 re-set?
Go to Step
(3)
Intermittent
problem. Go
to Intermittent
section
3
Check the electronic throttle for a foreign object
in the throttle bore or damaged throttle bore or
fly assembly.
Did you find damage or a foreign object in the
bore?
Remove the
foreign object
or replace the
throttle if
damage is
found. Go to
Step (17)
Go to Step (4)
4
 Ignition OFF
 Disconnect electronic throttle connector
C017
 Disconnect ECM wire harness connector
ECU-B
 Using a DVOM check for continuity between
all electronic throttle connector pins and en-
gine ground
Does the DVOM show continuity?
Repair the
shorted to
ground TPS
circuit as ne-
cessary.
Refer to Wir-
ing Repairs
Go to Step (5)
5
Using a DVOM check for continuity between
electronic throttle connector pin 1 and ECU-B
connector pin G3.
Does the DVOM show continuity?
Go to Step
(6)
Repair the
open circuit as
necessary.
Refer to Wir-
ing Repairs.
6
Using a DVOM check for continuity between
electronic throttle connector pin 2 1 and ECU-B
connector pin G2.
Does the DVOM show continuity?
Go to Step
(7)
Repair the
open circuit as
necessary.
Refer to Wir-
ing Repairs
7
Using a DVOM check for continuity between
electronic throttle connector pin 3 and ECU-B
connector pin M3.
Does the DVOM show continuity?
Go to Step
(8)
Repair the
open circuit as
necessary.
Refer to Wir-
ing Repairs
8
Using a DVOM check for continuity between
electronic throttle connector pin 4 and ECU-B
connector pin D3.
Does the DVOM show continuity?
Go to Step
(9)
Repair the
shorted TPS
circuit to
ground as ne-
cessary. Refer
to Wiring Re-
pairs.