Section
4
TROUBLESHOOTING
CHARTS
E. CODE 210 THROTTLE
POSITION
SENSOR
(TPS) SIGNAL
VOLTAGE
HIGH
NOTE— This chart is only to be used if:
1) All basic mechanical
checks and physical inspections
have been performed with no problem
found, and
2) Diagnosis of DDEC-II was started at step Start-1 (page 3-121) and you have now been referred here.
21-1
Multiple
Code Check
l Were there any other active codes
besides Code 21?
21-2
Sensor
Check
l Turn ignition off.
l Disconnect TPS connector.
l Turn ignition on.
l Read active codes.
21-3
Return
Circuit
Check
l Turn ignition off.
l Install a jumper wire between pins
A and B of the TPS harness
connector.
l Disconnect the vehicle harness
connector
at the ECM.
l Read resistance between sockets
02 and C3 on the vehicle harness
connector.
21-4
Check
TPS
Adjustment
l Reconnect
vehicle harness
connector and plug TPS back in.
l Hook-up DDR to the 12 pin DDL
connector and select Throttle
Sensor display.
l Read Throttle Counts at both no
throttle and full throttle.
TM 9-2320-363-20-1
RESULT
WHAT TO DO NEXT
No other
Go
to 21-2.
active codes.
Yes, any or all
Go
to VEH5V-1 (page 3-333).
of the following active
codes: 12.22.
Yes - but none
Go
to 21-2.
of the above.
Any code
Go
to 21-3.
except Code 21.
Code 21 (and any
Go
to 21-7.
other
codes).
Less than or
Go to
21-4.
equal to 5 ohms.
Greater than
Return line (ckt#952)
and/or
5 ohms or open.
signal (ckt#417)
is open.
Contact Direct Support.
Getting 20-30
counts at no throttle and
200-235 counts at full
throttle.
Not getting the above
reading.
Go to 21-6.
Replace throttle pedal,
page 4-428.
3-223
