code 22?

TYPHOOL7

TYPHOOL7

Post Hawk
i seem to throw this code while going like 76-80 sometimes, i check and its 22, the refrence is:
CODE 22 THROTTLE POSITION SENSOR (TPS) CIRCUIT (SIGNAL VOLTAGE
LOW) 4.3L TURBO (VIN Z) SYCLONE AND TYPHOON (PORT)
Circuit Description: The Throttle Position Sensor (TPS) provides a voltage signal
that changes relative to the throttle valve. Signal voltage will vary from less than
1.0 volt at idle to about 4.6 volts at wide open throttle (WOT). The TPS signal is
one of the most important inputs used by the ECM for fuel control and for many
of the ECM controlled outputs.
So how do i fix it if ive replaced the TPS 2x? TIA
 
turbodig

turbodig

Active member
Re: code 22?

TYPHOOL7 said:
i seem to throw this code while going like 76-80 sometimes, i check and its 22, the refrence is:
CODE 22 THROTTLE POSITION SENSOR (TPS) CIRCUIT (SIGNAL VOLTAGE
LOW) 4.3L TURBO (VIN Z) SYCLONE AND TYPHOON (PORT)
Circuit Description: The Throttle Position Sensor (TPS) provides a voltage signal
that changes relative to the throttle valve. Signal voltage will vary from less than
1.0 volt at idle to about 4.6 volts at wide open throttle (WOT). The TPS signal is
one of the most important inputs used by the ECM for fuel control and for many
of the ECM controlled outputs.
So how do i fix it if ive replaced the TPS 2x? TIA
Click to expand...


Fix your grounds/ECM connections.
 
AutoVation

AutoVation

Member
Re: code 22?

turbodig said:
Fix your grounds/ECM connections.
Click to expand...

Edit: I found a disconnected "connector" into the intake manifold. Problem solved. (end edit).

I'm getting this code now also. Which grounds/ECM connections?


Here's more info on the code:

CODE 22
THROTTLE POSITION SENSOR (TPS) CIRCUIT
(SIGNAL VOLTAGE LOW)
4.3L TURBO (VIN Z) SYCLONE (PORT)

Circuit Description:
The Throttle Position Sensor (TPS) provides a voltage signal that
changes rclative to the throttle valve. Signal voltage will vary from
less than 1.0 volt at idle to about 4.5 volts at wide open throttle
(WOT). The TPS signal is one of the most important inputs used by the
ECM for fuel control and for many of the ECM controlled outputs.

Test Description: Numbers below refer to circled numbers on the
diagnostic chart. 1. Code 22 will set if: ( Engine is running ( TPS
signal voltage is less than .2 volt for 4 seconds 2. Simulates Code
21: (high voltage). If ECM recognizes the high signal voltage the ECM
and wiring are OK. 3. With closed throttle, ignition "ON" or at idle,
voltage at "GF13" should be .36-.44 volt. If not, replace the TPS. See
Section "6E3-C2" for replacement procedures. 4. Simulates a high
signal voltage. Checks CKT 417 for an open.

Diagnostic Aids:
A "Scan" tool reads throttle position in volts. Voltage should
increase at a steady rate as throttle is moved toward WOT. Also some
"Scan" tools will read throttle angle 0%=closed throttle, l00% = WOT.
An open or short to ground in CKTs 416 or 417 will result in a Code
22. (Poor Connection or Damaged Harness.
Inspect ECM harness connectors for backed out
terminal "GF13," improper mating, broken
locks, improperly formed or damaged
terminals, poor terminal to wire connection,
and damaged harness.
( Intermittent Test. If connections and harness check OK, monitor TPS
voltage display while moving related connectors and wiring harness. If
the failure is induced, the display will change. This may help to
isolate the location of the malfunction. ( TPS Scaling. Observe TPS
voltage display while depressing accelerator pedal with engine stopped
and ignition "ON." Display should vary from closed throttle TPS
voltage when throttle was closed, to over 4.5 volts (4500 mV) when
throttle is held at wide open throttle position.
 
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