Dtc P0123 Throttle Position (Tp) Sensor High Voltage - Daewoo CIELO EURO III Manual

7. A shorted 5 volt reference circuit will also set addi-
tional DTCs.

DTC P0123 Throttle Position (TP) Sensor High Voltage

Step
Perform an On-Board Diagnostic (EOBD) System
Check.
1
Is the system check performed?
1. Turn the ignition switch ON, with the engine OFF.
2. Install a scan tool.
2
Is the Throttle Position (TP) sensor voltage greater
than the specified value?
1. Turn the ignition switch ON, with the engine OFF.
2. Review the Freeze Frame data and note the
parameters.
3. Operate the vehicle within the Freeze Frame
3
conditions and Conditions for Setting The DTC as
noted.
Is the TP sensor voltage greater than the specified
value?
Disconnect the TP sensor electrical connector.
4
Is the TP sensor voltage less than the specified val-
ue?
Probe the TP sensor ground circuit, terminal B at the
TP sensor harness connector with a test light con-
5
nected to B+.
Does the test light illuminate?
Check the TP sensor signal circuit, terminal C for a
short to voltage and repair as necessary.
6
Is a repair necessary?
Check the 5 v reference circuit, terminal A for a
short to B+ and repair as necessary.
7
Is a repair necessary?
Check the TP sensor electrical connector for a poor
8 connection and repair the terminals as necessary.
Is a repair necessary?
Check the TP sensor ground circuit for an open and
repair as necessary.
9
Is a repair necessary?
1. Tur the ignition switch OFF.
10 2. Replace the TP sensor.
Is the action complete?
1. Tur the ignition switch OFF.
2. Replace the
11
engine control module (ECM).
Is the action complete?
DAEWOO T-154 BL2,3
Action
ENGINE CONTROLS 1F – 140
11. The replacement ECM must be programmed.
Refer to the latest Techline procedure for ECM
reprogramming.
Value
–
Go to Step 2
1 v Go to Step 4
3.9 v Go to Step 4
0.2 v Go to Step 5
–
Go to Step 7
–
Go to Step 12
–
Go to Step 12
–
Go to Step 12
–
Go to Step 12
–
Go to Step 12
–
Go to Step 12
Yes No
Go to
"On-Board
Diagnostic
System Check"
Go to Step 3
Go to Step 12
Go to Step 6
Go to Step 9
Go to Step 11
Go to Step 8
Go to Step 10
Go to Step 11
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