Dtc P0406 Exhaust Gas Recirculation (Egr) Pintle Position Sensor High Voltage - Daewoo CIELO EURO III Manual

1F – 318 ENGINE CONTROLS
small amount of material may cause a DTC
P0401 to set.
12. The replacement ECM must be repro-
grammed. Refer to the latest Techline procedure for
ECM reprogramming.
13. Check the terminals for being backed out, improper-
ly formed or damaged, and for poor tension.
14. Clearing DTCs is a very important step for this diag-
nostic. The clearing function allows the EGR valve

DTC P0406 Exhaust Gas Recirculation (EGR) Pintle Position Sensor High Voltage

Step
Perform an On-Board Diagnostic (EOBD) System
Check.
1
Is the system check complete?
1. Turn the ignition switch ON, with the engine OFF.
2. Install a scan tool.
3. Command the Exhaust Gas Recirculation (EGR)
2
valve to the specified values.
Does the Actual EGR Position follow the Desired
EGR Position?
1. Turn the ignition switch ON with the engine OFF.
2. Disconnect the EGR valve electrical connector.
3. With a Digital Voltmeter (DVM) connected to
3
ground, probe the 5 v reference circuit at terminal
D to the EGR valve.
Does the DVM read near the specified value?
Jumper the 5 volt reference circuit to the signal cir-
cuit at terminals D and C.
4
Does the Actual EGR Position display the specified
value?
1. Connect the test light to B+.
5 2. Probe the 5 v reference circuit to the EGR valve.
Does the test light illuminate?
Check the 5 v reference and signal circuit for a poor
connection or proper terminal tension and repair as
6
necessary.
Is a repair necessary?
1. Connect the test light to ground.
2. Probe the signal circuit at terminal C to the
7
EGR valve wiring harness connector.
Does the test light illuminate?
Check for a short to ground in the EGR valve 5 v
reference circuit and repair as necessary.
8
Is a repair necessary?
Check for an open in the EGR 5 v reference circuit
and repair as necessary.
9
Is a repair necessary?
Action
to relearn a new pintle position as the old pintle posi-
tion was inaccurate due to the failure that caused
the DTC. The DTC must be cleared with the ignition
ON, engine OFF or when the engine is idling. If the
ECM sees a EGR command, the new pintle
will not be learned.
15. If no malfunctions have been found at this point and
no additional DTCs were set, refer to Diagnostic
Aids for additional checks and information.
Value
–
Go to Step 2
25%, 50%,
Go to Step 14
75%, 100%
5 v Go to Step 4
100% Go to Step 6
–
Go to Step 8
–
Go to Step 14
–
Go to Step 11
–
Go to Step 14
–
Go to Step 14
Yes No
Go to
"On-Board
Diagnostic
System Check"
Go to Step 3
Go to Step 5
Go to Step 7
Go to Step 9
Go to Step 10
Go to Step 13
Go to Step 12
Go to Step 13
DAEWOO T-154 BL2,3