1A-234 Engine Control System (4HK1)
10
Replace the boost pressure sensor. Refer to Boost
Pressure Sensor in Section 1J Induction.
Did you complete the replacement?
—
Go to Step 15
—
11
Replace the intake throttle valve. Refer to Intake
Throttle Valve in Section 1B Engine Mechanical.
Did you complete the replacement?
—
Go to Step 15
—
12
Replace the CKP sensor. Refer to CKP Sensor in
Section 1B Engine Mechanical.
Did you complete the replacement?
—
Go to Step 15
—
13
Important:
Replacement exhaust differential
pressure sensor must be learned.
Replace the exhaust differential pressure sensor.
Refer to Exhaust Differential Pressure Sensor in
Section 1G Engine Exhaust.
Did you complete the replacement?
—
Go to Step 15
—
14
Important:
Replacement ECM must be
programmed and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement?
—
Go to Step 15
—
15
1.
Reconnect all previously disconnected
harness connector(s).
2.
Clear the DTCs with a scan tool.
3.
Turn OFF the ignition for 30 seconds.
4.
Start the engine.
5.
Operate the vehicle within the Conditions for
Running the DTC. You may also operate the
vehicle within the conditions that you
observed from the Freeze Frame/ Failure
Records.
Did the DTC fail this ignition?
—
Go to Step 3
Go to Step 16
16
Observe the DTC Information with a scan tool.
Are there any DTCs that you have not
diagnosed?
—
Go to DTC List
System OK
Step
Action
Value(s)
Yes
No
LG4HKED-WE-0871.book 234
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