1A-116 Engine Control System (4HK1)
Circuit/ System Testing DTC P0118
5
1.
Test the signal circuit between the ECM (pin
84 of E-12) and the ECT sensor (pin 1 of E-
25) for the following conditions:
• A short to ground
• A short to the low reference circuit
2.
Repair the circuit(s) as necessary.
Did you find and correct the condition?
—
Go to Step 9
Go to Step 7
6
Replace the ECT sensor. Refer to ECT Sensor in
Section 1C Engine Cooling.
Did you complete the replacement?
—
Go to Step 9
—
7
1.
Turn OFF the ignition.
2.
Disconnect the ECM harness connector.
3.
Inspect connections at the harness connector
of the ECM (pins 84 and 109 of E-12) for
corrosion.
4.
Repair or clean the connection(s) as
necessary.
Did you find and correct the condition?
—
Go to Step 9
Go to Step 8
8
Important:
Replacement ECM must be
programmed and learned.
Replace the ECM. Refer to ECM Replacement.
Did you complete the replacement?
—
Go to Step 9
—
9
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 10
10
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
Step
Action
Value(s)
Yes
No
1
Did you perform the Diagnostic System Check
- Engine Controls?
—
Go to Step 2
Go to Diagnostic
System Check -
Engine Controls
2
1.
Install a scan tool.
2.
Turn OFF the ignition for 30 seconds.
3.
Start the engine.
4.
Monitor the DTC Information with a scan tool.
Is DTC P0697 also set?
—
Go to DTC P0697
Go to Step 3
LG4HKED-WE-0871.book 116
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