| 1 |
Was the "On-Board Diagnostic (OBDII) System Check" performed? |
- |
Go to Step 2 |
Go to On-Board Diagnostic (OBD-II) System Check |
| 2 |
Was the "Electric Throttle Control (ETC) System Check" performed? |
- |
Go to Step 3 |
Go to On-Board Diagnostic (OBD-II) System Check |
| 3 |
- Perform a bulletin search.
- If a bulletin that addresses the symptom is found, correct the condition as instructed in the bulletin.
Was a bulletin found that addresses the symptom? |
- |
Verify repair |
Go to Step 4 |
| 4 |
Was a visual/physical check performed? |
- |
Go to Step 5 |
Go to VISUAL/PHYSICAL CHECK |
| 5 |
Check engine coolant temperature (ECT) sensor for shift in value. After 8 hours with the hood up and the engine not running, connect the Tech 2. With the ignition "ON" and the engine not running, compare engine coolant temperature to intake air temperature.
Are ECT and IAT within the specified value of each other? |
+/- 5°C (+/- 9°F) |
Go to Step 9 |
Go to Step 6 |
| 6 |
- Using a Tech 2, display the engine coolant temperature and note the value.
- Check the resistance of the engine coolant temperature sensor.
- Refer to DTC P0118 ENGINE COOLANT TEMPERATURE SENSOR TEMPERATURE VS. RESISTANCE CHART on DTC P0118 Diagnostic Support for resistance specifications.
Is the resistance value near the resistance for the temperature noted? |
- |
Go to Step 8 |
Go to Step 7 |
| 7 |
Replace the ECT sensor.
Is the action complete? |
- |
Verify repair |
- |
| 8 |
Locate and repair high resistance or poor connection in the ECT signal circuit or the ECT sensor ground.
Is the action complete? |
- |
Verify repair |
- |
| 9 |
- Check for a faulty, plugged, or incorrectly installed PCV valve.
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
Go to Step 10 |
| 10 |
- Check for water- or alcoholcontaminated fuel.
- Check for fuel valve level.
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
Go to Step 11 |
| 11 |
- Perform the procedure in Fuel System Check.(Low Pressure)
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
Go to Step 12 |
| 12 |
- Check for proper ignition voltage output with spark tester J 26792 (ST -125). Refer to IGNITION SYSTEM
for procedure.
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
Go to Step 13 |
| 13 |
- Remove spark plugs. Check for wet plugs, cracks, wear, improper gap, burned electrodes, or heavy deposits.
.
NOTE:
If spark plugs are gas or oil fouled, the cause of the fouling must be determined before replacing the spark plugs.
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
Go to Step 14 |
| 14 |
- Check for a loose ignition coil ground circuit.
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
Go to Step 15 |
| 15 |
- Remove the ignition coils and check the ignition coils for cracks or carbon tracking.
- If a problem is found, replace affected coils as necessary.
Was a problem found? |
- |
Verify repair |
Go to Step 16 |
| 16 |
- Check for the following engine mechanical problems (refer to ENGINE MECHANICAL (6VE1-DI - 3.5L)
:
- Low compression
- Leaking cylinder head gaskets
- Worn or incorrect camshaft
- Camshaft drive belt slipped or stripped
- VVT System
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
Go to Step 17 |
| 17 |
- Review all diagnostic procedures within this table.
- If all procedures have been completed and no malfunctions have been found, review/inspect the following:
- Visual/physical inspection
- Tech 2 data
- Freeze Frame data/Failure Records buffer
- All electrical connections within a suspected circuit and/or system.
- If a problem is found, repair as necessary.
Was a problem found? |
- |
Verify repair |
- |