| On-vehicle Inspection |
| 1. | Check for DTCs.
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| 2. | Check if sparks occur.
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| 3. | If sparks do not occur, perform the following test.
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| 4. | Using a spark plug wrench, install spark plugs. |
| 5. | Install the ignition coils. |
| 6. | Install the cylinder head center cover and the engine cover. |
DescriptionIgnition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data for the engine operating conditions are preprogrammed in the memory of the ECM (Engine Control Module).
Replacement1.Remove the battery (-) terminal.2.Remove the engine room under cover.(Refer to Engine Mechanical System - "Engine Room Under Cover")3.Remove the heater hose (A) and AEWP hose (B).4.Disconnect the lock pin to remove the heater hose pump connector (A).
System Block DiagramComponent Parts and Function Outline Component part Function Vehicle-speed sensor, ESP/ABS Control ModuleConverts vehicle speed to pulse.VCUReceives signals from sensor and control switches.