Disconnect the subthrottle sensor connector and connect the setting adapter [A] between these connectors.
Special Tool - Throttle Sensor Setting Adapter: 57001 -1538
Subthrottle Sensor Output Voltage Connections to Adapter: Digital Meter (+) → R (sensor BL/W) lead Digital Meter (–) → BK (sensor BR/BK) lead
ECU Intake Air Temperature Sensor
Output Voltage
Standard: DC 0.8 1.0 V at
subthrottle valve full close
position (for reference)
DC 4.28 4.32 V at subthrottle valve
full
open position
NOTE
0.8 × 4.75 ÷ 5.00 = 0.76 V 1.0 × 4.75 ÷ 5.00 = 0.95 V Thus, the valid range is 0.76 ∼ 0.95 V
If the reading is out of the standard, check the subthrottle sensor resistance (see Subthrottle Sensor Resistance Inspection).
If the reading is within the standard, remove the ECU and check the wiring for continuity between harness connectors.
Special Tool - Hand Tester: 57001-1394
Disconnect the ECU and sensor connectors.
Wiring Continuity Inspection ECU Connector [A] ←→ Subthrottle Sensor Connector [B] BL/W lead (ECU terminal 12) [C] BR/BK lead (ECU terminal 13) [D]
If the wiring is good, check the ECU for its ground and power supply (see ECU Power Supply Inspection in the Fuel System (DFI) chapter).
If the ground and power supply are good, replace the ECU (see ECU Removal/Installation in the Fuel System (DFI) chapter).
Radiator Inspection
Remove the radiator (see Radiator and Radiator Fan Removal).
Check the radiator core.
If there are obstructions to air flow, remove them.
If the corrugated fins [A] are deformed, carefully
straighten them.
If the air passages of the radiator core are blocked more
than 20% by unremovable ...
Air Cleaner Element Replacement
NOTE
In dusty areas, the element should be replaced more
frequently than the recommended interval.
WARNINGIf dirt or dust is allowed to pass through
into the
throttle body assy, the throttle may become stuck,
possibly causing accident. Replace the air cleaner
element according ...
Cylinder Head Warp Inspection
Clean the cylinder head.
Lay a straightedge across the lower surface of the cylinder
head at several positions.
Use a thickness gauge [A] to measure the space between
the straightedge [B] and the head.
Cylinder Head Warp
Standard: – – –
Service Limit: 0.05 mm (0.0020 in.)
...