Lexus NX: On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT RESERVOIR CAP
(a) Measure the valve opening pressure.
| *a | O-Ring |
| *b | Rubber Packing |
(1) If there are water stains or foreign matter on the O-ring, clean it with water and finger scouring.
(2) Check that the O-ring is not deformed, cracked or swollen.
(3) Apply engine coolant to the O-ring and rubber packing before using a radiator cap tester.
| (4) When using the radiator cap tester, tilt it more than 30° degrees. |
|
(5) Pump the radiator cap tester several times and check the maximum pressure*.
Pump speed:
1 pump per second
*: Even if the cap cannot maintain the maximum pressure, it is not a defect.
Standard Judgment Criterion:
| Item | Specified Condition |
|---|---|
| Standard value (for brand-new cap) | 93 to 123 kPa (1.0 to 1.3 kgf/cm2, 13.5 to 18 psi) |
| Minimum standard value (for used cap) | 79 kPa (0.8 kgf/cm2, 11.4 psi) |
If the maximum pressure is less than the minimum standard value, replace the reservoir cap.
2. INSPECT FINS FOR BLOCKAGE
(a) If the fins are clogged, wash them with water or a steam cleaner and dry them with compressed air.
NOTICE:
- To avoid damaging the fins, the injection direction should be at right angles to the core surface.
-
If the steam cleaner is too close to the core, there is a possibility of damaging the fins, so maintain the following injection distances.
Standard Injection Distance:
Injection Pressure
Specified Condition
2942 to 4903 kPa (30.0 to 50.0 kgf/cm2, 427 to 711 psi)
300 mm (11.8 in.)
4903 to 7845 kPa (50.0 to 80.0 kgf/cm2, 711 to 1138 psi)
500 mm (19.7 in.)
- If the fins are bent, straighten them with a screwdriver or pliers.
- Do not expose electronic components to water.
(b) Dry the fins with compressed air.
READ NEXT:
Removal
REMOVAL PROCEDURE 1. DRAIN ENGINE COOLANT Click here 2. REMOVE FRONT BUMPER REINFORCEMENT SUB-ASSEMBLY Click here 3. DISCONNECT HOOD LOCK ASSEMBLY (a) Detach the 2 clamps and disconnect the ho
Installation
INSTALLATION PROCEDURE 1. INSTALL LOWER RADIATOR SUPPORT (a) Install the 2 lower radiator supports to the fan shroud. 2. INSTALL RADIATOR SUPPORT CUSHION (a) Install the 2 radiator support cushions to
Relay
On-vehicle InspectionON-VEHICLE INSPECTION PROCEDURE 1. INSPECT COOLING FAN RELAY (FAN NO. 1) (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Test
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT CHARCOAL CANISTER ASSEMBLY (a) Visually check the charcoal canister assembly for cracks or damage. If cracks or damage is found, replace the charcoal canister assembly. (b) Check the canister operation. *1 Connector *a Vent Line Port *b
Cruise Control Switch Circuit
DESCRIPTION
The cruise control main switch outputs the cruise control power supply switch signal and each operation switch signal to the hybrid vehicle control ECU.
The hybrid vehicle control ECU performs cruise control according to the signal from the cruise control main switch.
WIRING DIAG
