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:
"CHK" message(s) are displayed on the SIGNAL CHECK screen.
DESCRIPTION On the SIGNAL CHECK screen, it is possible to check if the signals sent to the parking assist ECU are normal. Click here HINT:
On the SIGNAL CHECK screen, "OK" (blue) is displayed for items with a normal inspection result or input state.
On the SIGNAL CHECK screen, "CHK" (red) is
Installation
INSTALLATION CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE 1. INSTALL SST (a) Align the cutout on end of the shock rod of the front shock absorber assembly LH with the installation position. NOTICE: Be s
