Lexus IS250 IS220d GSE20 ALE20 - HEATER
HEATER SWITCH (for 2AD-FHV) - ON-VEHICLE INSPECTION
| 1. INSPECT POWER HEATER SWITCH |
Disconnect the connector from the power heater switch.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
Tester connection
(Symbols)Condition Specified condition 3 (IG) - 4 (IN) Power heater switch: ON Below 1 Ω 3 (IG) - 4 (IN) Power heater switch: OFF 10 kΩ or higher
If the resistance is not as specified, replace the power heater switch.
Check that the power heater switch operation indicator comes on.
Connect the positive (+) lead from the battery to terminal 4 (IN) and the negative (-) lead to terminal 6 (E), and check that the operation indicator comes on.
If the indicator does not come on, replace the bulb.
Check that the power heater switch illumination comes on.
Connect the positive (+) lead from the battery to terminal 1 (ILL+) and the negative (-) lead to terminal 2 (ILL-), and check that the switch illumination comes on.
If the illumination does not come on, replace the bulb.