Section 230 (Fog Light System): Inspection
WARNING: This page is about a different car, the 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT FRONT FOG LIGHT SWITCH CONTINUITY SPECIFIED CONDITION
Switch position Tester connection Specified condition OFF - No continuity ON 10 - 11 Continuity If continuity is not as specified, replace the switch.
- Connector disconnected: INSPECT FRONT FOG LIGHT SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the connector on the wire harness side, as shown.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
SPECIFIED CONDITIONTester connection Condition Specified condition 10 - 17 Always Continuity If circuit is not as specified, inspect the wire harness.
- Connector connected: INSPECT FRONT FOG LIGHT SWITCH CIRCUIT
Connect the wire harness side connector to the light control and dimmer switch and inspect the connector from the back side, as shown.
SPECIFIED CONDITIONTester connection Condition Specified condition 11 - Ground Light control switch HEAD and headlight dimmer switch LO and fog light switch ON No voltage 11 - Ground Light control switch HEAD and headlight dimmer switch LO and fog light switch OFF Battery Positive Voltage If circuit is not as specified, inspect the wire harness.
- INSPECT REAR FOG LIGHT SWITCH CIRCUIT
Disconnect the connector from the switch and inspect the connector on the wire harness side, as shown.
SPECIFIED CONDITIONTester connection Condition Specified condition 1 - Ground Always (1) Continuity 2 - Ground Light control switch TAIL or HEAD Continuity 3 - Ground Always Battery voltage 5 - Ground Light control switch HEAD Continuity 7 - Ground Always Continuity 8 - Ground Always Continuity (1) There is resistance because this circuit is ground through the bulb. If the circuit is not as specified, replace the wire harness.
- INSPECT FRONT FOG LIGHT RELAY CONTINUITY SPECIFIED CONDITION
Condition Tester connection Specified condition Always 1 - 2 Continuity Apply B+ between terminals 1 and 2. 3 - 5 Continuity If continuity is not as specified, replace the relay.