Section 1000 (Fog Light System): Inspection
WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT FRONT FOG LIGHT SWITCH CONTINUITY FRONT FOG LIGHT SWITCH TERMINALS CONTINUITY
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 in Fig 2 .
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
FRONT FOG LIGHT SWITCH TERMINALS CONTINUITYTester 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 backside, as shown in Fig 3 .
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
FRONT FOG LIGHT SWITCH TERMINALS VOLTAGETester 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 in Fig 4 .
REAR FOG LIGHT SWITCH TERMINALS CONTINUITYTester 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 FRONT FOG LIGHT RELAY TERMINALS CONTINUITY
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.