RUNNING LIGHT CONTROL MODULE INSPECTION


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1.  Connect the connector to the running light control module.

2.  Connect the negative battery cable.

3.  Measure the voltage at the running light control module using voltmeter.

•  If the value are not as specified in the Terminal Voltage List (Reference), inspect the parts under “Action” and related wiring harnesses.
•  If the system does not work properly even though the parts or related wiring harnesses do not have any malfunction, replace the running light control module.


Terminal Voltage List (Reference)

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Terminal

Signal

Connected to

Test condition

Voltage (V)y

Action

1B
Autostop switch signal
Autostop switch
Ignition switch at ON
Windshield wiper moving
B+
•  Autostop switch (windshield wiper motor)
•  Inspect related harness
Windshield wiper stopped
1.0 or less
1D
Windshield wiper switch signal (low)
Windshield wiper and washer switch
Ignition switch at ON
Windshield wiper moving
B+
•  Windshield wiper and washer switch (See WINDSHIELD WIPER AND WASHER SWITCH INSPECTION.)
•  Inspect related harness
Windshield wiper stopped
1.0 or less
1E
Illumination light on/off
TNS relay
Ignition switch at ON position
B+
•  Inspect ILLUMI 10 A fuse
•  Inspect TNS relay (See RELAY INSPECTION.)
•  Inspect related harness
Ignition switch at LOCK or ACC position
Light switch (light) at TNS or light position
B+
Light switch (light) at OFF position
1.0 or less
1F
Illumination light operation
•  Instrument cluster
•  Panel control switch
Light switch (light) at TNS or light position
B+
Light switch (light) at OFF position
1.0 or less
1G
Running light control module ground
GND
Under any condition
1.0 or less
•  Inspect GND
1H
Headlight relay (high-beam) on/off
Headlight relay
Ignition switch at ON position
B+
•  Inspect headlight relay (See LIGHT SWITCH INSPECTION.)
•  Inspect related harness
Light switch (light) at light position
Light switch (dimmer) at LO position
B+
Light switch (dimmer) at HI position
B+
Flash‐to‐pass on
B+
1I
Headlight high operation
•  Headlight (HI)
•  Headlight relay
Ignition switch at ON position
B+
•  Inspect headlight relay (See RELAY INSPECTION.)
•  Inspect related harness
Light switch (light) at light position
Light switch (dimmer) at LO position
B+
Light switch (dimmer) at HI position
1.0 or less
Flash-to-pass on
1.0 or less
1J
Headlight (high-beam) on/off
Light switch
Light switch (dimmer) at LO position
B+
•  Inspect light switch (See LIGHT SWITCH INSPECTION.)
•  Inspect related harness
Light switch (dimmer) at HI position
1.0 or less
2C
IG1
METER 10 A fuse
Ignition switch at ON position
B+
•  Inspect METER 10 A fuse
•  Inspect related harness
Ignition switch at LOCK or ACC position
1.0 or less
2D
Flash-to-pass on/off
Light switch (dimmer switch)
Light switch (light) at OFF or TNS position
B+
•  Inspect light switch (See LIGHT SWITCH INSPECTION.)
•  Inspect related harness
Light switch (light) at light position
B+
Flash‐to‐pass on
1.0 or less
2G
TNS relay on/off
TNS relay
Ignition switch at ON position
1.0 or less
•  Inspect TNS relay (See RELAY INSPECTION)
•  Inspect related harness
Ignition switch at LOCK or ACC position and light switch (light) at OFF position
B+
2I
Front fog light relay on/off
Front fog light relay
Light switch (light) at TNS or light position
Front fog light switch at ON position
1.0 or less
•  Inspect TNS relay (See RELAY INSPECTION.)
•  Inspect front fog light relay (See RELAY INSPECTION.)
•  Inspect related harness
Front fog light switch at OFF position
B+
2J
Front fog light on/off
Front and rear fog light switch
Front and rear fog light switch at OFF position
B+
•  Inspect front and rear fog light switch (See FRONT FOG LIGHT SWITCH INSPECTION.)
•  Inspect related harness
Front and rear fog light switch at ON position
1.0 or less
2K
Headlight relay on/off
Headlight relay
Ignition switch at ON position
1.0 or less
•  Inspect headlight relay (See RELAY INSPECTION.)
•  Inspect related harness
Ignition switch at LOCK or ACC and light switch (light) at OFF position
B+
2M
TNS on/off
Light switch
Light switch (light) at OFF position
B+
•  Inspect light switch (See LIGHT SWITCH INSPECTION.)
•  Inspect related harness
Light switch (light) at TNS or light position
1.0 or less
2N
Light switch signal
Light switch
Light switch at light position
1.0 or less
•  Light switch
•  Inspect related harness
Light switch at OFF position
B+
2O
Rear fog light switch signal
Rear fog light switch
Light switch (light) at light position and front fog switch at ON position
Rear fog switch at ON position
1.0 or less
•  Rear fog light switch
•  Inspect related harness
Rear fog switch at OFF position
B+
2P
Rear fog light control
Rear fog light relay
Light switch (light) at light position and front fog switch at ON position
Rear fog switch at ON position
1.0 or less
•  Rear fog light relay
•  Inspect related harness
Rear fog switch at OFF position
B+