Mazda 2002 6 - Page 940

T–46
EXTERIOR LIGHTING SYSTEM
RUNNING LIGHT UNIT INSPECTION
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1. Connect the connector to the running light unit.
2. Connect the negative battery cable.
3. Measure the voltage at the running light unit using voltmeter.
• When inspecting terminal D, H or P for continuity, disconnect the running light unit connector.
4. If the value are not as specified in the Terminal Voltage List (Reference), inspect the parts under “Action” and
related wiring harnesses.
5. If the system does not work properly even though the parts or related wiring harnesses do not have any
malfunction, replace the running light unit.
Terminal Voltage List (Reference)
Terminal Signal Connected to Test condition
Voltage (V)/
Continuity
Action
A
Illumination
light on/off
TNS relay
Ignition switch at ON position B+
• Inspect ILLUMI 10 A
fuse
• Inspect TNS relay (See
T–24 RELAY
INSPECTION)
• Inspect related harness
Ignition switch
at LOCK or
ACC position
Headlight switch
(light) at TNS or
headlight
position
Below 1.0
Headlight switch
(light) at OFF
position
B+
B
Illumination
light operation
• Instrument
cluster
• Panel control
switch
Headlight switch (light) at TNS or
headlight position
B+
—
Headlight switch (light) at OFF
position
Below 1.0
C
Headlight
relay (high-
beam) on/off
Headlight relay
Ignition switch at ON position B+
• Inspect headlight relay
(See T–24 RELAY
INSPECTION)
• Inspect related harness
Headliht switch
(light) at
headlight
position
Headlight switch
(dimmer) at LO
position
B+
Headlight switch
(dimmer) at HI
position
B+
Flash-to-pass on B+
D
Running light
unit ground
GND
Under any condition: inspect for
continuity to ground
Yes • Inspect GND
EIG1
METER IG 15 A
fuse
Ignition switch at ON position B+
• Inspect METER IG
15 A fuse
• Inspect related harness
Ignition switch at LOCK or ACC
position
Below 1.0
F
Front fog light
relay on/off
Front fog light
relay
Front fog light
switch at ON
position
Headlight switch
(light) at TNS or
headlight
position
Below 1.0
• Inspect TNS relay (See
T–24 RELAY
INSPECTION)
• Inspect front fog light
relay (See T–24
RELAY INSPECTION)
• Inspect related harness
Headlight switch
(light) at OFF
position
B+
G
TNS relay on/
off
TNS relay
Ignition switch at ON position Below 1.0
• Inspect TNS relay (See
T–24 RELAY
INSPECTION)
• Inspect related harness
Ignition switch at LOCK or ACC
position and headlight switch
(light) at OFF position
B+
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