Mazda 2002 6 Workshop Manual page 940

RUNNING LIGHT UNIT INSPECTION
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
Illumination
A
light on/off
Illumination
B
light operation
Headlight
C relay (high-
beam) on/off
Running light
D
unit ground
E IG1
Front fog light
F
relay on/off
TNS relay on/
G
off
T–46
EXTERIOR LIGHTING SYSTEM
Connected to
Ignition switch at ON position
Ignition switch
TNS relay
at LOCK or
ACC position
• Instrument
Headlight switch (light) at TNS or
headlight position
cluster
• Panel control
Headlight switch (light) at OFF
switch
position
Ignition switch at ON position
Headliht switch
(light) at
Headlight relay
headlight
position
Flash-to-pass on
Under any condition: inspect for
GND
continuity to ground
Ignition switch at ON position
METER IG 15 A
Ignition switch at LOCK or ACC
fuse
position
Front fog light
Front fog light
switch at ON
relay
position
Ignition switch at ON position
Ignition switch at LOCK or ACC
TNS relay
position and headlight switch
(light) at OFF position
Test condition
Headlight switch
(light) at TNS or
headlight
position
Headlight switch
(light) at OFF
position
Headlight switch
(dimmer) at LO
position
Headlight switch
(dimmer) at HI
position
Headlight switch
(light) at TNS or
headlight
position
Headlight switch
(light) at OFF
position
Voltage (V)/
Action
Continuity
B+
• Inspect ILLUMI 10 A
fuse
Below 1.0
• Inspect TNS relay (See
T–24 RELAY
INSPECTION)
• Inspect related harness
B+
B+
Below 1.0
B+
• Inspect headlight relay
B+
(See T–24 RELAY
INSPECTION)
• Inspect related harness
B+
B+
• Inspect GND
Yes
• Inspect METER IG
B+
15 A fuse
Below 1.0
• Inspect related harness
• Inspect TNS relay (See
T–24 RELAY
Below 1.0
INSPECTION)
• Inspect front fog light
relay (See
RELAY INSPECTION)
B+
• Inspect related harness
• Inspect TNS relay (See
Below 1.0
T–24 RELAY
INSPECTION)
B+
• Inspect related harness
A6E811266731W02
A6E8112W155
—
T–24