Mazda 6 2002, Workshop Manual

Page: 791 / 1248

S–34
POWER DOOR LOCK SYSTEM
DOOR LOCK TIMER UNIT INSPECTION
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1. Measure the voltage at the door lock timer unit terminals (other than terminal 1E and 2W) as indicated below.
•
If not as specified, inspect the parts listed under “Action.”
2. Disconnect the negative battery cable.
3. Disconnect the door lock timer unit connector and inspect for continuity between terminal 1E or 2W and the
bracket.
4. Inspect for continuity at terminal 1E and 2W as indicated below.
5. If the parts and wiring harnesses are okay but the system still does not work properly, perform the troubleshooting.
Terminal voltage list (Reference)
Terminal Signal Connected to Test condition
Voltage (V)/
Continuity
Action
1A
Power
supply
D. LOCK 30 A fuse Under any condition B+
•
Inspect D. LOCK
30 A fuse
•
Inspect the vehicle
battery
•
Inspect related
harness
1B
Room light
control
•
Front map light
•
Rear map light
•
Courtesy light
Any door is open Below 1.0
•
Inspect ROOM 15 A
fuse
•
Inspect door switch
•
Inspect front map light
•
Inspect rear map light
•
Inspect courtesy light
•
Inspect related
harness
1C
Unlock
output
•
Door lock
actuator
•
Trunk lid lock
actuator (4SD)
•
Liftgate lock
actuator (5HB)
While lock actuator is unlocking
Below
1.0
→
B+
→
Below
1.0
•
Inspect door lock
actuator
•
Inspect trunk lid lock
actuator (4SD)
•
Inspect liftgate lock
actuator (5HB)
•
Inspect D. LOCK
30 A fuse
•
Inspect related
harness
Other Below 1.0
1D Lock output
•
Door lock
actuator
•
Trunk lid lock
actuator (4SD)
•
Liftgate lock
actuator (5HB)
While lock actuator is locking
Below
1.0
→
B+
→
Below
1.0
•
Inspect door lock
actuator
•
Inspect trunk lid lock
actuator (4SD)
•
Inspect liftgate lock
actuator (5HB)
•
Inspect D. LOCK
30 A fuse
•
Inspect related
harness
Other Below 1.0
1E
Power
ground
GND
Under any condition: inspect for
continuity to ground
Yes
•
Inspect GND
1F
*1
Double lock
output
Door lock actuator
Door lock actuators are double
locked
Below
1.0
→
B+
→
Below
1.0
•
Inspect door lock
actuator
•
Inspect related
harness
Other Below 1.0
2A
Power
supply
METER IG 15 A fuse Under any condition B+
•
Inspect METER IG
15 A fuse
•
Inspect related
harness
2B IG1 ROOM 15 A fuse
Ignition switch is at ON position B+
•
Inspect ROOM 15 A
fuse
•
Inspect related
harness
Ignition switch is at LOCK or
ACC position
Below 1.0
2C - - - - -
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