Mazda MX-6 1998, Workshop Manual

Page: 1015 / 1282

TROUBLESHOOTING [POWER DOOR LOCK SYSTEM]
STEP
INSPECTION
ACTION
6 Does keyless entry system operate properly?
Yes Troubleshooting is completed.
No
if power door lock system does not lock or unlock, go to
symptom troubleshooting No.4.
If passenger’s side and rear doors do not lock or unlock,
go to symptom troubleshooting No.5.
If driver’s side door does not lock or unlock, go to
symptom troubleshooting No.6.
If trunk lid opener does not lock or unlock, go to symptom
troubleshooting No.7.
Power door lock system does not lock or unlock.
TROUBLESHOOTING HINTS
Malfunction in CPU power supply/ground circuit
© Power door lock system does not function
• ROOM 15 A fuse malfunction
• CPU malfunction
• Malfunction in wiring harness between ROOM 15 A fuse and CPU
• Malfunction in wiring harness between CPU and ground
Malfunction in door lock timer unit 1 and door lock timer unit 2 power supply/ground circuit
© Power door lock system does not function
• D.LOCK 30 A fuse malfunction
• Malfunction in wiring harness between D.LOCK 30 A fuse and door lock tim er unit 1 or door lock timer unit 2
Malfunction in power door lock system input signal circuit
© Power door lock system does not function
• CPU malfunction
• Door lock switch malfunction
• Malfunction in wiring harness between CPU and door lock switch
• Malfunction in wiring harness between door lock switch and ground
Malfunction in power door lock system operation circuit
© Power door lock system does not function
• CPU malfunction
STEP
INSPECTION ACTION
Are ROOM 15 A fuse and D.LOCK 30 A fuse
okay?
ROOM 15 A FUSE
D.LOCK 30 A FUSE
W 6 U 9 0 1 W E J
Yes Go to next step.
No Repairing wiring harness.
Replace fuse.
Remove driver’s side front door trim.
Disconnect door lock switch connector.
Measure voltage at door lock switch
connector terminal A?
Is voltage 5 V?
Yes Go to next step.
No Go to step 6.
DOOR LOCK
' SWITCH
CONNECTOR
9
B A
W 6 U 9 0 1 W E K
0 9 -0 1 E -1 7