Mazda MX-6 1998, Workshop Manual

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TROUBLESHOOTING [POWER DOOR LOCK SYSTEM]
STEP
INSPECTION ACTION
Note
• Monitor voltage at keyless unit connector
terminal E while performing on-board
diagnostic function 1.
• Did malfunction judgment buzzer in
on-board diagnostic function 1 sound one
time?
W 6 U 9 0 1 W E 9
Yes If driver’s side door does not unlock, go to next step.
If passenger’s side and rear doors do not unlock, go to
step 3.
If no doors lock, go to step 4.
No Is voltage at keyless unit connector terminal E okay?
• 0 V (during on-board diagnostic activate verification
buzzer sounds)
• 3.5 V (after 3 seconds after buzzer sounded)
• 1.7 V (after 6 seconds after buzzer sounded)
• 1.7 V (after 9 seconds after buzzer sounded)
If voltage is okay, replace CPU.
If voltage is not okay, replace keyless unit.
Turn ignition switch to ON.
Connect jum per wire between CPU connector
2F terminal and ground.
Does driver’s side door unlock?
Yes Check CPU. (terminal 2F)
No
Go to symptom troubleshooting No.6.
I
2 0 2M 2K 2I 2G 2E 2C
I
2A
2N 2L 2H
2-J 2B
u
W 6 U 9 0 1 W E A
Turn ignition switch to ON.
Connect jum per wire between CPU connector
2H terminal and ground.
Do passenger’s side and rear doors unlock?
Yes Check CPU. (terminal 2H)
No Go to symptom troubleshooting No.5.
2 0 2 M 2 K 2I 2 G 2 B 2 Ç 2A
zplm liii n im
W6U901WEB
0 9 -0 1 E -1 5