Mazda MX-6 1998, Workshop Manual

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TROUBLESHOOTING [THEFT-DETERRENT (KEYLESS ENTRY SECURITY) SYSTEM]
8 Alarm does not stop when trunk lid is unlocked with key while alarm operates
TROUBLESHOOTING HINTS
Malfunction in theft-deterrent system operation circuit
• CPU malfunction
• Trunk key cylinder switch malfunction
• Malfunction in wiring harness between CPU and trunk key cylinder switch
• Malfunction in wiring harness between trunk key cylinder switch and ground
STEP INSPECTION
ACTION
Measure voltage at terminal A at trunk key
cylinder switch connector of wiring harness.
Is voltage 5 V?
TRUNK KEY
CYLINDER
SWITCH
CONNECTOR
A
W 6 U 9 0 1 W J 7
Yes Go to step 3.
No Go to next step.
Remove driver’s side front scuff plate.
Remove driver’s side front side trim.
Remove nut fixed in joint box.
Measure voltage at terminal 2J at CPU
connector.
Is voltage 5 V?
Yes Repair wiring harness between CPU and trunk key
cylinder switch.
No Replace CPU.
20
2M
2K 2I 2G 2E 20
f]
2A
?? 2N
' 2J
2H 20 2B
W 6 U 9 0 1 W J 6
Disconnect trunk key cylinder switch
connector.
Check for continuity between trunk key
cylinder switch connector terminal B and
ground.
Is there continuity?
Yes
Replace trunk key cylinder.
No
Repair wiring harness between trunk key cylinder switch
and ground.
TRUNK KEY
CYLINDER
' SWITCH
CONNECTOR
o
B A
W 6 U 9 0 1 W J 8
0 9 -0 1 G -7