Mazda MX-6 1998, Руководство по ремонту

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TROUBLESHOOTING [IMMOBILIZER SYSTEM]
DTC
21
Code word/ID number memorized in immobilizer unit EEPROM can not be read
POSSIBLE
CAUSE
• Defective immobilizer unit
STEP
INSPECTION ACTION
Turn the IG switch from LOCK to START for 2
seconds.
Is security light indicates DTC 21 again?
Yes Replace immobilizer unit and reprogram immobilizer
system.
i d
-
0 9 -1 4 IMMOBILIZER SYSTEM REPROGRAM
PROCEDURE, Immobilizer Unit Replacement
No Immobilizer system is okay.
DTC 24
Wiring harness between immobilizer unit and PCM is open or short circuit.
POSSIBLE
CAUSE
• Defective immobilizer unit
• Defective PCM
• Poor connection of connector
• Defective wiring harness
STEP
INSPECTION ACTION
Is both immobilizer unit and PCM connectors
connected properly?
Yes Go to next step.
No Connect connectors properly.
Disconnect immobilizer unit and PCM unit
connectors.
Connect
SST to PCM connector.
Connect one probe to terminal A at immobilizer
unit connector and another probe to No.5 at SST.
Check for continuity between terminal A at
immobilizer unit connector and terminal 5 at PCM
connector of wiring harness.
Is there continuity?
TO PCM
CONNECTOR
IMMOBILIZER
UNIT
CONNECTOR
Yes Go to next step.
No
Repair wiring harness between PCM and immobilizer unit.
4 9 U N 0 1 130
W 6 U 9 0 1 W G 3
Check for continuity between terminal A at
immobilizer unit connector of wiring harness and
ground.
Is there continuity?
Yes
Repair for short circuit on wiring harness between PCM
and immobilizer unit.
IMMOBILIZER UNIT
CONNECTOR
M K
X
E C
A
N L J H F
D
B
No Go to next step.
W 6 U 9 0 1 W G 4
0 9 -0 1 F -5