IMMOBILIZER SYSTEM
8-83
EAS30522
TROUBLESHOOTING
When the main switch is turned to “ON”, the immobilizer system indicator light does not come on nor
flashes.
NG →
OK ↓
NG →
OK ↓
NG →
OK ↓
NG →
OK ↓
EAS30523
SELF-DIAGNOSIS FAULT CODE INDICATION
When a system malfunction occurs, the fault code number is indicated in the meter display and the im-
mobilizer system indicator light flashes at the same time. The pattern of flashing also shows the fault
code.
1. Check the fuses.
(Ignition, fuel injection system,
backup, and main)
Refer to “CHECKING THE FUS-
ES” on page 8-127.
Replace the fuse(s).
2. Check the battery.
Refer to “CHECKING AND
CHARGING THE BATTERY” on
page 8-128.
• Clean the battery terminals.
• Recharge or replace the battery.
3. Check the main switch.
Refer to “CHECKING THE
SWITCHES” on page 8-123.
Replace the main switch/immobilizer unit.
4. Check the entire immobilizer sys-
tem wiring.
Refer to “CIRCUIT DIAGRAM” on
page 8-77.
Properly connect or replace the wiring har-
ness.
• Check the condition each of the im-
mobilizer system circuits.
• Refer to “SELF-DIAGNOSIS FAULT
CODE INDICATION” on page 8-83.
Fault code Part Symptom Cause Action
51 IMMOBILIZER
UNIT
Code cannot be trans-
mitted between the
key and the immobiliz-
er unit.
1. Radio wave interfer-
ence caused by ob-
jects around the keys
and antennas.
2. Immobilizer unit mal-
function.
3. Key malfunction.
1. Keep magnets,
metal objects, and
other immobilizer
system keys away
from the keys and
antennas.
2. Replace the main
switch/immobiliz-
er unit.
3. Replace the key.
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