Code No.89: Side
impact sensor (RH) communication error
Code No.96: Side impact sensor
(RH) communication
impossible
OPERATION
The side impact sensor includes an analog G sensor and
CPU, etc. The CPU monitors the
analog G sensor output signal. If the CPU judges that the side-airbags should
be deployed, it
sends a fire signal to the SRS-ECU to deploy the side-airbags. Besides that,
the CPU diagnoses
the internal components of the side impact sensor. If a malfunction occurs, it
requests the
SRS-ECU to set a diagnosis code.
DIAGNOSIS CODE SET CONDITIONS
These diagnosis codes are set if
communication between the side impact sensor (RH) and
the SRS-ECU is not possible or faulty.
PROBABLE CAUSES
- Damaged wiring harnesses or connectors
- Malfunction of the side impact sensor (RH)
- Malfunction of the SRS-ECU
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STEP 1. Check the side impact sensor (RH) (M.U.T.-III diagnosis
code).
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(1)Disconnect the negative battery terminal.
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(2)Replace the side impact sensor (RH) with the side impact
sensor (LH).
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(3)Connect the negative battery terminal.
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(4)Erase diagnosis code memory, and check the diagnosis
code.
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Q.
Is diagnosis code 79 or 93 out put?
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 Replace the side impact sensor (RH)
with a new one (Refer to  ).
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 Go to Step 2.
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STEP 2. Check the harness wires for open circuit or short circuit
between SRS-ECU connector C-146 (terminal No.40 and 42) and side impact
sensor (RH) connector
D-01 (terminal No.1 and 2).
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Q.
Is the check result normal?
Go to Step 3.
Repair the harness wires between
SRS-ECU connector C-146 (terminal No.40 and 42)
and side impact sensor (RH) connector D-01 (terminal No.1 and
2).
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STEP 3. Check whether the diagnosis code is reset.
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Q.
Is diagnosis code 89 or 96 set?
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Replace the SRS-ECU (Refer to ).
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An
intermittent malfunction is suspected (Refer to GROUP 00, How to Use
Troubleshooting/Inspection
Service Points ).
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