Inspection Procedure 3: When the ignition switch is turned to the "ON" position (engine stopped), the SRS warning lamp does not Illuminate.

OPERATION

The SRS warning lamp illuminates when the ignition switch is turned to the "ON" position and goes out after approximately 7 seconds if there is not a malfunction in the SRS system.
As a cause, the failure of CAN bus line, combination meter, or SRS-ECU is suspected.

PROBABLE CAUSES

Damaged wiring harness and connectors
Combination meter malfunction
Malfunction of SRS-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.

warning

Since the radiator fan rotates during CAN bus line diagnostics, make sure that no one is servicing the engine compartment before diagnosing the CAN bus line. Since the CAN communication stops when diagnosing the CAN bus line, the ETACS-ECU detects the time-out of the engine-ECU, and activates the radiator fan to prevent overheating as fail-safe.

Use M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?

	Go to Step 2.

	Repair the CAN bus lines (refer to Group 54C, Troubleshooting ).

STEP 2. Recheck of the SRS warning lamp

(1)Connect the negative battery terminal.

(2)Ignition switch: ON

Q. Does the lamp illuminate?

	Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).

	Go to Step 3.

STEP 3. SRS warning lamp check

(1)Check that the negative battery terminal is disconnected. If connected, disconnect the negative battery terminal.

(2)Disconnect SRS-ECU connector B-109.
(3)Connect the negative battery terminal.
(4)Ignition switch: ON

Q. Does the lamp illuminate?

Replace SRS-ECU (Refer to

Go to step 4.

STEP 4. Wiring harness inspection between fusible link (1) and combination meter connector terminal No. 1, and between ignition switch (IG1) and combination meter connector terminal No.11

note

Prior to the wiring harness inspection, check the combination meter connector B-19 and repair if necessary.

The SRS warning lamp inspection for open and short circuit

Q. Is the check result normal?

Replace the combination meter. (Refer to GROUP 54A, Combination Meter

Repair the wiring harness.