54A-DTC U1190 NO RECEIVE FAULT DETECT SIGNAL

DTC U1190: No receive fault detect signal

JUDGMENT CRITERIA

ETACS-ECU sends the DTC (U code) detection permission or prohibition signal to each ECU connected to the CAN bus line. If the multivision display cannot receive the DTC (U code) detection permission or prohibition signal for 5 seconds after turning the ignition switch to ON position, DTC No. U1190 will be set.

TROUBLESHOOTING HINTS

The ETACS-ECU may be defective
The CAN bus line may be defective

DIAGNOSIS

STEP 1. Using scan tool (M.U.T.-III), diagnose the CAN bus line.

(1)

caution

To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III).

Connect scan tool (M.U.T.-III). Refer to "How to connect the Scan Tool (M.U.T.-III)

(2) Turn the ignition switch to the "ON" position.

(3) Diagnose the CAN bus line.

(4) Turn the ignition switch to the "LOCK" (OFF) position.

Is the CAN bus line found to be normal?

Go to Step 2

Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting

STEP 2. Recheck for diagnostic trouble code.

Check again if the DTC is set in the multivision display.

(1) Erase the DTC.

(2) Turn the ignition switch to "ON" position.

(3) On completion, check that the DTC is set.

Is the DTC set?

Replace the ETACS-ECU. Then go to Step 3

The procedure is complete.