B1311

DTC B1311 TN panel sensor: Close&Open=ON






CIRCUIT OPERATION

The convertible top control module judges the tonneau panel state based on the signals from the tonneau sensor provided on the tonneau drive cylinder and right and left tonneau latch switches (Ready to latch). The tonneau sensor and tonneau latch switches (Ready to latch) set the following signals to the convertible top control module according to the tonneau panel state.






DTC SET CONDITION

This DTC is set when the signal from either right or left tonneau latch switch (Ready to latch) (LH) and the signal from the tonneau sensor are turned ON simultaneously.

TROUBLESHOOTING HINTS

- ON failure of tonneau latch switch (Ready to latch) (including short circuit of signal line)
- ON failure of tonneau sensor (including defective power supply line or signal line)
- Malfunction of the convertible top control module

NOTE:
When ON failure occurs in either tonneau latch switch (Ready to latch), DTC B1305 or B1306 is set at the same time.

DIAGNOSIS

Required Special Tool

- MB991958 Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827 M.U.T.-III USB Cable
- MB991910 M.U.T.-III Main Harness A
- MB992006: Extra fine probe

STEP 1. Using scan tool MB991958, read the diagnostic trouble code.

Q. Is DTC B1305 or B1306 set?

YES [DTC B1305 is set] : Perform troubleshooting for DTC B1305.
YES [DTC B1306 is set] : Perform troubleshooting for DTC B1306.
NO Go to Step 2.
STEP 2. Using scan tool MB991958, check data list.

(1)Close the convertible top.

(2)Use scan tool MB991958 to check the following service data (Refer to Data Reference Table).

- Item 14: Tonneau sensor up
OK: "OFF" appears.


Q. Is the check result satisfactory?

YES Go to Step 6.
NO Go to Step 3.
STEP 3. Check convertible top control module connector D-45 for loose, corroded or damaged terminals, or terminals pushed back in the connector.





Q. Is the check result satisfactory?

YES Go to Step 4.

NO Repair or replace the damaged component(s).

STEP 4. Check the harness between convertible top control module connector D-45 (terminal 47, 45) and Tonneau sensor connector D-39 (terminal 2, 1).





Q. Is the check result satisfactory?

YES Replace the tonneau sensor. Then go to Step 5.

NO Repair the harness wire.

STEP 5. Using scan tool MB991958, check data list.

Use scan tool MB991958 to check the following service data (Refer to Data Reference Table).

- Item 14: Tonneau sensor up

OK: "OFF" appears.


Q. Is the check result satisfactory?

YES The procedure is complete.
NO Replace the convertible top control module.
STEP 6. Recheck the DTC.

Q. Is DTC B1311 set?

YES Replace the convertible top control module.
NO Intermittent malfunction How to Cope With Intermittent Malfunctions).