Toyota Tundra Service Manual: Check Mode Procedure

CHECK MODE PROCEDURE

CHECK MODE (SIGNAL CHECK): DTC CHECK

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Turn the Techstream on.

(e) Select "Signal Check" and proceed with checking using the Techstream.

NOTICE:

Select Signal Check on the Techstream to clear the DTCs (both current and history).

HINT:

DTCs can be detected more sensitively in check mode than in normal diagnosis mode.
Perform check mode inspection when a malfunction in a squib circuit is suspected even after the normal system code is output through normal diagnosis mode inspection.

Toyota Tundra Service Manual > Air Conditioning System(for Manual Air Conditioning System): Multiplex Communication Circuit (B1499/99)
DESCRIPTION This DTC outputs when CAN communication error is occurred. DTC Code DTC Detection Condition Trouble Area B1499/99 Open in CAN communication circuit CAN communication system PROCEDURE 1. CHECK FOR DTC (a) Clear the DTC (see page ). (b) Check for DTC (see page ). Result Result Proceed to D ...

Toyota Tundra Owners Manual