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Tire Pressure Monitoring System (TPMS)
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3. TPMS ECU learning procedure
Prerequisite:
A) All TPMS Sensors and TPMS ECU to be learnt shall be available.
B) Check and verify part number of the TPMS ECU. It shall be 550254800102.
Why ECU Learning is needed?
1) ECU is not having the respective Tire sensor ID with in its memory as it is recently flashed with updated
software. This can be confirmed by reading DID for respective tire by using Diagnostic Tool.
The respective DID are as follows:
6408: TPMS Front Left Tire ID
6609: TPMS Front Right Tire ID
640A: TPMS Rear Right Tire ID
640B: TPMS Rear Left Tire ID
640C: TPMS Spare Tire ID
NOTE
Total numbers of TPMS Sensors to be learnt are considered as
5
.
TPMS learning can be done through two ways:
a) By using Triggering tools (LF tool).
Triggering tool should be kept near to Tire valve to detect Sensor ID. This is done for all tires including
spare. Once all tire IDs are known using LF tool, they are written in ECU using Diagnostic tools. The
respective DIDs are as given above. (DID 64XX)
b) TPMS Learning can also be done manually by service engineer as given below:
For learning process please follow below steps.
Execute the TPMS routine 4A01 in order to enter in manual learning mode.
Before starting the TPMS learning, drop down the spare tire so you will be able to take out air from it.
Respective Tire Sensor ID should be written in ECU using diagnostic tool.
Do the following operation in the same sequence. Respective tire is triggered by reducing or increasing
tire pressure by 1.2 psi/sec.
If you observe “flash hazard and two short horn beeps”, the system has successfully entered into learning