ON-BOARD DIAGNOSIS SYSTEM [IMMOBILIZER SYSTEM]

id0914001112c3


Outline

•  The immobilizer system has an on-board diagnostic function to facilitate system diagnosis.

Function

•  The on-board diagnostic function consists of the following functions: A malfunction detection function, which detects overall malfunctions in the immobilizer system-related parts; a memory function, which stores detected DTCs; a display function, which indicates system malfunctions via DTC display; and a PID/data monitoring function, which reads out specific input/output signals.
•  Using the Mazda Modular Diagnostic System (M-MDS), DTCs can be read out and deleted, and PID/data monitoring can be performed.

On-board Diagnostic Function

Malfunction detection function
•  Detects overall malfunctions in the immobilizer system-related parts.
•  Malfunction diagnosis of the immobilizer system is automatically performed every time the engine is switched from OFF/LOCK (ACC) to ON (START).
Memory Function
•  Malfunctions detected by the malfunction detection function are all recorded as DTCs in the following modules.
―  Start stop unit
―  PCM
Caution
•  Recorded immobilizer system DTCs are cleared when the ignition is switched ON from OFF (LOCK)/ACC.
Display Function
•  If there is a malfunction in the immobilizer system, the security indicator light in the instrument cluster is illuminated to notify the driver. In addition, DTCs are displayed by the number of times that the security indicator light flashes.
Note
•  If two or more malfunctions are detected as a result of malfunction diagnosis, only the DTC with the lowest number of those detected will be indicated by the security indicator light.
•  In the approx. 1 min after detecting a malfunction and before indicating the DTC, the security indicator light illuminates or flashes in the following patterns:

Security indicator light flash pattern

(before displaying DTC)

DTC
09, 11, 13, 15, 16
22, 23

•  DTC 21 is displayed when the ignition is switched ON (engine off or on) and the security indicator light illumination turns off for approx. 1 min.
•  Using the Mazda Modular Diagnostic System (M-MDS), DTCs can be read out and deleted.
Caution
•  If the security indicator light itself has a malfunction, it is possible that a DTC may not be indicated properly.


DTC table

×: Applicable
—: Not applicable

DTC

KEY warning indicator light (red)

Push button indicator light (amber)

Description

Fail-safe function

Drive cycle

Self test type*2

Memory function

M-MDS display*1

Security indicator light flash pattern

Start stop unit

PCM
U3000:96
P1260:00
09
On
Flash
Start stop unit malfunction
—
—
C
×
B10D9:87
P1260:00
11
—
Flash
Coil antenna (built into push button start) error
—
—
C
—
B13D3:05
P1260:00
13
—
—
Remote transmitter programming error
—
—
C
—
B13D3:94
P1260:00
13
—
—
Communication error with remote transmitter
—
—
C
—
B13D3:51
P1260:00
15
—
Flash
Unregistered remote transmitter is detected
—
—
C
—
U0100:87
P1260:00
16
—
—
Communication error with PCM (no response or data mis-matched)
—
—
C
—
B13D4:00
P1260:00
21
On
—
Insufficient remote transmitter programming number
—
—
C
—
B10DA:51
P1260:00
22
—
—
Communication error with PCM (data received failure)
—
—
C
—
B10DA:62
P1260:00
23
—
—
Communication error with PCM (code mis-matched)
—
—
C
—

*1  :The letters at the beginning of each DTC are only displayed when using the M-MDS, and refer to the following: B= Body system, P= Powertrain system, U= Network communication system.
*2  :C: CMDTC self test, D: ODDTC self test


DTC 7-digit code definition

•  When related systems or components have failed, the CM stores the DTC of the malfunctioning part in the CM memory, and allows for the retrieval of the store data using scanning tool when necessary. The DTCs are indicated using seven digits. Each digit indicates the following.
ac5uun00001110

Status byte for DTC

•  The status byte is the two digits (two digits after hyphen (-)) after the seven-digit DTC.
ac5wzn00002017
•  The status byte is a code which indicates the pending code, current/past malfunction status, or warning illumination status.
•  The status byte can be read by performing a CMDTC self-test using the Mazda Modular Diagnostic System (M-MDS).
•  For details on the status byte, refer to the explanation on the M-MDS when reading the DTC.

Detection condition for the applicable DTC

DTC

System malfunction location

Detection condition
U3000:96/P1260:00
Start stop unit malfunction
Start stop unit malfunction detected.
B10D9:87/P1260:00
Coil antenna (built into push button start) error
Start stop unit detected a malfunction in the coil antenna, and remote transmitter communication is not possible
B13D3:05/P1260:00
Remote transmitter program error
Start stop unit detects a remote transmitter program error.
B13D3:94/P1260:00
Communication error with remote transmitter
Start stop unit could not detect the remote transmitter communication or communication error was detected.
B13D3:51/P1260:00
Unregistered remote transmitter is detected
Start stop unit detects that the remote transmitter has not been programmed.
U0100:87/P1260:00
Communication error with PCM (no response or data mis-match)
Start stop unit detects a communication error (no response or immobilizer system cancel not possible) with the PCM.
B13D4:00/P1260:00
Insufficient remote transmitter programming number
Start stop unit detects that the number of programmed remote transmitters is less than 2.
B10DA:51/P1260:00
Communication error with PCM (data received failure)
Start stop unit detects a communication error (data received failure) with PCM.
B10DA:62/P1260:00
Communication error with PCM (code mis-matched)
Start stop unit detects a communication error (code mis-matched) with the PCM..


PID/data Monitor Function

•  With the PID/data monitor function, items set in the module can be selected and read out in real-time.

PID/data monitor table

PID

Unit/Operation

Data contents

Inspection item(s)
NUM_TRNSMIT
—
Displays the number of the remote transmitters programmed to the start stop unit.
Start stop unit