DTC B1207:24 [MAZDA ERA-GLONASS CONTROL MODULE]

id0902r6059900

Description

Event notification signal circuit malfunction
Detection condition
•  The Mazda ERA-GLONASS control module detected a short to power supply in the event notification signal circuit for 2 seconds with the ignition switched ON (engine off or on).
Fail-safe function
Not applicable
Possible cause
•  SAS control module connector or terminal malfunction
•  Mazda ERA-GLONASS control module connector or terminal malfunction
•  Short to power supply in wiring harness between Mazda ERA-GLONASS control module terminal 1AA and SAS control module terminal 3AF.
•  SAS control module malfunction
•  Mazda ERA-GLONASS control module malfunction

Diagnostic Procedure

Step

Inspection

Action
1
VERIFY SAS CONTROL MODULE DTCs
•  Retrieve the SAS control module DTCs using the M-MDS.
•  Are any DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [SAS CONTROL MODULE].)
No
Go to the next step.
2
INSPECT SAS CONTROL MODULE CONNECTOR CONDITION
Warning
•  Handling the component parts improperly can accidentally operate (deploy) the air bag modules, pre-tensioner seat belts and lap pre-tensioner seat belts, which may seriously injure you. Read the service warnings/cautions and the workshop manual before handling the air bag system components.
•  Switch the ignition off.
•  Disconnect the negative battery terminal and wait for 1 min or more. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)
•  Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION.)
•  Disconnect the clock spring connector. (See CLOCK SPRING REMOVAL/INSTALLATION.)
•  Remove the glove compartment. (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)
•  Disconnect the passenger-side air bag module connector. (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION.)
•  Disconnect the driver and passenger-side front seat connectors. (See FRONT SEAT REMOVAL/INSTALLATION.)
•  Remove the headliner. (See HEADLINER REMOVAL/INSTALLATION.)
•  Disconnect the driver and passenger-side curtain air bag module connectors. (See CURTAIN AIR BAG MODULE REMOVAL/INSTALLATION.)
•  Remove the B-pillar lower trim. (See B-PILLAR LOWER TRIM REMOVAL/INSTALLATION.)
•  Disconnect the driver and passenger-side front pre-tensioner seat belt connectors. (See FRONT SEAT BELT REMOVAL/INSTALLATION.)
•  Remove the trunk side trim. (See TRUNK SIDE TRIM REMOVAL/INSTALLATION.)
•  Disconnect the driver and passenger-side rear pre-tensioner seat belt connectors. (See SECOND-ROW SEAT BELT REMOVAL/INSTALLATION.)
•  Remove the selector lever component. (See AUTOMATIC TRANSAXLE SHIFT MECHANISM REMOVAL/INSTALLATION.)
•  Disconnect the all SAS control module connectors.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 5.
3
INSPECT MAZDA ERA-GLONASS CONTROL MODULE CONNECTOR CONDITION
•  Disconnect the Mazda ERA-GLONASS control module connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 5.
4
INSPECT EVENT NOTIFICATION SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY
•  Verify that the SAS control module and Mazda ERA-GLONASS control module connectors are disconnected.
•  Reconnect the negative battery terminal.
•  Switch the ignition ON (engine off or on).
•  Measure the voltage at the Mazda ERA-GLONASS control module terminal 1AA (wiring harness-side).
•  Is the voltage 0 V?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify if there is a common connector between Mazda ERA-GLONASS control module terminal 1AA and SAS control module terminal 3AF.
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to power supply to determine the malfunctioning location.
•  Repair or replace the malfunctioning location.
If there is no common connector:
•  Repair or replace the wiring harness which is shorted to power supply.
Go to the next step.
5
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Always reconnect all disconnected connectors.
•  Reconnect the negative battery terminal.
•  Clear the DTC for the Mazda ERA-GLONASS control module using the M-MDS.
•  Switch the ignition ON (engine off or on) and wait for 25 s or more.
•  Perform the DTC inspection for the Mazda ERA-GLONASS control module using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the Mazda ERA-GLONASS control module.
Go to the next step.
No
Go to the next step.
6
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [MAZDA ERA-GLONASS CONTROL MODULE])
No
DTC troubleshooting completed.