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Home >> Mazda >> 2019 >> CX-9 Signature >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> On-Board Diagnostic - Rear One-Touch Walk-In Control Module >> DTC B10E7-12: IG1 Relay Circuit Malfunction [Rear One-Touch Walk-In Control Module] >> Diagnostic Procedure
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Diagnostic Procedure

DTC B10E7:12 [REAR ONE-TOUCH WALK-IN CONTROL MODULE] DIAGNOSTIC PROCEDURE

Step Inspection Action
1 INSPECT IG1 RELAY
Yes Go to the next step.
No Replace the IG1 relay, then go to Step 4. (See RELAY LOCATION .)
2 INSPECT REAR ONE-TOUCH WALK-IN CONTROL MODULE CONNECTOR CONDITION
  • Disconnect the rear one-touch walk-in 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 4.
3 INSPECT IG1 RELAY CIRCUIT FOR SHORT TO POWER SUPPLY
  • Always reconnect all disconnected connectors.
  • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Measure the voltage at the rear one-touch walk-in control module terminal 1G (wiring harness-side).
  • Is the voltage 0 V?
Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between IG1 relay terminal C-rear one-touch walk-in control module terminal 1G.
If there is a common connector:
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply.
  • Repair or replace the malfunctioning part.

If there is no common connector:
  • Repair or replace the wiring harness which has a short to power supply.

Go to the next step.
4 VERIFY THAT REPAIRS HAVE BEEN COMPLETED
Yes Repeat the inspection from Step 1.
No Go to the next step.
5 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [REAR ONE-TOUCH WALK-IN CONTROL MODULE] .)
No DTC troubleshooting completed.