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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 632 (On-Board Diagnostic (Engine Control System MZI-3.7) (5 Of 5)) >> DTC P1703:00 [MZI-3.7] >> Diagnostic procedure

Diagnostic procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA been recorded?
Yes Go to next step.
No Record FREEZE FRAME DATA on the repair order, then go to next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Verify related Service Bulletins availability
  • Is any related Service Bulletins available?
Yes Perform repair or diagnosis according to available Service Bulletins.
  • If vehicle is not repaired, go to next step
No Go to next step.
3 VERIFY THE BRAKE PEDAL WAS APPLIED 
  • Was the brake pedal applied and released during the KOEO self-test?
Yes Go to next step.
No Perform the KOER self-test.
Apply and release the brake pedal during the KORE test, then go to Step 10
(See KOEO/KOER SELF TEST [MZI-3.7] .)
4 INSPECT THE OPERATION OF THE BLAKE/TAILLIGHT 
  • Switch the ignition ON (Engine off)
  • Depress and release the brake pedal and check the brake/taillight operation
  • Do the brake/taillight operate correctly?
Yes Go to next step.
No Repair or replace harness or brake/taillight, then go to Step 10.
5 INSPECT THE CRUISE CONTROL OPERATION 
  • Check for cruise control operation
  • Does the cruise control operate correctly?
Yes Go to next step.
No Repair or replace suspected part, then go to Step 10.
6 INSPECT BRAKE SWITCH AND PCM CONNECTOR FOR POOR CONNECTION 
  • Switch the ignition off.
  • Disconnect the brake switch connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Are there any malfunction?
Yes Repair or replace suspected part, then go to Step 10.
No Go to the next step.
7 INSPECT BRAKE SWITCH NO. 1 CIRCUIT MALFUNCTION 
  • Switch the ignition ON (Engine off)
  • Measure the voltage between PCM terminal 1S (wiring harness-side) and body ground
  • Verify the following values when the brake pedal to the floor and releasing
    • Brake pedal fully depressed. more than 10 V
    • Brake pedal fully released. less than 10 V
  • Is the voltage normal?
Yes Go to next step
No Repair or replace suspected part, then go to Step 10.
8 INSPECT BRAKE SWITCH 
Yes Repair or replace suspected part, then go to Step 10.
No Go to the next step.
9 INSPECT FOR CORRECT PCM OPERATION 
  • Disconnect all the PCM connectors.
  • Visually inspect for:
    • Pushed out pins
    • Corrosion
  • Connect all the PCM connectors and verify that they seat correctly.
  • Retrieve DTCs using the M-MDS.
  • Is the PENDING CODE for this DTC present?
Yes Go to the next step.
No The system is correctly. Go to the next step
10 VERIFY TROUBLESHOOTING OF DTC P1703:00 HAS BEEN COMPLETED 
  • Verify that all disconnected connectors reconnected.
  • Clear DTC from memory using M-MDS.
  • Perform "KOEO/KOER Self-Test".

    (See KOEO/KOER SELF TEST [MZI-3.7] .)

  • Is PENDING CODE same as DTC present?
Yes Replace the PCM, then go to next step.
(See PCM REMOVAL/INSTALLATION [MZI-3.7] .)
No Go to next step.
11 VERIFY AFTER REPAIR PROCEDURE 
Yes Go to the applicable DTC inspection
(See DTC TABLE [MZI-3.7] .)
No Troubleshooting completed