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Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0763 - DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has FREEZE FRAME DATA been recorded?
 Yes Go to the next step.
No Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 VERIFY RELATED REPAIR INFORMATION AVAILABILITY 
  • Check for related Service Bulletins and/or on-line repair information availability.
  • Is any related repair information available?
 Yes Perform repair or diagnosis according to the available repair information.
  • If vehicle is not repaired, go to the next step.
No Go to the next step.
3 INSPECT TERMINAL COMPONENT NO.1 (12-PIN) FOR POOR CONNECTION 
  • Turn ignition switch to OFF.
  • Disconnect the terminal component No. 1 (12-pin).
  • Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.).
  • Are terminals okay?
 Yes Go to the next step.
No Repair or replace the terminals, then go to Step 13.
4 INSPECT RESISTANCE 
  • Check resistance between terminal component No.1 (12-pin) terminal F (transaxle case side) and body ground.
  • Is resistance within 14-18 ohms? 

(See SOLENOID VALVE INSPECTION .)		 Yes Go to Step 9.
No Go to the next step.
5 INSPECT COUPLER COMPONENT (10-PIN) FOR POOR CONNECTION 
  • Disconnect the coupler component (10-pin) connector.
  • Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.).
  • Is terminal okay?
 Yes Go to the next step.
No Repair or replace the terminal, then go to Step 13.
6 INSPECT RESISTANCE 
  • Check resistance between coupler component (10-pin) terminal H (part side) and body ground.
  • Is resistance within 14-18 ohms? 

(See SOLENOID VALVE INSPECTION .)		 Yes Repair or replace the terminal component No.1 (12-pin), then go to Step 13.
No Go to the next step.
7 INSPECT SHIFT SOLENOID C CONNECTOR FOR POOR CONNECTION 
  • Disconnect the shift solenoid C connector.
  • Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.).
  • Is terminal okay?
 Yes Go to the next step.
No Repair or replace the terminal, then go to Step 13.
8 INSPECT RESISTANCE 
  • Check resistance between shift solenoid C connector terminal A (part side) and body ground.
  • Is resistance within 14-18 ohms? 

(See SOLENOID VALVE INSPECTION .)		 Yes Repair or replace the coupler component (10-pin), then go to Step 13.
No Verify shift solenoid C installation.
  • If shift solenoid C is installed correctly, replace the pressure control solenoid, then go to Step 13

(See SOLENOID VALVE REMOVAL/INSTALLATION .)
9 INSPECT TCM CONNECTOR FOR POOR CONNECTION 
  • Disconnect the TCM connector.
  • Check for poor connection (damaged, pulled-out, terminals, corrosion, etc.).
  • Are terminals okay?
 Yes Go to the next step.
No Repair the terminals, then go to Step 13.
10 INSPECT TERMINAL COMPONENT NO.1 (12-PIN) CIRCUIT FOR OPEN CIRCUIT 
  • Check continuity between TCM terminal 2X (harness-side) and terminal component No.1 (12-pin) terminal F (harness-side).
  • Is there continuity between terminals?
 Yes Go to the next step.
No Repair or replace the harness, then go to Step 13.
11 INSPECT TERMINAL COMPONENT NO.1 (12-PIN) CIRCUIT FOR SHORT TO POWER 
  • Turn ignition switch to ON (engine OFF).
  • Check voltage at terminal component No. 1 (12-pin) terminal F (harness-side).
  • Is voltage 0 V?
 Yes Go to the next step.
No Repair or replace the harness, then go to Step 13.
12 INSPECT TCM CIRCUIT FOR SHORT TO GROUND 
  • Turn ignition switch to OFF.
  • Check continuity between TCM terminal 2X (harness-side) and body ground.
  • Is there continuity?
 Yes Repair or replace the harness, then go to the next step.
No Go to the next step.
13 VERIFY TROUBLESHOOTING OF DTC P0763 COMPLETED 
  • Make sure to reconnect all disconnected connectors.
  • Clear DTC from memory using WDS or equivalent.
  • Drive vehicle in D range and make sure that gears shift smoothly from 1GR to 5GR.
  • Is same DTC present?
 Yes Replace the TCM, then go to the next step.
(See TCM REMOVAL/INSTALLATION .)
No Go to the next step.
14 VERIFY AFTER REPAIR PROCEDURE  Yes Go to the applicable DTC inspection.
No Troubleshooting completed.
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