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Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0817 [AW6A-EL] DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA HAS BEEN RECORDED 
  • Has the 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 
  • Verify 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 the vehicle is not repaired, go to the next step.
No Go to the next step.
3 INSPECT VOLTAGE OF STARTER RELAY NO. 2 CIRCUIT 
  • Turn the ignition switch to the ON position (engine off).
  • Shift the selector lever to P or N position.
  • Inspect for voltage TCM short cord connector terminal C (wiring harness-side).
  • Is the voltage 0 V? 
 Yes Go to go to Step 7.
No Go to the next step.
4 INSPECT TERMINAL TCM SHORT CORD CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to the LOCK position.
  • Disconnect the TCM short cord connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Are terminals normal?
 Yes Go to the next step.
No Replace the couple component, then go to Step 18.
5 INSPECT TCM CONNECTOR FOR POOR CONNECTION 
  • Disconnect the TCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Are terminals normal?
 Yes Go to the next step.
No Replace the couple component, then go to Step 18.
6 INSPECT TCM SHORT CORD CIRCUIT FOR OPEN CIRCUIT 
  • Inspect for continuity between TCM short cord connector terminal C and TCM terminal A5 (wiring harness-side).
  • Is there continuity?
 Yes Go to Step 18.
No Repair or replace the wiring harness, then go to Step 18.
7 INSPECT VOLTAGE OF STARTER RELAY NO. 2 CIRCUIT 
  • Shift the selector lever to D range or R position.
  • Inspect for voltage TCM short cord connector terminal C (wiring harness-side).
  • Is the voltage B+  ?
 Yes Go to go to Step 18.
No Go to the next step.
8 INSPECT VOLTAGE OF STARTER RELAY NO. 2 TERMINAL E 
  • Inspect for voltage starter relay No. 2 terminal E (wiring harness-side).
  • Is the voltage B+  ?
 Yes Go to the next step.
No Repair or replace the wiring harness, then go to Step 18.
9 INSPECT STARTER RELAY NO. 2 FOR POOR CONNECTION 
  • Turn the ignition switch to the LOCK position.
  • Disconnect the starter relay No. 2 connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Are terminals normal?
 Yes Go to the next step.
No Replace the couple component, then go to Step 18.
10 INSPECT STARTER RELAY NO. 2 
 Yes Go to the next step.
No Replace the starter relay No. 2, then go to Step 18.
11 INSPECT TERMINAL TCM SHORT CORD CONNECTOR FOR POOR CONNECTION 
  • Turn the ignition switch to the LOCK position.
  • Disconnect the TCM short cord connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Are terminals normal?
 Yes Go to the next step.
No Replace the couple component, then go to Step 18.
12 INSPECT STARTER RELAY NO. 2 CIRCUIT FOR OPEN CIRCUIT 
  • Inspect for continuity between TCM short cord connector terminal C and starter relay No. 2 terminal A (wiring harness-side).
  • Is there continuity?
 Yes Go to the next step.
No Repair or replace the harness, then go to Step 18.
13 INSPECT STARTER RELAY NO. 2 CIRCUIT FOR SHORT TO GROUND 
  • Inspect for continuity between starter relay No. 2 terminal A (wiring harness-side) and body ground.
  • Is there continuity?
 Yes Repair or replace the harness, then go to Step 18.
No Go to the next step.
14 INSPECT STARTER RELAY NO. 2 CIRCUIT FOR SHORT TO POWER 
  • Turn the ignition switch to the ON position (engine off).
  • Inspect the voltage at starter relay No. 2 terminal A (wiring harness-side).
  • Is the voltage 0 V? 
 Yes Go to the next step.
No Repair or replace the wiring harness, then go to Step 18.
15 INSPECT TCM CONNECTOR FOR POOR CONNECTION 
  • Disconnect the TCM connector.
  • Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
  • Are terminals normal?
 Yes Go to the next step.
No Replace the couple component, then go to Step 18.
16 INSPECT TCM SHORT CORD CIRCUIT FOR SHORT TO GROUND 
  • Inspect for continuity between TCM short cord connector terminal C (wiring harness-side) and body ground.
  • Is there continuity?
 Yes Repair or replace the harness, then go to Step 18.
No Go to the next step.
17 INSPECT TCM SHORT CORD CIRCUIT FOR SHORT TO POWER 
  • Turn the ignition switch to the ON position (engine off).
  • Inspect the voltage at TCM short cord connector terminal C (wiring harness-side).
  • Is the voltage 0 V  ?
 Yes Go to the next step.
No Repair or replace the wiring harness, then go to the next step.
18 VERIFY TROUBLESHOOTING OF DTC P0817 COMPLETED 
  • Make sure to reconnect all the disconnected connectors.
  • Clear the DTC from the memory using the WDS or equivalent.
  • Drive the vehicle in D range.
  • Is same DTC present?
 Yes Replace the TCM, then go to the next step.
(See TCM REMOVAL/INSTALLATION .)
No Go to the next step.
19 VERIFY AFTER REPAIR PROCEDURE 
 Yes Go to the applicable DTC inspection.
(See DTC TABLE .)
No Troubleshooting completed.
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