Diagnostic procedure

WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

DTC P0706 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.
1		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.
2		No	Go to the next step.
3	INSPECT TCM CONNECTOR FOR POOR CONNECTION Turn the ignition switch to the LOCK position. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Are the connector and terminals normal?	Yes	Go to the next step.
3		No	Repair or replace the connector and/or terminal, then go to Step 13.
4	INSPECT TR SWITCH CIRCUIT Disconnect the TCM connector. Turn the ignition switch to the ON position (engine off). Inspect each TCM (wiring harness-side) terminal voltage. 1D P position: B+ Other positions and all ranges: 0 V 2C R position: B+ Other position and all ranges: 0 V 2B N position: B+ Other position and all range: 0 V 2E D range: B+ Other ranges and all positions: 0 V Are the above voltage indicated when the selector lever is shifted from P position to D range?	Yes	Turn the ignition switch to the LOCK position. Connect the TCM connector. Go to the intermittent concern troubleshooting procedure, then go to Step 13. (See INTERMITTENT CONCERN TROUBLESHOOTING .)
4		No	Go to the next step.
5	INSPECT TR SWITCH CIRCUIT Are all terminal voltage 0 V in Step 4?	Yes	Go to Step 10.
5		No	Go to the next step.
6	INSPECT TR SWITCH CIRCUIT Are there two or more terminals where the voltage is abnormal in Step 4?	Yes	Adjust the TR switch, then go to Step 13. (See TRANSMISSION RANGE (TR) SWITCH ADJUSTMENT .)
6		No	Go to the next step.
7	INSPECT TR SWITCH CONNECTOR FOR POOR CONNECTION Turn the ignition switch to the LOCK position. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Are the connector and terminals normal?	Yes	Go to the next step.
7		No	Repair or replace the connector and/or terminal, then go to Step 13.
8	INSPECT TR SWITCH CIRCUIT FOR SHORT TO GROUND Disconnect the TR switch connector. Inspect for continuity between the TCM (wiring harness-side) and body ground. P position: terminal 1D and body ground R position: terminal 2C and body ground N position: terminal 2B and body ground D range: terminal 2E and body ground Is there continuity?	Yes	Repair or replace the wiring harness, then go to Step 13.
8		No	Go to the next step.
9	INSPECT TR SWITCH CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between the TR switch (wiring harness-side) and TCM (wiring harness-side). P position: terminal A and terminal 1D R position: terminal E and terminal 2C N position: terminal D and terminal 2B D range: terminal G and terminal 2E Is there continuity?	Yes	Go to Step 12.
9		No	Repair or replace the wiring harness, then go to Step 13.
10	INSPECT TR SWITCH POWER CIRCUIT FOR OPEN CIRCUIT Turn the ignition switch to the LOCK position. Disconnect the TR switch connector. Turn the ignition switch to the ON position (engine off). Inspect the voltage at TR switch (wiring harness-side) terminal C. Is there B+ at TR switch (wiring harness-side) terminal C?	Yes	Go to the next step.
10		No	Inspect the main fuse. If normal, repair or replace the wiring harness, then go to Step 13.
11	INSPECT TR SWITCH CONNECTOR FOR POOR CONNECTION Turn the ignition switch to the LOCK position. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Are the connector and terminals normal?	Yes	Go to the next step.
11		No	Repair or replace the connector and/or terminal, then go to Step 13.
12	INSPECT TR SWITCH Inspect the TR switch. (See TRANSMISSION RANGE (TR) SWITCH INSPECTION .) Is the TR switch normal?	Yes	Go to the next step.
12		No	Replace the TR switch, then go to the next step. (See TRANSMISSION RANGE (TR) SWITCH REMOVAL/INSTALLATION .)
13	VERIFY TROUBLESHOOTING OF DTC P0706 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the TCM memory using the WDS or equivalent. Turn the ignition switch to the START position (engine on). Drive the vehicle in each range (P, R, N, and D) for 100 s or more . Is the same DTC present?	Yes	Replace the TCM, then go to the next step. (See TCM REMOVAL/INSTALLATION .)
13		No	Go to the next step.
14	VERIFY AFTER REPAIR PROCEDURE Perform the "After Repair Procedure". (See AFTER REPAIR PROCEDURE .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE .)
14		No	DTC troubleshooting completed.