DTC P0708 [FN4A-EL]

id0502a1801100

DTC P0708

Transaxle range (TR) switch circuit high input

DETECTION CONDITION

• When all conditions below are satisfied and 100 s or more have passed:
- Vehicle speed 20 km/h {12 mph} or above.
- Engine speed 530 rpm or above.
- Voltage at PCM terminal 1X is 4.79 V or above.
Diagnostic support note:
• This is a continuous monitor (CCM).
• MIL illuminates if PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is not available.
• FREEZE FRAME DATA is available.
• HOLD indicator light flashes.
• DTC is stored in the PCM memory.

POSSIBLE CAUSE

• TR switch malfunction
• Open circuit between TR switch terminal C and PCM terminal 1X
• Short to power circuit between TR switch terminal C and PCM terminal 1X
• Open circuit between TR switch terminal B and PCM terminal 1AN
• Poor connection of TR switch or PCM connectors
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN RECORDED

• Has FREEZE FRAME PID DATA been recorded?
Yes
Go to next step.
No
Record FREEZE FRAME PID DATA on repair order, then go to next step.
2

VERIFY RELATED REPAIR INFORMATION AVAILABILITY

• Check for related Service Bulletins availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to available repair information.
• If vehicle is not repaired, go to next step.
No
Go to next step.
3

INSPECT TR SWITCH CONNECTOR FOR POOR CONNECTION

• Turn ignition key OFF.
• Disconnect TR switch connector.
• Check for poor connection (damaged/pulled-out pins, corrosion, etc.).
• Are TR switch terminals normal?
Yes
Go to next step.
No
Repair terminals or replace TR switch, then go to Step 9.
4

INSPECT TR SWITCH

• Turn the ignition switch off.
• Disconnect TR switch connector.
• Inspect for resistance between TR switch terminals B and C (part-side).
• Is resistance normal?
Yes
Go to next step.
No
Adjust TR switch, then go to Step 9.
5

INSPECT TR SWITCH SIGNAL CIRCUIT FOR SHORT TO POWER

• Turn the ignition switch to the ON position (Engine OFF).
• Measure the voltage between TR switch terminal C (harness-side) and body ground.
• Is there voltage B+?
Yes
Repair or replace harness for short to power, then go to step 9.
No
Go to next step.
6

INSPECT PCM CONNECTOR FOR POOR CONNECTION

• Disconnect PCM connector.
• Check for poor connection at terminals 1X and 1AN (damaged/pulled-out pins, corrosion, etc.).
• Is there any malfunction?
Yes
Repair or replace terminal, then go to step 9.
No
Go to next step.
7

INSPECT TR SWITCH SIGNAL CIRCUIT FOR OPEN CIRCUIT

• Check for continuity between TR switch terminal C (harness-side) and PCM terminal 1X.
• Is there continuity?
Yes
Go to next step.
No
Repair or replace harness for open, then go to step 9.
8

INSPECT TR SWITCH GROUND CIRCUIT FOR OPEN CIRCUIT

• Check for continuity between TR switch terminal B (harness-side) and PCM terminal 1AN.
• Is there continuity?
Yes
Go to next step.
No
Repair or replace harness for open, then go to next step.
9

VERIFY TROUBLESHOOTING OF DTC P0708 COMPLETED

• Make sure to reconnect all disconnected connectors.
• Clear DTC from memory using WDS or equivalent.
• Drive vehicle for 100 s or more under following conditions.
- Engine speed (RPM PID) 530 rpm or above
- Vehicle speed (VSS PID) 20 km/h {12 mph} or above
• Is pending code present?
Yes
Replace PCM, then go to next step.
No
No concern is detected. Go to next step.
10

VERIFY AFTER REPAIR PROCEDURE

• Perform "After Repair Procedure".
• Are any DTCs present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.