DTC P0707, P0708, P1702 [LA4AX-EL (CD4E)]

id0502a3805800

DTC P0707

Transaxle range (TR) switch circuit malfunction (short to ground)

DTC P0708

Transaxle range (TR) switch circuit malfunction (open circuit/short to power supply)

DTC P1702

Transaxle range (TR) switch signal malfunction

DETECTION CONDITION

• P0707: Short to ground in wiring harness between TR switch terminal and PCM terminal or short to ground in TR switch internal circuit
• P0708: Open circuit in wiring harness between TR switch and PCM terminal or in TR switch internal circuit
• P1702: PCM cannot detect a signal from TR switch

POSSIBLE CAUSE

• TR switch malfunction
• Short to ground in wiring harness between TR switch terminal D and PCM terminal 64
• Short to ground in wiring harness between TR switch terminal A and PCM terminal 91
• Open circuit in wiring harness between TR switch terminal D and PCM terminal 64
• Open circuit in wiring harness between TR switch terminal A and PCM terminal 91
• Short to power supply in wiring harness between TR switch terminal D and PCM terminal 64
• Short to power supply in wiring harness between TR switch terminal A and PCM terminal 91
• Damaged connectors between TR switch and PCM
• PCM malfunction

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 TR SWITCH CONNECTOR FOR POOR CONNECTION
• Turn the ignition switch to the LOCK position.
• Disconnect the TR switch connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion)
• Is the connection normal?
Yes
Go to the next step.
No
Repair or replace connector and/or terminal, then go to Step 9.
4

INSPECT TR SWITCH

• Inspect the TR switch.
• Is TR switch normal?
Yes
Go to the next step.
No
Replace the TR switch, then go to Step 9.
5

INSPECT PCM CONNECTOR FOR POOR CONNECTION

• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is the connection normal?
Yes
Go to the next step.
No
Repair or replace the connector and/or terminals, then go to Step 9.
6
INSPECT TR SWITCH CIRCUIT FOR SHORT TO GROUND
• Inspect continuity between TR sensor terminals (wiring harness-side) and body ground.
- A and body ground
- D and body ground
• Is there continuity?
Yes
Repair or replace the wiring harness, then go to Step 9.
No
Go to the next step.
7

INSPECT TR SWITCH CIRCUIT FOR OPEN CIRCUIT

• Inspect the following TR switch terminals (wiring harness-side) and PCM terminals (wiring harness-side):
- A and 91
- D and 64
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 9.
8

INSPECT TR SWITCH CIRCUIT FOR SHORT TO POWER SUPPLY

• Turn the ignition switch to the ON position (engine off).
• Inspect the voltage at TR switch terminals A and D (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.
9

VERIFY TROUBLESHOOTING OF DTC P0707 P0708 OR P1702 COMPLETED

• Make sure to reconnect all the disconnected connectors.
• Clear the DTC from the memory using the WDS or equivalent.
• Perform the "After Repair Procedure".
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
10
VERIFY DTCS
• Are except DTC P0707, P0708 and P1702 output?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.