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

id050207805800

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 SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service 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.
(See TRANSAXLE RANGE (TR) SWITCH REMOVAL[LA4AX-EL (CD4E)].)
(See TRANSAXLE RANGE (TR) SWITCH INSTALLATION[LA4AX-EL (CD4E)].)
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 M-MDS.
•  Perform the “After Repair Procedure”.
•  Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)
No
Go to the next step.
10
VERIFY DTCS
•  Are except DTC P0707, P0708 and P1702 output?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE[LA4AX-EL (CD4E)].)
No
DTC troubleshooting completed.