DTC P0710: Problem In ATF Temperature Sensor Circuit

WARNING: This page is about a different car, the 2004 Honda Odyssey, 2003 Honda Odyssey, and 2002 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Record all freeze data and review General Troubleshooting Information (see General Troubleshooting Information ) before you troubleshoot. This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Check whether the scan tool or the HDS indicates a code for the fuel and emissions system.
Does the scan tool or the HDS indicate a code for the fuel and emissions system?

YES - Perform the Troubleshooting Flowchart for the fuel and emissions system. Recheck for code P0710 after troubleshooting.

NO - Go to step 2.
Disconnect the 2P connector from the ATF temperature sensor harness.
Measure ATF temperature sensor resistance at the sensor connector.
Is the resistance 50 Ω-2.5 kΩ?

YES - Go to step 4.

NO - Replace the ATF temperature sensor (see ATF Temperature Sensor Replacement ).

Fig 1: Measuring ATF Temperature Sensor Resistance At Sensor Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch ON (II).
Measure the voltage between terminal No. 2 ATF temperature sensor connector and body ground.
Is there about 5 V?

YES - Go to step 6.

NO - Go to step 7.

Fig 2: Measuring Voltage Between Terminal No. 2 ATF Temperature Sensor Connector & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the voltage between ATF temperature sensor connector terminals No. 1 and No. 2.
Is there about 5 V?

YES - Check for loose terminal fit at the PCM connectors C24, C18, and at the ATF temperature sensor. If necessary, substitute a known-good PCM and recheck. If the DTC recurs, substitute a known-good ATF temperature sensor.

NO - Repair open or loose terminal fit in the wire between the C18 terminal and the ATF temperature sensor.

Fig 3: Measuring Voltage Between ATF Temperature Sensor Connector Terminals No. 1 & No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the voltage between PCM connector terminal C24 and body ground.
Is there about 5 V?

YES - Repair open in the wire between PCM connector terminal C24 terminal and the ATF temperature sensor. Check fit at all terminals from C24 to the sensor.

NO - Go to step 8.

Fig 4: Measuring Voltage Between PCM Connector Terminal C24 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch OFF.
Disconnect PCM connector C (31P).
Check for continuity between PCM connector terminal C24 and body ground.
Is there continuity?

YES - Repair short to ground in the wire between PCM connector terminal C24 and the ATF temperature sensor.

NO - Check for loose terminal fit in the PCM connectors C24 and C18. If necessary, substitute a known-good PCM or ATF temperature sensor and recheck only if the code resets after being cleared.

Fig 5: Checking Continuity Between PCM Connector Terminal C24 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.