STEP 1. Check the battery temperature sensor.
STEP 2. Measure the sensor supply voltage at battery temperature sensor harness side connector.
(1) Disconnect the battery temperature sensor connector and measure at the harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal BTS line and ground.- Voltage should be between 4.5 and 4.9 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the measured voltage between 4.5 and 4.9 volts?
Go to Step 5. Go to Step 3.
STEP 3. Check of short to ground and open circuit in BTS line between battery temperature sensor connector and ECM connector.
STEP 4. Using scan tool (M.U.T.-III), read the diagnostic trouble code (DTC).
caution | To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III). |
(1) Connect scan tool (M.U.T.-III). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) . (2) Start the engine and run at idle.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is DTC P0515 stored?
Replace the ECM (Refer to Removal and Installation ). Then go to Step 8. It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunctions .
STEP 5. Check the continuity at battery temperature sensor harness side connector.
STEP 6. Check of open circuit and harness damage in ECBE line between battery temperature sensor connector and ECM connector.
STEP 7. Check of harness damage in BTS line between battery temperature sensor connector and ECM connector.
STEP 8. Using scan tool (M.U.T.-III), read the diagnostic trouble code (DTC).
(1) Connect scan tool (M.U.T.-III). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) . (2) Start the engine and run at idle.
(3) After the DTC has been deleted, read the DTC again.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is the DTC P0515 stored?
Retry the troubleshooting. The inspection is complete.