Intention of troubleshooting procedure

Step 1 -2
- Perform an ECT sensor No. 2-related inspection.
Step 3-5
- Perform an engine coolant-related inspection.
Step 6
- Perform a unit inspection of the coolant control valve.
Repair completion verification
- Verify that the primary malfunction is resolved and there are no other malfunctions.

TROUBLESHOOTING DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	PURPOSE: VERIFY IF ECT SENSOR No. 2 IS INSTALLED CORRECTLY Verify the ECT sensor No. 2 installation condition. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION (VIN M) .) (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION (VIN L) .) Is the installation condition normal?	Yes	Go to the next step.
1		No	Correctly install the ECT sensor No. 2 and perform the repair completion verification. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION (VIN M) .) (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION (VIN L) .)
2	PURPOSE: INSPECT ECT SENSOR No. 2 FOR MALFUNCTION Inspect the applicable part. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION (VIN M) .) (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION (VIN L) .) Is the part normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION (VIN M) .) (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION (VIN L) .)
3	PURPOSE: VERIFY IF MALFUNCTION CAUSED BY POOR ENGINE COOLANT PASSAGE ASSEMBLY Verify the connection condition of the engine coolant passage (such as hoses). (See COOLING SYSTEM LOCATION INDEX (VIN M) .) (See COOLING SYSTEM LOCATION INDEX (VIN L) .) Is there any malfunction?	Yes	Reconnect the engine coolant passage correctly. Replace the engine coolant and perform the repair completion verification. (See ENGINE COOLANT REPLACEMENT (VIN M) .) (See ENGINE COOLANT REPLACEMENT (VIN L) .)
3		No	Go to the next step.
4	PURPOSE: VERIFY IF MALFUNCTION RELATED TO ENGINE COOLANT AFFECTS DIAGNOSTIC RESULTS Inspect the following: Is the system filled with the specified engine coolant? Is there the possibility of freezing (low engine coolant concentration)? Has foreign matter penetrated the engine coolant? Are all items normal?	Yes	Go to the next step.
4		No	Replace the engine coolant and perform the repair completion verification. (Advise the customer to use specified engine coolant used.) (See ENGINE COOLANT REPLACEMENT (VIN M) .) (See ENGINE COOLANT REPLACEMENT (VIN L) .)
5	PURPOSE: VERIFY IF MALFUNCTION RELATED TO ENGINE COOLANT LEAKAGE FROM ENGINE COOLANT PASSAGE AFFECTS DIAGNOSTIC RESULTS Perform the "ENGINE COOLANT LEAKAGE INSPECTION". (See ENGINE COOLANT LEAKAGE INSPECTION (VIN M) .) (See ENGINE COOLANT LEAKAGE INSPECTION (VIN L) .) Is there engine coolant leaking from the engine coolant passage?	Yes	Repair or replace the malfunctioning location and refill the system with engine coolant. (See ENGINE COOLANT REPLACEMENT (VIN M) .) (See ENGINE COOLANT REPLACEMENT (VIN L) .) Go to repair completion verification.
5		No	Go to the next step.
6	PURPOSE: INSPECT COOLANT CONTROL VALVE FOR MALFUNCTION Inspect the applicable part. (See COOLANT CONTROL VALVE INSPECTION (VIN M) .) (See COOLANT CONTROL VALVE INSPECTION (VIN L) .) Is the part normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See COOLANT CONTROL VALVE REMOVAL/INSTALLATION (VIN M) .) (See COOLANT CONTROL VALVE REMOVAL/INSTALLATION (VIN L) .)
Repair completion verification 1	PURPOSE: VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Clear the DTC recorded in the memory. (See CLEARING DTC .) Replicate the vehicle conditions at the time the DTC was detected using the following procedure. Implement the repeatability verification procedure. (See REPEATABILITY VERIFICATION PROCEDURE .) Perform the DTC inspection for the PCM. (See DTC INSPECTION .) Is the same Pending DTC present?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION (VIN M) .) (See PCM REMOVAL/INSTALLATION (VIN L) .)
Repair completion verification 1		No	Go to the next step.
Repair completion verification 2	PURPOSE: VERIFY IF OTHER DTCs DISPLAYED Perform the DTC inspection. (See DTC INSPECTION .) Are any other DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
Repair completion verification 2		No	DTC troubleshooting completed.