Engine Cooling Fan System (Diagnostics & Circuit Tests): Other Scion FR-S I

PROCEDURE

1. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE ELECTRIC COOLING FAN) Connect the Techstream to the DLC3. Turn the ignition switch to ON. Turn the Techstream on. Enter the following menus: Powertrain / Engine / Active Test / Control the Electric Cooling Fan. Check the operation of the cooling fans while operating them using the Techstream. OK Tester Operation Specified Condition ON Cooling fans operate OFF Cooling fans stop NG --> See step 19 OK: Go to next step
2. INSPECT ENGINE ROOM RELAY BLOCK (FAN NO. 1 RELAY VOLTAGE) Remove the FAN No. 1 relay from the engine room relay block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition 5 (FAN NO. 1 relay terminal) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Engine Room Relay Block *2 FAN No. 1 Relay Terminals Reinstall the FAN No. 1 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - FAN NO. 1 RELAY) OK: Go to next step
3. INSPECT ENGINE ROOM RELAY BLOCK (FAN NO. 3 RELAY VOLTAGE) Remove the FAN No. 3 relay from the engine room relay block. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Switch Condition Specified Condition 5 (FAN NO. 3 relay terminal) - Body ground Always 11 to 14 V TEXT IN ILLUSTRATION *1 Engine Room Relay Block *2 FAN No. 3 Relay Terminals Reinstall the FAN No. 3 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - FAN NO. 3 RELAY) OK: Go to next step
4. CHECK HARNESS AND CONNECTOR (FAN NO. 1, NO. 2 OR NO. 3 RELAY) Remove the FAN No. 1, FAN No. 2 and FAN No. 3 relays from the engine room relay block. Turn the ignition switch to ON. Measure the voltage according to the value(s) in the table below. Standard Voltage Tester Connection Condition Specified Condition 2 (FAN NO. 1 relay terminal) - Body ground Ignition switch ON 11 to 14 V 1 (FAN NO. 2 relay terminal) - Body ground Ignition switch ON 11 to 14 V 2 (FAN NO. 3 relay terminal) - Body ground Ignition switch ON 11 to 14 V TEXT IN ILLUSTRATION *1 Engine Room Relay Block *2 FAN No. 1 Relay Terminals *3 FAN No. 2 Relay Terminals *4 FAN No. 3 Relay Terminals Reinstall the FAN No. 1, FAN No. 2 and FAN No. 3 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FAN NO. 1, NO. 2 OR NO. 3 RELAY) OK: Go to next step
5. INSPECT FAN NO. 1 RELAY Inspect the FAN No. 1 relay. Refer to «ON-VEHICLE INSPECTION [07/2013 - ] - Step 1»(ref-612353-S41493941362014042900000) . NG --> REPLACE FAN NO. 1 RELAY OK: Go to next step
6. INSPECT FAN NO. 2 RELAY Inspect the FAN No. 2 relay. Refer to «ON-VEHICLE INSPECTION [07/2013 - ] - Step 2»(ref-612353-S41493941362014042900000) . NG --> REPLACE FAN NO. 2 RELAY OK: Go to next step
7. INSPECT FAN NO. 3 RELAY Inspect the FAN No. 3 relay. Refer to «ON-VEHICLE INSPECTION [07/2013 - ] - Step 3»(ref-612353-S41493941362014042900000) . NG --> REPLACE FAN NO. 3 RELAY OK: Go to next step
8. CHECK HARNESS AND CONNECTOR (FAN NO. 2 RELAY - BODY GROUND) Remove the FAN No. 2 relay from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 5 (FAN NO. 2 relay terminal) - Body ground Always Below 1 ohms Reinstall the FAN No. 2 relay. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (FAN NO. 2 RELAY - BODY GROUND) OK: Go to next step
9. INSPECT COOLING FAN MOTOR Inspect the cooling fan motor. Refer to «ON-VEHICLE INSPECTION [07/2013 - ] - Step 1»(ref-612353-S01105083992014042900000) . NG --> See step 17 OK: Go to next step
10. CHECK HARNESS AND CONNECTOR (COOLING FAN MOTOR - BODY GROUND) Disconnect the A45 cooling fan motor connector. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A45-1 - Body ground Always Below 1 ohms Reconnect the A45 cooling fan motor connector. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COOLING FAN MOTOR - BODY GROUND) OK: Go to next step
11. CHECK HARNESS AND CONNECTOR (COOLING FAN MOTOR - ENGINE ROOM RELAY BLOCK) Disconnect the A45 cooling fan motor connector. Remove the FAN No. 1 and FAN No. 2 relays from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A45-2 - 3 (FAN NO. 1 relay terminal) Always Below 1 ohms A45-2 - 4 (FAN NO. 2 relay terminal) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A45-2 or 3 (FAN NO. 1 relay terminal) or 4 (FAN NO. 2 relay terminal) - Body ground Always 10 kohms or higher Reconnect the A45 cooling fan motor connector. Reinstall the FAN No. 1 and FAN No. 2 relays. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (COOLING FAN MOTOR - ENGINE ROOM RELAY BLOCK) OK: Go to next step
12. INSPECT NO. 2 COOLING FAN MOTOR Inspect the No. 2 cooling fan motor. Refer to «ON-VEHICLE INSPECTION [07/2013 - ] - Step 2»(ref-612353-S01105083992014042900000) . NG --> See step 18 OK: Go to next step
13. CHECK HARNESS AND CONNECTOR (NO. 2 COOLING FAN MOTOR - ENGINE ROOM RELAY BLOCK) Disconnect the A46 No. 2 cooling fan motor connector. Remove the FAN No. 2 and FAN No. 3 relays from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A46-1 - 3 (FAN NO. 2 relay terminal) Always Below 1 ohms A46-2 - 3 (FAN NO. 3 relay terminal) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A46-1 or 3 (FAN NO. 2 relay terminal) - Body ground Always 10 kohms or higher A46-2 or 3 (FAN NO. 3 relay terminal) - Body ground Always 10 kohms or higher Reconnect the A46 No. 2 cooling fan motor connector. Reinstall the FAN No. 2 and FAN No. 3 relays. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (NO. 2 COOLING FAN MOTOR - ENGINE ROOM RELAY BLOCK) OK: Go to next step
14. INSPECT ENGINE ROOM RELAY BLOCK (FAN NO. 1 RELAY - FAN NO. 2 RELAY) Remove the FAN No. 1 and FAN No. 2 relays from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition 1 (FAN NO. 1 relay terminal) - 2 (FAN NO. 2 relay terminal) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition 1 (FAN NO. 1 relay terminal) or 2 (FAN NO. 2 relay terminal) - Body ground Always 10 kohms or higher TEXT IN ILLUSTRATION *1 Engine Room Relay Block *2 FAN NO. 1 Relay Terminals *3 FAN NO. 2 Relay Terminals Reinstall the FAN No. 1 and FAN No. 2 relays. NG --> REPLACE ENGINE ROOM RELAY BLOCK OK: Go to next step
15. CHECK HARNESS AND CONNECTOR (ECM - ENGINE ROOM RELAY BLOCK) Disconnect the A35 ECM connector. Remove the FAN No. 2 and FAN No. 3 relays from the engine room relay block. Measure the resistance according to the value(s) in the table below. Standard Resistance (Check for Open) Tester Connection Condition Specified Condition A35-11 (FAN1) - 1 (FAN NO. 1 relay terminal) Always Below 1 ohms A35-11 (FAN1) - 2 (FAN NO. 2 relay terminal) Always Below 1 ohms A35-12 (FAN2) - 1 (FAN NO. 3 relay terminal) Always Below 1 ohms Standard Resistance (Check for Short) Tester Connection Condition Specified Condition A35-11 (FAN1) or 1 (FAN NO. 1 relay terminal) or 2 (FAN NO. 2 relay terminal) - Body ground Always 10 kohms or higher A35-12 (FAN2) or 1 (FAN NO. 3 relay terminal) - Body ground Always 10 kohms or higher Reconnect the A35 ECM connector. Reinstall the FAN No. 2 and FAN No. 3 relays. NG --> REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - ENGINE ROOM RELAY BLOCK) OK --> See step 16
16. REPLACE ECM. Refer to «REMOVAL [07/2013 - 12/2013]»(ref-612354-S32372465292014042900000)
17. REPLACE COOLING FAN MOTOR. Refer to «REMOVAL [07/2013 - ]»(ref-612353-S32344750322014042900000)
18. REPLACE NO. 2 COOLING FAN MOTOR. Refer to «REMOVAL [07/2013 - ]»(ref-612353-S32344750322014042900000)
19. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to «PROBLEM SYMPTOMS TABLE [07/2013 - ]»(ref-612391-S07902551802014042900000)