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|Table 1: | |

|Table 2: | |

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|Powertrain Control Module Connector C1 End View |

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|[pic] |

|[pic] |

|Connector Part Information |    •  |

| |BLU PCM Connector C1 |

| | |

| | |

| |    •  |

| |Body - 12160549 |

| | |

| | |

| |    •  |

| |TPA - 12160569 |

| | |

| | |

| |    •  |

| |Terminals - 12084913 |

| | |

| | |

| |    •  |

| |Shield - 12160921 |

| | |

|Pin |Wire Color |Circuit No. |Function |

|1-3 |-- |-- |Not Used |

|4 |LT GRN |1222 |Shift Solenoid A Control (1-2 Shift Soleniod Valve) |

|5 |DK BLU |473 |High Speed Fans Control |

|6 |DK GRN |335 |Low Speed Fans Control |

|7 |BLK |630 |Camshaft Position PCM Input |

|8 |PPL/WHT |430 |3X Reference |

|9 |LT BLU/BLK |647 |24X Reference |

Electric Cooling Fan Diagnosis

[pic]

Circuit Description:

Power for the fan motors is supplied through Cool Fan 1 Maxifuse® and Cool Fan 2 Maxifuse®. The cooling fan relays are energized when current flows from the fuses in the Underhood Electrical Center and through the relay coils to ground through the PCM. The Low Speed fans control circuit is grounded for low speed fans operation. The Cool Fan 1 relay control circuit and the Cool Fan 2 and Cool Fan 3 circuits are all grounded for high speed fans operation.

During low speed fans operation the PCM supplies a ground path for the Cool fan 1 relay. This closes the Cool Fan 1 relay contacts, allowing current to flow from the 40 amp Cool Fan 1 Maxifuse® through the relay contacts to the Engine Coolant Fan Motor #1. During low speed operation, the ground path for Engine Coolant Fan Motor #1 is through the Cool Fan 2 relay and the Engine Coolant Fan Motor #1. The result is a series circuit with both cooling fans running at low speed.

During high speed cooling fan operation the PCM supplies a ground path for the Cool Fan 1 relay. The PCM also supplies a ground path for Cool Fan 2 and Cool Fan 3 relay. This closes all three cooling fan relays. Engine Coolant Fan Motor #1 continues to receive current from the 40 amp Cool Fan 1 fuse. However, Engine Coolant Fan Motor #2 receives current from the 30 amp Cool Fan 2 fuse. During high speed operation each cooling fan has its own ground path.

Diagnostic Aids

Check for the following conditions:

|    •  |Poor connection at the PCM, cooling fan relays, or cooling fan motors. Inspect harness connectors for backed out terminals, improper mating, broken |

| |locks, improperly formed or damaged terminals, and poor terminal to wire connection. |

|    •  |Damaged harness. Inspect the wiring harness for damage. |

Test Description

Number(s) below refer to the step number(s) on the Diagnostic Table:

1. Stored diagnostic trouble codes may affect engine cooling fans operation. This diagnostic table may lead to improper diagnosis and replacement of good parts if diagnostic trouble codes are present.

1. Ambient temperature must be above 9°C (48°F) before the PCM will enable the cooling fans due to A/C request. The PCM will enable the cooling fans if A/C refrigerant pressure increases regardless of ambient temperature.

1. This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is being replaced, the new PCM must be programmed.

| |Action |Value(s) |Yes |No |

|Electric Cooling Fan | | | | |

|Diagnosis | | | | |

|Step | | | | |

|1 |Was the Powertrain On Board Diagnostic (OBD) System|-- |Go to Step 2 |Go to the Powertrain On Board|

| |Check performed? | | |Diagnostic (OBD) System Check|

|2 |Are any PCM DTCs stored? |-- |Diagnose the PCM DTCs first |Go to Step 3 |

|3 |Ensure that the engine coolant temperature is below|-- |Go to Step 32 |Go to Step 4 |

| |100°C (212°F). | | | |

| |Turn the A/C off. | | | |

| |Engine running. | | | |

| |Observe the cooling fans. | | | |

| |Are the cooling fan(s) running? | | | |

|4 |Command Fan 1 on using the scan tool output tests |-- |Go to Step 5 |Go to Step 8 |

| |function. | | | |

| |Observe the cooling fans. | | | |

| |Are both cooling fans running at low speed? | | | |

|5 |Command Fan 2 on using the scan tool output tests |-- |Go to Step 6 |Go to Step 58 |

| |function. | | | |

| |Wait 6 seconds. | | | |

| |Observe the cooling fans | | | |

| |Are both fans running at high speed? | | | |

|6 |Important: :  Ambient temperature must be above 9°C|-- |Go to Diagnostic Aids |Go to Step 7 |

| |(48°F). | | | |

| |Exit scan tool output tests. | | | |

| |Engine running. | | | |

| |Turn the A/C on. | | | |

| |Are the cooling fans on? | | | |

|7 |View A/C Request on the scan tool. |-- |Go to Step 77 |Go to Air Conditioning (A/C) |

| |Does A/C Request on the scan tool display Yes? | | |Compressor Control Circuit |

| | | | |Diagnosis |

|8 |Is either cooling fan running? |-- |Go to Step 9 |Go to Step 16 |

|9 |Is the left cooling fan running? |-- |Go to Step 10 |Go to Step 14 |

|10 |Turn off the ignition switch. |-- |Go to Step 11 |Go to Step 80 |

| |Disconnect the right engine cooling fan. | | | |

| |Turn on the ignition switch. | | | |

| |Command Fan 1 on using the scan tool output tests | | | |

| |function. | | | |

| |Observe the cooling fans. | | | |

| |Is the left engine cooling fan running? | | | |

|11 |Remove the engine Fan 2 relay from the Underhood |-- |Go to Step 12 |Go to Step 13 |

| |Electrical Center. | | | |

| |Is the left engine cooling fan running? | | | |

|12 |Locate and repair short to ground in CKT 532. |-- |Go to Step 81 |-- |

| |Is the action complete? | | | |

|13 |Check CKT 504 for a short to ground. |-- |Go to Step 81 |Go to Step 70 |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|14 |Turn off the ignition switch. |-- |Go to Step 15 |Go to Step 71 |

| |Disconnect the left engine cooling fan. | | | |

| |Turn on the ignition switch. | | | |

| |Command Fan 1 on using the scan tool output tests | | | |

| |function. | | | |

| |Observe the cooling fans. | | | |

| |Is the right engine cooling fan running? | | | |

|15 |Locate and repair short to battery positive voltage|-- |Go to Step 81 |Go to Step 79 |

| |in circuit 532 and 504. If a problem is found | | | |

| |repair as necessary. | | | |

| |Was a problem found? | | | |

|16 |Turn the ignition on (engine not running). |-- |Go to Step 18 |Go to Step 17 |

| |Remove the low speed engine cooling fan relay #1 | | | |

| |from the Underhood Electrical Center. | | | |

| |Probe cooling fan relay cavity 30 with a test light| | | |

| |connected to ground. | | | |

| |Is the test light on? | | | |

|17 |Identify the cause of no battery positive voltage |-- |Go to Step 81 |-- |

| |to cooling fan relay #1 cavity 30: | | | |

| |•  | | | |

| |Blown Maxi fuse. If the fuse is blown, locate and | | | |

| |correct short circuit. | | | |

| | | | | |

| | | | | |

| |   -  | | | |

| |Stalled right engine or left engine cooling fan. | | | |

| | | | | |

| | | | | |

| |   -  | | | |

| |Shorted right engine or left engine cooling fan | | | |

| |motor windings. | | | |

| | | | | |

| | | | | |

| |   -  | | | |

| |Short to ground in CKT 342, CKT 532, or CKT 409. | | | |

| | | | | |

| | | | | |

| |•  | | | |

| |Open in CKT 342. | | | |

| | | | | |

| |Repair the cause of no battery positive voltage to | | | |

| |Cool Fan 1 relay cavity 30. | | | |

| |Is the action complete? | | | |

|18 |Probe Cool Fan 1 relay cavity 85 with a test light |-- |Go to Step 20 |Go to Step 19 |

| |connected to ground. | | | |

| |Is the test light on? | | | |

|19 |Identify the cause of no battery positive voltage |-- |Go to Step 81 |-- |

| |to Cool Fan 1 relay cavity 85: | | | |

| |•  | | | |

| |Blown fuse. If the fuse is blown, locate short | | | |

| |circuit. | | | |

| | | | | |

| | | | | |

| |   -  | | | |

| |CKT 342 open or shorted to ground. | | | |

| | | | | |

| | | | | |

| |   -  | | | |

| |Shorted Cool Fan 1 relay coil. | | | |

| | | | | |

| | | | | |

| |   -  | | | |

| |Shorted Fan 2 relay coil. | | | |

| | | | | |

| | | | | |

| |   -  | | | |

| |Shorted high speed engine Cool Fan 3 relay coil. | | | |

| | | | | |

| | | | | |

| |   -  | | | |

| |Circuit unrelated to cooling fans. | | | |

| | | | | |

| | | | | |

| |•  | | | |

| |Replace the fuse. | | | |

| | | | | |

| |Repair cause of no battery positive voltage to Cool| | | |

| |Fan 1 relay cavity 85 | | | |

| |Is the action complete? | | | |

|20 |Turn off the ignition switch. |-- |Go to Step 21 |Go to Step 27 |

| |Disconnect both cooling fans. | | | |

| |Connect terminals A and B together at both cooling | | | |

| |fan connectors using fused jumpers. | | | |

| |Turn off the ignition switch. | | | |

| |Connect a test light between Cool Fan 1 relay | | | |

| |cavities 87 and 30. | | | |

| |Is the test light on? | | | |

|21 |Connect a test light between Cool Fan 1 relay |-- |Go to Step 22 |Go to Step 25 |

| |cavities 85 and 86. | | | |

| |Turn on the ignition switch. | | | |

| |Command Fan 1 on using the scan tool output tests | | | |

| |function. | | | |

| |Observe the test light. | | | |

| |Is the test light on? | | | |

|22 |Turn off the ignition switch |-- |Go to Step 23 |Go to Step 24 |

| |Remove the jumpers from the engine cooling fan | | | |

| |connectors and reconnect the cooling fans. | | | |

| |Install a fused jumper between Cool Fan 1 relay | | | |

| |cavities 87 and 30. | | | |

| |Turn on the ignition switch. | | | |

| |Observe the cooling fans. | | | |

| |Are both cooling fans running? | | | |

|23 |Check for poor Cool Fan 1 relay connections at the |-- |Go to Step 81 |Go to Step 37 |

| |Underhood Electrical Center. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|24 |Check for poor connections at the coolant fan |-- |Go to Step 81 |Go to Step 63 |

| |motors. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|25 |Turn off the ignition switch. |-- |Go to Step 77 |Go to Step 26 |

| |Disconnect the PCM blue connector C1. | | | |

| |Install a fused jumper between Cool Fan 1 relay | | | |

| |cavities 86 and 85. | | | |

| |Turn on the ignition switch. | | | |

| |Probe Coolant Fan 1 relay control circuit at the | | | |

| |PCM harness connector with a test light to ground. | | | |

| |Is the test light on? | | | |

|26 |Locate and repair open in the Coolant Fan 1 relay |-- |Go to Step 81 |-- |

| |control circuit between the PCM and Cool Fan 1 | | | |

| |relay cavity 86. | | | |

| |Is the action complete? | | | |

|27 |Turn off the ignition switch. |-- |Go to Step 28 |Go to Step 31 |

| |Remove the jumpers from the cooling fan connectors.| | | |

| |Reconnect the cooling fans. | | | |

| |Install a fused jumper between Cool Fan 1 relay | | | |

| |cavities 87 and 30. | | | |

| |Remove the Fan 2 relay from the Underhood | | | |

| |Electrical Center. | | | |

| |Probe Fan 2 relay cavity 30 with a test light | | | |

| |connected to ground. | | | |

| |Is the test light on? | | | |

|28 |Connect a test light between Fan 2 relay in |-- |Go to Step 30 |Go to Step 29 |

| |Underhood Electrical Center cavities 30 and 87A. | | | |

| |Is the test light on? | | | |

|29 |Check for an open in CKT 504 between Fan 2 relay |-- |Go to Step 81 |Go to Step 57 |

| |cavity 30 and Engine Coolant Fan Motor #2 terminal | | | |

| |B. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|30 |Check for a poor connection at Fan 2 relay in |-- |Go to Step 81 |Go to Step 70 |

| |Underhood Electrical Center cavities 30 or 87A. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|31 |Check for an open in CKT 409 between Cool Fan 1 |-- |Go to Step 81 |Go to Step 56 |

| |relay cavity 30 and left engine cooling fan harness| | | |

| |connector terminal B. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|32 |Using scan tool, view A/C Request. |-- |Go to Air Conditioning (A/C) |Go to Step 33 |

| |Does the scan tool display Yes? | |Compressor Control Circuit | |

| | | |Diagnosis | |

|33 |Are both cooling fan(s) running at low speed? |-- |Go to Step 34 |Go to Step 40 |

|34 |Remove Cool Fan 1 relay from the Underhood |-- |Go to Step 35 |Go to Step 36 |

| |Electrical Center. | | | |

| |Are the cooling fans running? | | | |

|35 |Locate and repair short to voltage in CKT 409. |-- |Go to Step 81 |-- |

| |Is the action complete? | | | |

|36 |Using a test light connected to battery positive |-- |Go to Step 38 |Go to Step 37 |

| |voltage, probe Cool Fan 1 relay cavity 86. | | | |

| |Is the test light on? | | | |

|37 |Replace Cool Fan 1 relay. |-- |Go to Step 81 |-- |

| |Is the action complete? | | | |

|38 |Turn off the ignition switch. |-- |Go to Step 39 |Go to Step 77 |

| |Disconnect the blue PCM connector. | | | |

| |Probe Cool Fan relay cavity 86 with a test light | | | |

| |connected to battery positive voltage. | | | |

| |Is the test light on? | | | |

|39 |Locate and repair short to ground in the Cool Fan 1|-- |Go to Step 81 |-- |

| |relay control circuit. | | | |

| |Is action complete? | | | |

|40 |Are both cooling fans running at high speed? |-- |Go to Step 41 |Go to Step 42 |

|41 |View A/C Pressure on the scan tool. |1.2V |Go to Step 77 |Go to Step 44 |

| |Does the scan tool display voltage less than the | | | |

| |specified value? | | | |

|42 |Turn off the ignition switch. |-- |Go to Step 43 |Go to Step 77 |

| |Disconnect the PCM. | | | |

| |Turn off the ignition switch. | | | |

| |Observe the cooling fans. | | | |

| |Is the right engine cooling fan running at high | | | |

| |speed? | | | |

|43 |Check for a short to ground in the Cool Fan 2 relay|-- |Go to Step 81 |Go to Step 52 |

| |and Cool Fan 3 relay control circuit. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|44 |Turn off the ignition switch. |0.0V |Go to Step 46 |Go to Step 45 |

| |Disconnect the A/C refrigerant pressure sensor | | | |

| |electrical connector. | | | |

| |Turn on the ignition switch. | | | |

| |View A/C Pressure on the scan tool. | | | |

| |Does the scan tool display voltage near the | | | |

| |specified value? | | | |

|45 |Probe the A/C refrigerant pressure signal circuit |0.0V |Go to Step 77 |Go to Step 51 |

| |with a connected to the A/C refrigerant pressure | | | |

| |sensor ground. | | | |

| |Does the digital multimeter display voltage near | | | |

| |the specified value? | | | |

|46 |Probe the A/C refrigerant pressure sensor ground |-- |Go to Step 47 |Go to Step 49 |

| |with a test light to battery positive voltage. | | | |

| |Is the test light on? | | | |

|47 |Probe the A/C refrigerant pressure sensor 5 volt |5.0V |Go to Step 48 |Go to Step 50 |

| |reference circuit with a Digital Multimeter | | | |

| |connected to the A/C refrigerant pressure sensor | | | |

| |ground. | | | |

| |Does the digital multimeter display voltage near | | | |

| |the specified value? | | | |

|48 |Replace the A/C refrigerant pressure sensor. Refer |-- |Go to Step 81 |-- |

| |to A/C Refrigerant Pressure Sensor Replacement in | | | |

| |HVAC. | | | |

| |Is the action complete? | | | |

|49 |Locate and repair open or short to voltage in the |-- |Go to Step 81 |-- |

| |A/C refrigerant pressure sensor ground circuit. | | | |

| |Is the action complete? | | | |

|50 |Locate and repair open or short to ground in the |-- |Go to Step 81 |-- |

| |A/C refrigerant pressure sensor 5 volt reference | | | |

| |circuit. | | | |

| |Is the action complete? | | | |

|51 |Locate and repair short to voltage in the A/C |-- |Go to Step 81 |-- |

| |refrigerant pressure signal circuit. | | | |

| |Is the action complete? | | | |

|52 |Remove the Cool Fan 2 relay from the Underhood |-- |Go to Step 53 |Go to Step 70 |

| |Electrical Center. | | | |

| |Observe the cooling fans. | | | |

| |Is the right engine cooling fan running at high | | | |

| |speed? | | | |

|53 |Remove the Fan 3 relay from the Underhood |-- |Go to Step 54 |Go to Step 55 |

| |Electrical Center. | | | |

| |Is the right engine cooling fan running at high | | | |

| |speed? | | | |

|54 |Locate and repair short to battery positive voltage|-- |Go to Step 81 |-- |

| |in CKT 532 | | | |

| |Is the action complete? | | | |

|55 |Locate and repair short to battery positive voltage|-- |Go to Step 81 |Go to Step 76 |

| |in CKT 504. | | | |

| |If a problem is found repair as necessary. | | | |

| |Was a problem found? | | | |

|56 |Check for an open in CKT 532 between Fan 2 relay |-- |Go to Step 81 |Go to Step 79 |

| |cavity 30 and left engine cooling fan terminal A. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|57 |Check for an open in CKT 1050 between right engine |-- |Go to Step 81 |Go to Step 80 |

| |cooling fan terminal A and ground. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|58 |Turn the ignition on,(engine not running). |-- |Go to Step 61 |Go to Step 59 |

| |Remove the Cool Fan 2 relay from the Underhood | | | |

| |Electrical Center. | | | |

| |Install a test light between Cool Fan 2 relay | | | |

| |cavity 86 and battery positive voltage. | | | |

| |Command High speed fans on using the scan tool | | | |

| |output controls function. | | | |

| |Wait approx. 5-6 seconds. | | | |

| |Observe the test light. | | | |

| |Is the test light on? | | | |

|59 |Remove the Fan 3 relay from the Underhood |-- |Go to Step 78 |Go to Step 60 |

| |Electrical Center. | | | |

| |Install a test light between Fan 3 relay cavity 86 | | | |

| |and battery positive voltage. | | | |

| |Command high speed fans on using the scan tool | | | |

| |output controls function. | | | |

| |Wait 6 seconds. | | | |

| |Observe the test light. | | | |

| |Is the test light on? | | | |

|60 |Turn off the ignition switch. |-- |Go to Step 81 |Go to Step 77 |

| |Disconnect the PCM. | | | |

| |Turn on the ignition switch. | | | |

| |Check the Cool Fan 2 relay and Cool relay control | | | |

| |circuit for an open or a short to voltage. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|61 |Turn off the ignition switch |-- |Go to Step 62 |Go to Step 64 |

| |Reinstall the Cool Fan 2 relay. | | | |

| |Disconnect both coolant fan electrical connectors. | | | |

| |Turn on the ignition switch. | | | |

| |Command Fan 2 on using the scan tool output | | | |

| |controls function. | | | |

| |Wait approx. 5-6 seconds. | | | |

| |Probe terminal B at the right engine cooling fan | | | |

| |connector with a test light to ground. | | | |

| |Is the test light on? | | | |

|62 |Probe terminal A at the left engine cooling fan |-- |Go to Step 63 |Go to Step 71 |

| |connector with a test light to battery positive | | | |

| |voltage. | | | |

| |Is the test light on? | | | |

|63 |Identify cause of inoperative cooling fan: |-- |Go to Step 81 |-- |

| |•  | | | |

| |Open right engine cooling fan motor windings. | | | |

| | | | | |

| | | | | |

| |•  | | | |

| |Open left engine cooling fan motor windings. | | | |

| | | | | |

| | | | | |

| |•  | | | |

| |Stalled cooling fan(s). | | | |

| | | | | |

| |Replace the affected cooling fan motor. | | | |

| |Is the action complete? | | | |

|64 |Remove the high speed engine Cool Fan 2 relay from |-- |Go to Step 66 |Go to Step 65 |

| |the Underhood Electrical Center. | | | |

| |Turn on the ignition switch. | | | |

| |Probe Cool Fan 2 relay cavity 85 with a test light | | | |

| |connected to ground. | | | |

| |Is the test light on? | | | |

|65 |Locate and repair open in the ignition battery |-- |Go to Step 81 |-- |

| |positive voltage circuit to high speed engine Cool | | | |

| |Fan 2 relay. | | | |

| |Is the action complete? | | | |

|66 |Probe Cool Fan 2 relay cavity 30 with a test light |-- |Go to Step 68 |Go to Step 67 |

| |connected to ground. | | | |

| |Is the test light on? | | | |

|67 |Locate and repair open in battery positive voltage |-- |Go to Step 81 |-- |

| |circuit to Cool Fan 2 relay cavity 30. | | | |

| |Is the action complete? | | | |

|68 |Check Engine Coolant Fan Motor #1 circuit for an |-- |Go to Step 81 |Go to Step 69 |

| |open between right engine cooling fan terminal B | | | |

| |and Cool Fan 2 relay cavity 87. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|69 |Check for a poor Cool Fan 2 relay terminal |-- |Go to Step 81 |Go to Step 70 |

| |connections at the Underhood Electrical Center. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|70 |Replace Cool Fan 2 relay. |-- |Go to Step 81 |-- |

| |Is the action complete? | | | |

|71 |Remove the Fan 3 relay from the Underhood |-- |Go to Step 73 |Go to Step 72 |

| |Electrical Center. | | | |

| |Turn on the ignition switch. | | | |

| |Probe Fan 3 relay cavity 85 with a test light | | | |

| |connected to ground. | | | |

| |Is the test light on? | | | |

|72 |Locate and repair open in battery positive voltage |-- |Go to Step 81 |-- |

| |circuit to Fan 3 relay cavity 85. | | | |

| |Is action complete? | | | |

|73 |Probe Fan 3 relay cavity 87 in the Underhood |-- |Go to Step 75 |Go to Step 74 |

| |Electrical Center with a test light to battery | | | |

| |positive voltage. | | | |

| |Is the test light on? | | | |

|74 |Locate and repair open in circuit between Fan 3 |-- |Go to Step 81 |-- |

| |cavity 87and Fan 2 relay cavity 87a in the | | | |

| |Underhood Electrical Center and ground. | | | |

| |Is the action complete? | | | |

|75 |Check for poor Fan 3 relay engine terminal |-- |Go to Step 81 |Go to Step 76 |

| |connections at the Underhood Electrical Center. | | | |

| |If a problem is found, repair as necessary. | | | |

| |Was a problem found? | | | |

|76 |Replace the Fan 3 relay in the Underhood Electrical|-- |Go to Step 81 |-- |

| |Center. | | | |

| |Is the action complete? | | | |

|77 |Replace the PCM. |-- |Go to Step 81 |-- |

| |Important: :  The replacement PCM must be | | | |

| |programmed. . | | | |

| |Is the action complete? | | | |

|78 |Repair open in the Cool Fan 2 relay cavity 86 and |-- |Go to Step 81 |-- |

| |Cool relay cavity 86 control circuit to PCM. | | | |

| |Is the action complete? | | | |

|79 |Replace the left engine cooling fan motor. |-- |Go to Step 81 |-- |

| |Is action complete? | | | |

|80 |Replace the right engine cooling fan motor. |Go to Step 81 | | |

| |Is the action complete? | | | |

|81 |Engine coolant below 100°C (212°F). |-- |Go to Step 32 |Go to Step 82 |

| |A/C off. | | | |

| |Engine running. | | | |

| |Observe the cooling fans. | | | |

| |Are the cooling fans running? | | | |

|82 |Command Fan 1 on using the scan tool output tests |-- |Go to Step 83 |Go to Step 8 |

| |function. | | | |

| |Observe the cooling fans. | | | |

| |Are both cooling fans running at low speed? | | | |

|83 |Command High speed fans on using the scan tool |-- |System OK |Go to Step 58 |

| |output tests function. | | | |

| |Wait 6 seconds. | | | |

| |Observe the cooling fans. | | | |

| |Are both cooling fans running at high speed? | | | |

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