On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK COOLING FAN SYSTEM
CAUTION:
To prevent injury due to contact with an operating cooling fan, keep your hands and clothing away from the cooling fans when inspecting the cooling fan system.
(a) Check and ensure the following conditions:
(1) The engine switch is off.
(2) The engine coolant temperature is less than 95 °C (203 °F).
(3) The battery voltage is between 11 to 14 V.
(4) The A/C switch is off.
(b) Connect the pickup of a clamp-on ammeter around either of the 2 wires for the cooling fan motor.
(c) Turn the engine switch on (IG) and wait for approximately 10 seconds. Check that the cooling fans are not operating.
(d) Start the engine. Check that the cooling fans are not operating with the engine idling.
HINT:
(e) Confirm the code mark on the cooling fan motor LH. |
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(f) Check that the cooling fans operate when the A/C switch is turned on.
(g) Measure the current while the cooling fan motors are operating.
Standard Current:
Item | Code Mark / Motor Type | Condition | Specified Condition |
---|---|---|---|
Cooling fan motor RH | Cooling Fan Motor 100 W Type | Battery voltage applied at 20°C (68°F) | 18.0 to 24.0 A |
Cooling Fan Motor 200 W Type | 26.0 to 32.0 A | ||
Cooling fan motor LH | S | 18.0 to 24.0 A | |
M | 26.0 to 32.0 A |
HINT:
Make sure that the engine coolant temperature is less than 95°C (203°F).
(h) Check that the cooling fans operate when the engine coolant temperature sensor connector is disconnected.
(i) Measure the current while the cooling fan motors are operating.
Standard Current:
Item | Code Mark / Motor Type | Condition | Specified Condition |
---|---|---|---|
Cooling fan motor RH | Cooling Fan Motor 100 W Type | Battery voltage applied at 20°C (68°F) | 18.0 to 24.0 A |
Cooling Fan Motor 200 W Type | 26.0 to 32.0 A | ||
Cooling fan motor LH | S | 18.0 to 24.0 A | |
M | 26.0 to 32.0 A |
(j) After the engine is warmed up, check that the cooling fans operate as shown in the illustration. HINT:
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Voice Command Button
Blue OnStar Button
Emergency Button
This vehicle may be equipped with a
comprehensive, in-vehicle system
that can connect to a live OnStar
Advisor for Emergency, Security,
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