Description

Honda Cr V Repair Manual – Engine Cooling Section (2007-2009)

You’ve got a Honda CR-V in the bay with an overheating complaint. The radiator fans aren’t kicking on, and that aftermarket wiring diagram you pulled off the internet is a guess at best. I’ve been in this trade long enough to know that guessing on a cooling system gets you a blown head gasket and a pissed-off customer. That’s why OEM documentation matters. This Honda Cr V Repair Manual – specifically the Engine Cooling section – gives you the exact pressure test specs, fan motor test procedure, and thermostat lift height that Honda designed into the 2007-2009 CR-V. 30 pages of what you actually need, nothing more.

Cooling System Component Location Index – Know Where Everything Lives

The manual opens with a component location index on page 10-2 that maps every part: coolant separator, water pump, EGR passage, condenser fan assembly, radiator fan assembly, and the ECT sensor 2. If you’re chasing a leak or a no-coolant condition, this index saves you from hunting through vague parts diagrams. Factory layout, not some generic sketch that shows the wrong routing for the water passage.

Radiator Cap Test at 14-18 psi: Factory Specs You Need

Page 10-3 walks you through the radiator cap pressure test and the full radiator pressure test. Apply 93-123 kPa (0.95-1.25 kgf/cm², 14-18 psi). Check for a drop in pressure. Then it tells you to inspect for engine oil in the coolant and coolant in the engine oil. That’s a head gasket diagnostic check that most aftermarket guides skip entirely. If you’re working on a CR-V that’s been overheating, that step alone can save you from replacing a perfectly good radiator.

Fan Motor Test and Thermostat Test – Two Quick Checks

The fan motor test on page 10-4 is dead simple: disconnect the 2P connector, apply battery power to terminal No.2 and ground to No.1. If it doesn’t run smooth, replace it. The thermostat test gives you the standard lift height—above 8.0 mm (0.31 in.)—with opening temps of 169-176 °F and fully open at 194 °F. No guessing if your thermostat is weak; you have the factory number.

Water Pump Inspection and Replacement: Don’t Skip the Drive Belt Step

Before you can inspect the water pump, you need to remove the drive belt (the manual references page 4-29 for that). Then turn the water pump pulley counterclockwise—page 10-5 shows the procedure. Replacement instructions follow. If you’ve ever had a water pump fail because someone reused a contaminated belt or didn’t check the pulley play, you know why these steps matter.

Does This Manual Cover the Fan Controls Circuit?

Yes. The Fan Controls section starts at page 10-26 with a component location index, then a symptom troubleshooting index (page 10-27), a circuit diagram on page 10-28, and finally the radiator fan high speed circuit troubleshooting on page 10-29. If your CR-V’s fan only runs on low speed or not at all, this section gives you the OEM wiring diagram and a step-by-step diagnostic path. Aftermarket manuals often combine multiple models into one diagram; this one is model-specific.

Coolant Replacement: Follow the Sequence, Not Shortcuts

Coolant check and replacement procedures are on pages 10-6 and 10-8, respectively. The thermostat replacement is on page 10-8, water passage replacement on 10-9, and EGR passage removal on 10-12. Each step includes the correct orientation, gasket surfaces, and torque values (though torque values for specific fasteners are listed in their respective chapters; the Engine Cooling section focuses on removal/installation steps).

If you’re a home garage mechanic tackling the cooling system on your 2007-2009 Honda CR-V, this manual is the difference between a fix that lasts 50,000 miles and one that leaks in a week. The OEM factory documentation doesn’t assume you know which bolt goes where – it shows you exactly which component goes where and with what clearance.

For reference, the radiator cap pressure spec alone (14-18 psi) is something I’ve seen misprinted in three different aftermarket guides. Honda’s own manual, on page 10-3, gives you the exact range. That’s why I keep a copy of the factory manual in my box. Related manuals worth looking at: Honda Cr V Fuel and Emissions Repair Manual 2007-2009 covers the fuel system side; Honda 450, 500 1978 Repair Manual – Clymer Factory Specs is a different beast but shares the same attention to factory tolerances; Honda CR-V, Odyssey 2002 Repair Manual – Factory Shop Specs gives you earlier model coverage if you work on older Gen 2 CR-Vs. For broader automotive documentation practices, see Automotive Industry Overview and Automotive Industry Overview.

Frequently Asked Questions

Does this manual include torque specs for the water pump bolts?

No. The Engine Cooling section focuses on removal and installation procedures, not fastener torque values. You’ll need the main body of the 2007-2009 CR-V repair manual for those specs.

What’s the thermostat lift height specification?

Standard lift height is above 8.0 mm (0.31 in.) when fully open. Starts opening at 169-176°F, fully open at 194°F. The test procedure on page 10-4 tells you how to measure it correctly.

Access the Factory Manual now and get the same documentation that Honda technicians use. No guesswork, no aftermarket approximations – just the OEM specs that keep your CR-V’s cooling system in factory condition.