A/C - Poor Performance
09-038June 19, 2009
Applies To:
2008 Pilot - ALL
A/C Leak From the Rear Evaporator Pipe
SYMPTOM
The A/C performance is poor.
PROBABLE CAUSE
Rear A/C pipe assembly A (the pipe assembly directly connected to the rear evaporator) is leaking.
CORRECTIVE ACTION
Replace rear evaporator pipe assembly A.
NOTE:
The diagnosis and repair information in this service bulletin is intended for Honda technicians who, at a minimum, have completed the first 10 Honda A/C technical training courses, including NC Pressure/Temperature Diagnosis.
PARTS INFORMATION
Pipe Assembly A Kit:
P/N 80222-53V-A51, H/C 6414288
(Contains pipe assembly A, 0-rings, and insulation
material)
WARRANTY CLAIM INFORMATION
In warranty:
The normal warranty applies.
Failed Part: P/N 80222-S3V-A51
H/C 6414288
Defect Code: 00701
Symptom Code: 05201
Skill Level: Repair Technician
Out of warranty:
Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work.
DIAGNOSIS
1. Do a visual inspection of the A/C system. Did you find any obvious problems?
Yes - Repair the A/C system as needed, then go to step 2.
No - Go to step 2.
2. Using a leak detector (TIFZX-1 or equivalent), probe the driver's side center console rear vent. If needed, turn on the rear blower to its low setting.
Did you find a leak?
Yes - Go to REPAIR PROCEDURE.
No - This service bulletin does not apply. Continue with normal troubleshooting.
REPAIR PROCEDURE
NOTE:
This procedure is in an outline form that you can also use as a checklist for the repair. If you need more details, bookmark the following procedures in the 2006-2008 Pilot Service Manual, or view them online:
^ Refrigerant Recovery
^ Front Seat Removal/Installation
^ Center Console Removal/Installation
^ Rear Heater-A/C Unit Component Replacement
^ System Evacuation
^ A/C Refrigerant Oil Replacement
^ System Charging
^ A/C System Test
1. Start the engine, and let it idle for 5 minutes with the A/C on.
2. Turn the ignition switch to LOCK (0), then use a recovery/recycling/recharging station (Robinair R0B34788 or equivalent) to recover the refrigerant from the A/C system.
3. Remove the driver's seat.
4. Remove the center console.
5. Remove pipe assembly A from the evaporator:
^ Remove the pipe clamp (one screw).
^ Remove the two bolts attaching the pipe assembly to the evaporator.
^ Remove the nut from the suction line side of the pipe assembly.
^ Remove the insulation material from the expansion valve.
^ Remove the expansion valve from the suction line using two wrenches-one to hold the valve nut, and one to turn the line nut.
^ Remove pipe assembly A along with its insulation material.
6. Remove the expansion valve from pipe assembly A using two wrenches-one to hold the valve nut, and one to turn the pipe nut. The expansion valve will be reused.
7. Install new pipe assembly A:
NOTE:
Lubricate the new 0-rings with refrigerant oil before you install them.
^ Connect the pipe assembly to the expansion valve using a new 1/2-inch 0-ring. Torque the pipe nut to 31 N.m (28 lb-ft).
^ Wrap the pipe assembly and the expansion valve with new insulation material.
^ Connect the expansion valve to the suction line using a new 1/2-inch 0-ring. Torque the suction line nut to 31 N~m (28 lb-ft).
Connect the pipe assembly to the suction line using a new 5/8-inch 0-ring. Torque the nut to 9.8 N.m (7.2 lb-ft).
^ Connect the pipe assembly to the evaporator using a new 1/2-inch 0-ring and a new 5/8-inch 0-ring. Torque the pipe assembly bolts to 9.8 N.m (7.2 lb-ft).
^ Reattach the pipe clamp (one screw).
8. Recharge the A/C system with the recovery/ recycling/recharging station. Recharging includes these substeps:
^ Evacuate the system.
^ Add 10 mL (1/3 oz) of DENSO ND-OIL 8 for the new pipe assembly.
^ Add 700 to 750 g of refrigerant.
^ Check for refrigerant leaks.
^ Check the A/C performance.
9. Reinstall the center console, and replace any damaged trim clips.
10. Reinstall the driver's seat, and torque the four seat bolts to 47 N.m (35 lb-ft). Replace any damaged trim clips.
Disclaimer