Prius L4-1.8L (2ZR-FXE) Hybrid (2010)
Required Tools & Equipment
Additional TIS Techstream or Techstream Lite units may be ordered by calling Approved Dealer Equipment (ADE).
Repair Procedure
1. Using TIS Techstream check for Diagnostic Trouble Codes (DTCs).
2. Are DTCs P261B or P261C present?
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YES - Continue to step 3.
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NO - Diagnose other DTC(s) first.
3. Disconnect the water pump assembly connector.
4. Turn the power switch ON (IG).
5. Measure the voltage at D13-1 to body ground.
6. Is there battery voltage?
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YES - Go to step 7.
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NO - This TSB does NOT apply. Refer to the Repair Manual for additional diagnostics.
Refer to the Technical Information System (TIS) 2010 model year Prius Repair Manual:
Engine/Hybrid System - Engine Control - "2ZR-FXE Engine Control: SFI System: P261B-P261D: Coolant Pump "B" Control Malfunction"
7. Replace the electric water pump.
Refer to TIS 2010 model year Prius Repair Manual:
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Engine/Hybrid System - Cooling - "2ZR-FXE Cooling: Water Pump: Removal / Installation"
8. Clear DTCs and confirm repair.