DESCRIPTION Refer to DTC P008A00. Click here
MONITOR DESCRIPTION If the fuel pressure (for low pressure side) increases despite a decrease request signal being sent to the fuel pump control ECU by the ECM, the ECM will store this DTC. MONITOR STRATEGY
CONFIRMATION DRIVING PATTERN
CAUTION / NOTICE / HINT NOTICE:
HINT: Read Freeze Frame Data using the Techstream. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred. PROCEDURE
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Engine / Trouble Codes. (e) Read the DTCs. Powertrain > Engine > Trouble Codes
HINT: If any DTCs other than P008B00 are output, troubleshoot those DTCs first.
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
(e) Start the engine. (f) Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (Low). Powertrain > Engine > Data List
(g) Record the Fuel Pressure (Low) value. (h) Turn the power switch off. (i) Discharge the fuel pressure. HINT: DTCs may be stored during this inspection. Check for DTCs and clear them using the Techstream. (1) Remove the EFI-MAIN NO. 2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly. (2) Turn the power switch on (IG). (3) Turn the Techstream on. (4) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
(5) Start the engine. (6) After the engine has stopped on its own, turn the power switch off. HINT: If the engine does not stop naturally, perform direct injection by racing the engine to reduce the fuel pressure [Fuel Pressure (High)] and stop the engine. (7) Turn the power switch on (IG). (8) Turn the Techstream on. (9) Put the engine in Inspection Mode (Maintenance Mode). Powertrain > Hybrid Control > Utility
(10) Crank the engine again and make sure that the engine does not start. (11) Install the EFI-MAIN NO. 2 fuse. (j) Enter the following menus: Powertrain / Engine / Data List / Fuel Pressure (Low). Powertrain > Engine > Data List
(k) Compare the Fuel Pressure (Low) value recorded with the engine running to the Fuel Pressure (Low) value currently shown on the Techstream.
HINT: Perform "Inspection After Repair" after replacing the fuel pressure sensor (for low pressure side). Click here
(a) Install the fuel pressure gauge (for low pressure side). Click here (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio / Data List / Fuel Pressure (Low). Powertrain > Engine > Active Test
(f) Compare the values in the Data List using the Techstream and the fuel pressure gauge when the Active Test was performed. Standard:
HINT: Perform "Inspection After Repair" after replacing the fuel pressure sensor (for low pressure side). Click here
(a) Install the fuel pressure gauge (for low pressure side). Click here (b) Connect the Techstream to the DLC3. (c) Turn the power switch on (IG). (d) Turn the Techstream on. (e) Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump Duty Ratio / Data List / Fuel Pressure (Low). Powertrain > Engine > Active Test
(f) Read the values on the Data List and the fuel pressure gauge when the Active Test was performed.
(a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Clear the DTCs. Powertrain > Engine > Clear DTCs(e) Turn the power switch off and wait for at least 30 seconds.
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern. (b) Enter the following menus: Powertrain / Engine / Utility / All Readiness. Powertrain > Engine > Utility
(c) Input the DTC: P008B00. (d) Check the DTC judgment result.
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Adaptive Variable Suspension System: Vehicle Identification Malfunction (C1789)
DESCRIPTION When the absorber control ECU has not acquired the vehicle identification information, DTC C1789 is stored. When the vehicle identification information is correctly acquired, this DTC is cleared. Vehicle identification information is automatically acquired when the system enters test mod ...