Toyota Tundra (2015 year). Manual — part 1665
OK
OK
NG
REPLACE AIR PUMP HEATER RELAY (AI HTR)
6.
CHECK AIR PUMP HEATER RELAY (AI HTR) (POWER SOURCE)
(a) Remove the air pump heater relay (AI HTR).
(b) Measure the voltage according to the value(s) in the
table below.
Standard Voltage:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
AI HTR relay terminal 5 - Body
ground
Always
11 to 14 V
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
7.
CHECK HARNESS AND CONNECTOR (AIR PUMP - AI HTR RELAY, BODY GROUND)
(a) Remove the air pump heater relay (AI HTR).
(b) Disconnect the air pump connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
AI HTR relay terminal 3 - D89-1 (APH+)
Always
Below 1 Ω
AI HTR relay terminal 3 - D90-1 (APH+)
Always
Below 1 Ω
D89-3 (APHG) - Body ground
Always
Below 1 Ω
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P244...
OK
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D90-3 (APHG) - Body ground
Always
Below 1 Ω
AI HTR relay terminal 3 or D89-1 (APH+) - Body ground
Always
10 kΩ or higher
AI HTR relay terminal 3 or D90-1 (APH+) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
8.
PERFORM ACTIVE TEST USING TECHSTREAM (SECONDARY AIR INJECTION
SYSTEM OPERATION)
(a) Start the engine and warm it up.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON and turn the Techstream on.
(e) Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection
Check / Manual Mode / AIR PUMP 1: ON, ASV1: OPEN, AIR PUMP 2: ON, ASV2: OPEN and AIR
PUMP 1: OFF, ASV1: CLOSE, AIR PUMP 2: OFF, ASV2: CLOSE.
HINT:
When Manual Mode is selected, the Techstream initialization (atmospheric pressure measurement) is
performed automatically. The initialization takes 10 seconds. After the initialization, AIR PUMP and ASV
operation can be selected.
(f) Start the engine.
(g) Perform the AIR system intrusive operation while the engine is idling.
(h) Check that the air pump (AIR PUMP), ASV and pressure in the AIR system passage
(PRESSURE) status displayed on the Techstream indicate the conditions shown in the table
below.
Standard:
OPERATION
AIR PUMP
ASV
PRESSURE*
AIR PUMP: ON, ASV: OPEN
ON
OPEN
2.4 kPa or more
AIR PUMP: OFF, ASV: CLOSE
OFF
CLOSE
Less than 2.4 kPa
*: Average pumping pressure. The pressure should be 2.4 kPa or more when the AIR system operates.
(i) Turn the ignition switch off.
NOTICE:
This Secondary Air Injection Check only allows technicians to operate the AIR system for a maximum of
5 seconds.
Furthermore, the check can only be performed up to 4 times per trip. If the test is repeated,
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P244...
OK
the prohibition (WAIT or ERROR).
If an ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and
then try again.
GO TO STEP 10
9.
CHECK WHETHER DTC OUTPUT RECURS (DTC P2444, P2445, P2446 AND/OR
P2247)
(a) Start the engine and warm it up.
(b) Turn the ignition switch off.
(c) Connect the Techstream to the DLC3.
(d) Turn the ignition switch to ON and turn the Techstream on.
(e) Clear DTCs (if output)
.
(f) Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection
Check / Automatic Mode.
(g) Start the engine after the Techstream initialization is finished.
(h) Perform the System Check operation by pressing Next.
(i) After operating the AIR system, perform the following to confirm the AIR system pending
codes: Press the Exit button.
(j) Check pending DTCs.
(k) Turn the ignition switch off.
NOTICE:
When performing the Secondary Air Injection Check operation after the battery cable has been
reconnected, wait for 7 minutes with the ignition switch turned to ON or the engine running.
Turn the ignition switch off when the Secondary Air Injection Check operation finishes.
Result
RESULT
PROCEED TO
P2444, P2445, P2446 and/or P2447 are output
A
No pending DTC is output
B
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P244...
A
OK
OK
B
CHECK FOR INTERMITTENT PROBLEMS
10.
CHECK VACUUM HOSES (PRESSURE SENSOR - AIR SWITCHING VALVE)
(a) Check the vacuum hose connections with the pressure sensor and ASV.
(b) Inspect the vacuum hose for blockages and damage.
OK:
Vacuum hose has no blockages or damage.
NG
REPAIR OR REPLACE VACUUM HOSE
11.
INSPECT AIR SWITCHING VALVE ASSEMBLY (PRESSURE SENSOR)
NG
REPLACE AIR SWITCHING VALVE ASSEMBLY
12.
CHECK AIR INJECTION SYSTEM PIPE CONNECTIONS
3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P244...
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст