Toyota Tundra (2015 year). Manual — part 1284
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 forced operation while the engine is idling.
(i) Turn the ignition switch off.
NOTICE:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D50-3 (SIV) - D50-1 (E)
AIR PUMP: ON, ASV: OPEN
0.5 to 2 V
D54-3 (SIV2) - D54-1 (E2)
AIR PUMP: ON, ASV: OPEN
0.5 to 2 V
D50-3 (SIV) - D50-1 (E)
AIR PUMP: OFF, ASV: CLOSE
11 to 14 V
D54-3 (SIV2) - D54-1 (E2)
AIR PUMP: OFF, ASV: CLOSE
11 to 14 V
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
(k) Connect the Techstream to the DLC3.
(l) Turn the ignition switch to ON and turn the Techstream on.
(m) Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check /
Manual Mode / AIR PUMP 1: ON, ASV 1: OPEN, AIR PUMP 2: ON, ASV 2: OPEN.
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.
(n) Start the engine.
(o) Perform the AIR system forced operation while the engine is idling.
(q) Turn the ignition switch off.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
OK
NEXT
NOTICE:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D50-4 (SIP) - D50-1 (E)
AIR PUMP: ON, ASV: OPEN
0.5 to 2 V
D54-4 (SIP2) - D54-1 (E2)
AIR PUMP: ON, ASV: OPEN
0.5 to 2 V
D50-4 (SIP) - D50-1 (E)
AIR PUMP: OFF, ASV: CLOSE
11 to 14 V
D54-4 (SIP2) - D54-1 (E2)
AIR PUMP: OFF, ASV: CLOSE
11 to 14 V
NG
REPLACE ECM
14.
REPLACE AIR INJECTION CONTROL DRIVER (FOR BANK 1 OR BANK 2)
(a) Replace the air injection control driver (for bank 1 or bank 2)
.
15.
CHECK WHETHER DTC OUTPUT RECURS (DTC P2440, P2441, P2442 AND/OR P2443)
(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.
(e) Turn the Techstream on.
(f) Clear DTCs (if set)
.
(g) Enter the following menus: Powertrain / Engine and ECT / Utility / Secondary Air Injection Check /
Automatic Mode.
(h) Start the engine after the Techstream initialization is finished.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
OK
(i) Perform the System Check operation by pressing ENTER (Next).
(j) After operating the AIR system, perform the following to confirm the AIR system pending codes:
Press the Exit button.
(k) Check pending DTCs.
(l) Turn the ignition switch off.
OK:
No pending DTC output.
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.
NG
REPLACE ECM
OK
END
16.
INSPECT VACUUM HOSES (AIR SWITCHING VALVE - PRESSURE SENSOR)
OK:
No blockage and no deformation in vacuum hose.
NG
REPAIR OR REPLACE VACUUM HOSE
17.
INSPECT AIR SWITCHING VALVE ASSEMBLY (PRESSURE SENSOR)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine and ECT / Data List / Air pump pressure (Absolute)
and Air Pump2 Pressure (Absolute).
(e) Check the pressure displayed on the Techstream.
Standard pressure:
45 to 135 kPa
HINT:
The Techstream displays the air pump pressure as absolute pressure.
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
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