Toyota Tundra (2015 year). Manual — part 1290
OK
13.
CHECK HARNESS AND CONNECTOR (ECM - AIR INJECTION CONTROL DRIVER)
(a) Disconnect the ECM connector.
(b) Disconnect the air injection control driver (for bank 1 or bank
2) connectors.
(c) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
D74-54 (AIRP) - D50-4 (SIP)
Always
Below 1 Ω
D74-53 (ARP2) - D54-4 (SIP2)
Always
Below 1 Ω
D74-54 (AIRP) or D50-4 (SIP) -
Body ground
Always
10 kΩ or higher
D74-53 (ARP2) or D54-4 (SIP2) -
Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
14.
INSPECT AIR PUMP ASSEMBLY (FOR BANK 1 OR BANK 2)
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...
(a) Start the engine and warm it up.
(b) Turn the ignition switch off.
(e) Turn the ignition switch to ON and turn the Techstream ON.
(f) Start the engine.
(g) 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.
(h) Measure the current while the air pump is on and off.
Standard Current:
TESTER OPERATION
AIR PUMP
ASV
SPECIFIED CONDITION
AIR PUMP: ON, ASV: OPEN
ON
OPEN
10 to 40 A
AIR PUMP: OFF, ASV: CLOSE
OFF
CLOSE
Below 1 A
NOTICE:
prohibition (WAIT or ERROR).
If ERROR is displayed on the Techstream during the test, stop the engine for 10 minutes, and then
try again.
NG
NEXT
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.
OK
GO TO STEP 17
15.
REPLACE AIR PUMP ASSEMBLY (FOR BANK 1 OR BANK 2)
(a) Replace the air pump assembly (for bank 1 or bank 2)
.
16.
CHECK WHETHER DTC OUTPUT RECURS (DTC P2444, P2445, P2446 AND/OR P2447)
(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.
(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.
OK:
No pending DTC is output.
(l) Turn the ignition switch off.
NOTICE:
When performing the Secondary Air Injection Check operation after the battery cable has been
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...
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
GO TO STEP 17
OK
END
17.
PERFORM ACTIVE TEST USING TECHSTREAM
(a) Disconnect the air injection control driver (for bank 1 or bank
2) connector.
(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 /
1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2444-P2447;...
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