Toyota Tundra (2015 year). Manual — part 2032
OK
(a) Disconnect the A24 or D74 ECM connector.
(b) Disconnect the D50 or D54 AID connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D74-28 (AIRV) - D50-3 (SIV)
Always
Below 1 Ω
A24-43 (ARV2) - D54-3 (SIV2)
Always
Below 1 Ω
D74-28 (AIRV) or D50-3 (SIV) - body ground
Always
10 kΩ or higher
A24-43 (ARV2) or D54-3 (SIV2) - body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
13.
PERFORM ACTIVE TEST USING TECHSTREAM
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
(a) Disconnect the D50 or D54 AID connector.
(d) Turn the ignition switch to ON.
(e) Turn the Techstream on.
(f) Enter the following menus: Powertrain / Engine and ECT / Utility / Air Injection Check / Manual
Mode / AIR PUMP 1: ON, ASV 1: OPEN or 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.
(g) Start the engine.
(h) Perform the AIR system forced operation while the engine is idling.
(j) Turn the ignition switch off.
NOTICE:
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
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
(l) Connect the Techstream to the DLC3.
(m) Turn the ignition switch to ON.
(n) Turn the Techstream on.
(o) Enter the following menus: Powertrain / Engine and ECT / Utility / Air Injection Check /
Manual Mode / AIR PUMP 1: ON, ASV 1: OPEN or AIR PUMP 2: ON, ASV 2: OPEN.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
OK
NEXT
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.
(p) Start the engine.
(q) Perform the AIR system forced operation while the engine is idling.
(s) Turn the ignition switch off.
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 (BANK 1 OR BANK 2)
(a) Replace the air injection control driver (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.
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P2440-P2443;...
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