Toyota Tundra (2015 year). Manual — part 789
DIFFERENTIAL: AUTOMATIC DISCONNECTING DIFFERENTIA...
Last Modified: 9-16-2014
6.6 A
Doc ID: RM00000306Z00JX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: DIFFERENTIAL: AUTOMATIC DISCONNECTING DIFFERENTIAL ACTUATOR (for 4WD): REMOVAL; 2015 MY
Tundra [08/2014 - ]
REMOVAL
1. REMOVE NO. 1 ENGINE UNDER COVER
2. REMOVE DIFFERENTIAL VACUUM ACTUATOR ASSEMBLY
(a) Disconnect the differential actuator hose.
(b) Disconnect the differential actuator connector.
(c) Remove the 4 bolts and differential vacuum actuator assembly.
DIFFERENTIAL: AUTOMATIC DISCONNECTING DIFFERENTIA...
Last Modified: 9-16-2014
6.6 G
Doc ID: RM000005L1Z001X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: DIFFERENTIAL: AUTOMATIC DISCONNECTING DIFFERENTIAL ACTUATOR (for 4WD): INSPECTION; 2015
MY Tundra [08/2014 - ]
INSPECTION
1. INSPECT DIFFERENTIAL VACUUM ACTUATOR ASSEMBLY
(a) Inspect the A.D.D. actuator (differential vacuum actuator assembly).
(1) Remove the A.D.D. actuator (differential vacuum actuator assembly)
.
(2) Check the Free to Lock switch. Connect lines via a relay as shown in the illustration, then check that
the differential vacuum actuator assembly fork moves from the Free to Lock position.
NOTICE:
Make sure to perform this inspection with the differential vacuum actuator assembly removed from the
vehicle. If this inspection is performed with the differential vacuum actuator assembly installed to the
vehicle, the differential vacuum actuator assembly will be damaged.
When inspecting the differential vacuum actuator assembly, make sure to operate it with the lines
connected via a relay. If the lines are not connected via a relay and battery voltage is directly applied to
the differential vacuum actuator assembly, the differential vacuum actuator assembly will be damaged.
HINT:
When inspecting the operation described above, use the BACK P/W NO. 2 relay.
Text in Illustration
*a
Component without harness connector
(A.D.D. Actuator (Differential Vacuum Actuator Assembly))
*b
Free to Lock
*c
BACK P/W NO. 2 Relay
-
-
After the Free to Lock switch is complete, inspect the A.D.D. (differential vacuum actuator
assembly) detection switch and limit switch.
Standard resistance:
TESTER CONNECTION
CONDITION
CONDITION
3 (ADD) - 4 (GND)
After Free to Lock switch is complete
Below 1 Ω
1.
DIFFERENTIAL: AUTOMATIC DISCONNECTING DIFFERENTIA...
TESTER CONNECTION
CONDITION
CONDITION
5 (DL2) - 4 (GND)
After Free to Lock switch is complete
100 kΩ or higher
6 (DL1) - 4 (GND)
After Free to Lock switch is complete
Below 1 Ω
(3) Check the Lock to Free switch. Connect lines via a relay as shown in the illustration, then check that
the differential vacuum actuator assembly fork moves from the Lock to Free position.
Text in Illustration
*a
Component without harness connector
(A.D.D. Actuator (Differential Vacuum Actuator Assembly))
*b
Free to Lock
*c
BACK P/W NO. 2 Relay
-
-
After the Lock to Free switch is complete, inspect the A.D.D. (differential vacuum actuator
assembly) detection switch and limit switch.
Standard resistance:
TESTER CONNECTION
CONDITION
CONDITION
3 (ADD) - 4 (GND)
After Lock to Free switch is complete
100 kΩ or higher
5 (DL2) - 4 (GND)
After Lock to Free switch is complete
Below 1 Ω
6 (DL1) - 4 (GND)
After Lock to Free switch is complete
100 kΩ or higher
If there is a malfunction, replace the A.D.D. actuator (differential vacuum actuator
assembly)
. If the A.D.D. actuator (differential vacuum actuator assembly) is
normal, replace the 4WD control ECU
.
1.
DIFFERENTIAL: AUTOMATIC DISCONNECTING DIFFERENTIA...
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