Toyota Tundra (2015 year). Manual — part 1001
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000005KPY001X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: WF1AM TRANSFER: TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM: P17A4; Automatic Disconnecting
Differential Motor Limit Switch Circuit; 2015 MY Tundra [08/2014 - ]
DTC
P17A4
Automatic Disconnecting Differential Motor Limit Switch Circuit
DESCRIPTION
TERMINAL
IN 2WD
SWITCHING BETWEEN 2WD AND 4WD
IN 4WD
DL1
OFF (OPEN)
ON (GND)
ON (GND)
DL2
ON (GND)
ON (GND)
OFF (OPEN)
This DTC is detected when the limit switch ON/OFF combination (2 lines) is abnormal.
DTC
CODE
DTC DETECTION CONDITION
DIAGNOSIS CONDITION
1.
MALFUNCTION STATUS
2.
MALFUNCTION TIME
3.
OTHER
4.
TROUBLE AREA
P17A4
Ignition switch is ON and engine is running
1.
Limit switch DL1 terminal is OFF (OPEN) and
the DL2 terminal is OFF (OPEN)
2.
1 second or more
3.
1 trip detection logic
4.
Wire harness and connector
4 wheel drive control ECU
A.D.D. actuator (differential
vacuum actuator assembly)
WIRING DIAGRAM
WF1AM TRANSFER: TOUCH SELECT 2-4 AND HIGH-LOW SYS...
OK
INSPECTION PROCEDURE
PROCEDURE
1.
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - DIFFERENTIAL
VACUUM ACTUATOR ASSEMBLY)
(a) Disconnect the A25 4 wheel drive control ECU connector.
(b) Disconnect the G1 A.D.D. actuator (differential vacuum actuator assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A25-7 (DL1) - G1-6 (DL1)
Always
Below 1 Ω
A25-20 (DL2) - G1-5 (DL2)
Always
Below 1 Ω
G1-4 (GND) - Body ground
Always
Below 1 Ω
A25-7 (DL1) or G1-6 (DL1) - Body ground
Always
10 kΩ or higher
A25-20 (DL2) or G1-5 (DL2) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
WF1AM TRANSFER: TOUCH SELECT 2-4 AND HIGH-LOW SYS...
2.
INSPECT DIFFERENTIAL VACUUM ACTUATOR ASSEMBLY (LIMIT SWITCH)
(a) Disconnect the G1 A.D.D. actuator (differential vacuum
actuator assembly) connector.
(b) Measure the resistance according to the value(s) in the table
below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
6 (DL1) - Body ground
Always
10 kΩ or higher
5 (DL2) - Body ground
Always
10 kΩ or higher
Text in Illustration
*a
Component without harness connected
(A.D.D. Actuator [Differential Vacuum Actuator Assembly])
NG
REPLACE 4 WHEEL DRIVE CONTROL ECU
OK
REPLACE DIFFERENTIAL VACUUM ACTUATOR
ASSEMBLY
WF1AM TRANSFER: TOUCH SELECT 2-4 AND HIGH-LOW SYS...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000005KPR001X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: WF1AM TRANSFER: TOUCH SELECT 2-4 AND HIGH-LOW SYSTEM: P17A5,P17A6; Transfer
Synchronization Actuator Circuit Open; 2015 MY Tundra [08/2014 - ]
DTC
P17A5
Transfer Synchronization Actuator Circuit Open
DTC
P17A6
Transfer Synchronization Actuator Circuit Low
DESCRIPTION
This DTC is detected when an open circuit or short to ground is detected in the solenoid coil drive circuit.
DTC
CODE
DTC DETECTION CONDITION
DIAGNOSIS CONDITION
1.
MALFUNCTION STATUS
2.
MALFUNCTION TIME
3.
OTHER
4.
TROUBLE AREA
P17A5
Ignition switch ON (when not switching between
2WD and 4H)
1.
Open circuit in the solenoid coil drive circuit
2.
1 second or more
3.
1 trip detection logic
4.
Wire harness and
connector
4 wheel drive control ECU
Solenoid coil sub-assembly
Transfer shift actuator
assembly
P17A6
Ignition switch ON (when switching between 2WD
and 4H)
1.
Short to ground in the solenoid coil drive circuit
2.
0.1 seconds or more
3.
1 trip detection logic
4.
Wire harness and
connector
4 wheel drive control ECU
Solenoid coil sub-assembly
Transfer shift actuator
assembly
WIRING DIAGRAM
WF1AM TRANSFER: TOUCH SELECT 2-4 AND HIGH-LOW SYS...
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