Toyota Tundra (2015 year). Manual — part 2058
INSPECTION PROCEDURE
PROCEDURE
1.
CHECK CRANKING
TEST RESULT
PROCEED TO
Cranking possible and holding control operates
A
Does not crank
B
Cranking possible but holding control does not operate
C
B
GO TO STEP 2
C
GO TO STEP 11
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Cranking Hold...
OK
A
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN
IN PROBLEM SYMPTOMS TABLE
2.
READ VALUE USING TECHSTREAM (STARTER SIGNAL)
(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 / Starter Signal.
(e) Read values.
(f) Check the result when the ignition switch is turned to ON and when the engine is started.
Standard:
IGNITION SWITCH POSITION
DISPLAY (STARTER SIGNAL)
ON
OFF
START
ON
NG
GO TO STEP 7
3.
INSPECT STARTER RELAY (ST)
(a) Remove the starter relay (ST) from the engine room
relay block
.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
3 - 5
When no battery voltage applied to terminals 1 and 2
10 kΩ or higher
3 - 5
When battery voltage applied to terminals 1 and 2
Below 1 Ω
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Cranking Hold...
OK
OK
NG
REPLACE STARTER RELAY (ST)
4.
CHECK HARNESS AND CONNECTOR (ST RELAY - PNP SWITCH)
(a) Remove the ST relay from the engine room relay block
.
(b) Disconnect the D35 PNP switch.
(c) Measure the resistance according to the value(s) in the
table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
ST relay (1) - D35-5 (L)
Always
Below 1 Ω
ST relay (1) or D35-5 (L) -
Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
5.
CHECK STARTER RELAY (POWER SOURCE)
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Cranking Hold...
OK
(a) Remove the ST relay from the engine room relay block
.
(b) Measure the voltage according to the value(s) in the
table below.
Standard voltage:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
ST relay (2) - ST relay (5)
Always
11 to 14 V
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
(STARTER RELAY (ST) - BATTERY, BODY
GROUND)
6.
INSPECT STARTER
(a) Inspect the starter
.
NG
REPAIR OR REPLACE STARTER
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR
(STARTER - STARTER RELAY (ST), BATTERY)
7.
CHECK IGNITION SWITCH (POWER SOURCE)
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: Cranking Hold...
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