Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 40
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–115
ES
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
P0115:
P0117:
P0118:
COMPONENT OPERATING RANGE
WIRING DIAGRAM
Required Sensors/Components (Main)
Engine coolant temperature sensor
Required Sensors/Components (Related)
-
Frequency of Operation
Continuous
Duration
0.5 seconds
MIL Operation
Immediate
Sequence of Operation
None
Monitor runs whenever following DTCs not present
None
Engine coolant temperature sensor voltage
Less than 0.14 V, or more than 4.91 V
Engine coolant temperature sensor voltage
Less than 0.14 V
Engine coolant temperature sensor voltage
More than 4.91 V
Engine coolant temperature sensor voltage
0.14 V to 4.91 V
B19
Engine Coolant Temperature Sensor
2
1
5V
R
THW
E2
ECM
B1
B1
28
21
A133459E01
ES–116
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
INSPECTION PROCEDURE
HINT:
•
If other DTCs relating to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may have an open circuit.
•
Read freeze frame data using an intelligent tester. Freeze frame data record the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle
was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and
other data, from the time the malfunction occurred.
(a) Connect an intelligent tester to the DLC3.
(b) Turn the ignition switch ON.
(c) Turn the tester ON.
(d) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DATA LIST / PRIMARY /
COOLANT TEMP.
(e) Read the value displayed on the tester.
Standard:
80
°C to 97°C (176°F to 207°F) with warm engine.
Result
HINT:
•
If there is an open circuit, the intelligent tester
indicates -40
°C (-40°F).
•
If there is a short circuit, the intelligent tester indicates
140
°C (284°F) or higher.
B
C
A
1
READ VALUE USING INTELLIGENT TESTER (ENGINE COOLANT TEMPERATURE)
Temperature Displayed
Proceed To
-40
°C (-40°F)
A
140
°C (284°F) or higher
B
80
°C to 97°C (176°F to 207°F)
C
Go to step 4
CHECK FOR INTERMITTENT PROBLEMS
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–117
ES
(a) Disconnect the B19 Engine Coolant Temperature (ECT)
sensor connector.
(b) Connect terminals 1 and 2 of the ECT sensor connector
on the wire harness side.
(c) Connect an intelligent tester to the DLC3.
(d) Turn the ignition switch ON.
(e) Turn the tester ON.
(f)
Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DATA LIST / PRIMARY /
COOLANT TEMP.
(g) Read the value displayed on the tester.
Standard:
140
°C (284°F) or higher
(h) Reconnect the ECT sensor connector.
OK
NG
(a) Disconnect the B19 ECT sensor connector.
(b) Connect terminals THW and E2 of the B1 ECM
connector.
HINT:
Before checking, do visual and contact pressure checks
on the ECM connector.
(c) Connect an intelligent tester to the DLC3.
(d) Turn the ignition switch ON.
(e) Turn the tester ON.
(f)
Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DATA LIST / PRIMARY /
COOLANT TEMP.
(g) Read the value displayed on the tester.
Standard:
140
°C (284°F) or higher
(h) Reconnect the ECT sensor connector.
OK
2
READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)
B19
ECT Sensor
Wire Harness Side:
B19
Front View
ECT Sensor Connector
ECM
THW
E2
A116164E02
CONFIRM GOOD CONNECTION TO
SENSOR. IF OK, REPLACE ENGINE
COOLANT TEMPERATURE SENSOR (See
page
)
3
READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN ECM)
B1
ECT Sensor
ECM Connector
ECM
THW
E2
THW E2
B19
A116162E06
REPAIR OR REPLACE HARNESS OR
CONNECTOR
ES–118
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
NG
(a) Disconnect the B19 ECT sensor connector.
(b) Connect an intelligent tester to the DLC3.
(c) Turn the ignition switch ON.
(d) Turn the tester ON.
(e) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DATA LIST / PRIMARY /
COOLANT TEMP.
(f)
Read the value displayed on the tester.
Standard:
-40
°C (-40°F)
(g) Reconnect the ECT sensor connector.
OK
NG
(a) Disconnect the B1 ECM connector.
(b) Connect an intelligent tester to the DLC3.
(c) Turn the ignition switch ON.
(d) Turn the tester ON.
(e) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DATA LIST / PRIMARY /
COOLANT TEMP.
(f)
Read the value displayed on the tester.
Standard:
-40
°C (-40°F)
(g) Reconnect the ECM connector.
OK
NG
CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM (See page
)
4
READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)
ECT Sensor
ECM
THW
E2
B19
A084869E57
REPLACE ENGINE COOLANT
TEMPERATURE SENSOR (See page
5
READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN ECM)
B1
ECM
ECM Connector
B19
ECT Sensor
THW
E2
A116163E04
REPAIR OR REPLACE HARNESS OR
CONNECTOR
REPLACE ECM (See page
)
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