Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 38
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–107
ES
WIRING DIAGRAM
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 / INTAKE
AIR.
(e) Read the value displayed on the tester.
Standard:
Same as actual Intake Air Temperature (IAT).
Result
HINT:
•
If there is an open circuit, the intelligent tester
indicates -40
°C (-40°F).
1
READ VALUE USING INTELLIGENT TESTER (INTAKE AIR TEMPERATURE)
B13
Intake Air Temperature Sensor
(Built into Mass Air Flow Meter)
ECM
THA
E2
E2
THA
4
5
5 V
R
B1
B1
28
22
A133458E01
Temperature Displayed
Proceed To
-40
°C (-40°F)
A
140
°C (284°F) or higher
B
Same as actual IAT
C
ES–108
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
•
If there is a short circuit, the intelligent tester indicates
140
°C (284°F) or higher.
B
C
A
(a) Disconnect the B13 Mass Air Flow (MAF) meter
connector.
(b) Connect terminals THA and E2 of the MAF meter wire
harness side 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 / INTAKE
AIR.
(g) Read the value displayed on the tester.
Standard:
140
°C (284°F) or higher
(h) Reconnect the MAF meter connector.
OK
NG
Go to step 4
CHECK FOR INTERMITTENT PROBLEMS
2
READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN WIRE HARNESS)
B13
Wire Harness Side:
Front View
MAF Meter Connector
THA
E2
THA
E2
ECM
MAF Meter Connector
A116161E02
CONFIRM GOOD CONNECTION TO
SENSOR. IF OK, REPLACE MASS AIR FLOW
METER (See page
)
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–109
ES
(a) Disconnect the B13 MAF meter connector.
(b) Connect terminals THA 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 / INTAKE
AIR.
(g) Read the value displayed on the tester.
Standard:
140
°C (284°F) or higher.
(h) Reconnect the MAF meter connector.
OK
NG
(a) Disconnect the B13 MAF meter 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 / INTAKE
AIR.
(f)
Read the value displayed on the tester.
Standard:
-40
°C (-40°F)
(g) Reconnect the MAF meter connector.
OK
NG
3
READ VALUE USING INTELLIGENT TESTER (CHECK FOR OPEN IN ECM)
B1
MAF Meter Connector
ECM Connector
ECM
THA
E2
THA
E2
A116162E05
REPAIR OR REPLACE HARNESS OR
CONNECTOR
CONFIRM GOOD CONNECTION TO ECM. IF OK, REPLACE ECM (See page
4
READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT IN WIRE HARNESS)
MAF Meter Connector
ECM
E2
THA
A084869E16
REPLACE MASS AIR FLOW METER (See
page
)
ES–110
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(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 / INTAKE
AIR.
(f)
Read the value displayed on the tester.
Standard:
-40
°C (-40°F)
(g) Reconnect the ECM connector.
OK
NG
5
READ VALUE USING INTELLIGENT TESTER (CHECK FOR SHORT ECM)
B1
ECM
ECM Connector
MAF Meter Connector
THA
E2
A116163E03
REPAIR OR REPLACE HARNESS OR
CONNECTOR
REPLACE ECM (See page
)
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