Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 49
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–151
ES
NEXT
(a) Connect an intelligent tester to the DLC3.
(b) Turn the ignition switch ON and turn the tester ON.
(c) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DTC INFO / CURRENT CODES.
(d) Read DTCs.
Result
B
A
Replace the heated oxygen sensor (See page
NEXT
NEXT
(a) Connect an intelligent tester to the DLC3.
(b) Turn the ignition switch ON and turn the tester ON.
(c) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DTC INFO / CURRENT CODES.
(d) Read DTCs.
Result
B
A
8
PERFORM CONFIRMATION DRIVING PATTERN
9
CHECK WHETHER DTC OUTPUT RECURS (DTC P0136 OR P0156)
Display (DTC Output)
Proceed To
P0136 or P0156
A
No output
B
CHECK FOR INTERMITTENT PROBLEMS
10
REPLACE HEATED OXYGEN SENSOR
11
PERFORM CONFIRMATION DRIVING PATTERN
12
CHECK WHETHER DTC OUTPUT RECURS (DTC P0136 OR P0156)
Display (DTC Output)
Proceed To
P0136 or P0156
A
No output
B
REPAIR COMPLETED
ES–152
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Connect an intelligent tester to the DLC3.
(b) Start the engine and turn the tester ON.
(c) Warm up the engine.
(d) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / ACTIVE TEST / INJ VOL.
(e) Change the fuel injection volume using the tester,
monitoring the voltage output of Air-Fuel Ratio (A/F) and
HO2 sensors displayed on the tester.
HINT:
•
Change the fuel injection volume within the range of -
12 % and +12 %. The injection volume can be
changed in 1 % graduations within the range.
•
The A/F sensor is displayed as AFS B1S1 or AFS
B2S1, and the HO2 sensor is displayed as O2S B1S2
or O2S B2S2, on intelligent testers.
Result
HINT:
A normal HO2 sensor voltage (O2S B1S2 or O2S B2S2)
reacts in accordance with increases and decreases in
fuel injection volumes. When the A/F sensor voltage
remains at either less or more than 3.3 V despite the
HO2 sensor indicating a normal reaction, the A/F sensor
is malfunctioning.
13
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (INJECTION VOLUME)
Tester Display (Sensor)
Voltage Variations
Proceed To
AFS B1S1 (A/F)
AFS B2S1 (A/F)
Alternates between more and less than 3.3 V
OK
AFS B1S1 (A/F)
AFS B2S1 (A/F)
Remains at more than 3.3 V
NG
AFS B1S1 (A/F)
AFS B2S1 (A/F)
Remains at less than 3.3 V
NG
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–153
ES
NG
OK
OK:
No gas leakage.
NG
OK
3.3 V
+12 %
-12 %
1 V
0 V
Malfunction
Malfunction
Injection Volume
HO2 Sensor Output
A/F Sensor
Output
Normal
A121606E01
REPLACE AIR FUEL RATIO SENSOR (See
page
CHECK AND REPAIR EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO (INJECTOR, FUEL
PRESSURE, GAS LEAKAGE FROM EXHAUST SYSTEM, ETC.)
14
CHECK EXHAUST GAS LEAKAGE
REPAIR OR REPLACE EXHAUST GAS
LEAKAGE POINT
ES–154
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Disconnect the B34 or B36 HO2 sensor connector.
(b) Measure the resistance between the terminals of the
HO2 sensor connector.
Standard Resistance
(c) Reconnect the HO2 sensor connector.
NG
OK
(a) Remove the EFI relay from the engine room R/B.
(b) Check the EFI relay resistance.
Standard Resistance
(c) Reinstall the EFI relay.
NG
OK
15
INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE)
Component Side:
HO2 Sensor
+B
HT1B or HT2B
B36
1
2
3
4
Bank 2
Bank 1
E2
B34
Front View
A062378E39
Tester Connections
Specified Conditions
HT1B or HT2B (1) - +B (2)
11 to 16
Ω at 20°C (68°F)
HT1B or HT2B (1) - E2 (4)
10 k
Ω or higher
REPLACE HEATED OXYGEN SENSOR (See
page
)
16
INSPECT EFI RELAY
B016200E02
Terminal
Connections
Specified Conditions
3 - 5
10 k
Ω or higher
Below 1
Ω
(when battery voltage applied to terminals 1 and 2)
REPLACE EFI RELAY
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст