Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 34
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–91
ES
TYPICAL MALFUNCTION THRESHOLDS
P0037 and P0057:
P0038 and P0058:
P0141 and P0161 (Heater performance monitor check):
COMPONENT OPERATING RANGE
MONITOR RESULT
Refer to CHECKING MONITOR STATUS (See page
WIRING DIAGRAM
Refer to DTC P0136 (See page
INSPECTION PROCEDURE
HINT:
Read freeze frame data using an intelligent tester. The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data
can be helpful in determining whether the vehicle was running or stopped, whether the engine was
warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of
a malfunction.
(a) Disconnect the B36*1 or B34*2 Heated Oxygen (HO2)
sensor connectors.
HINT:
•
*1: Bank 1 Sensor 2
•
*2: Bank 2 Sensor 2
(b) Measure the resistance between the terminals of the
HO2 sensor connector.
Standard Resistance (Bank 1 Sensor 2)
Standard Resistance (Bank 2 Sensor 2)
(c) Reconnect the HO2 sensor connector.
Heater current
Less than 0.3 A
One of the following conditions is met:
Condition A or B
A. Learned heater OFF current
More than 2 A
B. Heater current
2 A or more
Accumulated heater resistance
Varies with sensor element temperature (Example: More than 23 ohm)
Heated Oxygen (HO2) sensor heater current
0.4 to 1 A (when engine idles, HO2 sensor warmed up and battery
voltage 11 to 14 V)
1
INSPECT HEATED OXYGEN SENSOR (HEATER RESISTANCE)
Component Side:
HO2 Sensor
Front View
B36
B34
*1
*2
+B
E2
HT1B
HT2B
OX1B
OX2B
*1: Bank 1
*2: Bank 2
*1
*2
*1
*2
A133485E01
Tester Connections
Specified Conditions
HT1B (1) - +B (2)
11 to 16
Ω at 20°C (68°F)
HT1B (1) - E2 (4)
10 k
Ω or higher
Tester Connections
Specified Conditions
HT2B (1) - +B (2)
11 to 16
Ω at 20°C (68°F)
HT2B (1) - E2 (4)
10 k
Ω or higher
ES–92
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
NG
OK
(a) Remove the EFI relay from the engine room relay block.
(b) Check the EFI relay resistance.
Standard Resistance
(c) Reinstall the EFI relay.
NG
OK
(a) Turn the ignition switch ON.
(b) Measure the voltage between the terminals of the ECM
connectors.
Standard Resistance
HINT:
•
The HT1B means the heated oxygen sensor bank 1
sensor 2.
•
The HT2B means the heated oxygen sensor bank 2
sensor 2.
OK
NG
REPLACE HEATED OXYGEN SENSOR (See
page
)
2
INSPECT EFI RELAY
1
2
5
3
EFI Relay
A133434E03
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
3
INSPECT ECM (HT1B OR HT2B VOLTAGE)
E1 (-)
HT1B (+)
ECM Connector
B2
B3
B1
HT2B (+)
A115970E21
Terminal Connections
Specified Conditions
HT1B (B1-1) - E1 (B3-1)
11 to 14 V
HT2B (B2-5) - E1 (B3-1)
REPLACE ECM (See page
)
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–93
ES
(a) Check the harness and connector between the HO2
sensor and EFI No. 2 fuse.
(1) Disconnect the B36*1 or B34*2 HO2 sensor
connector.
HINT:
•
*1: Bank 1 Sensor 2
•
*2: Bank 2 Sensor 2
(2) Remove the EFI No. 2 fuse from the engine room R/
B.
(3) Check the resistance.
Standard Resistance
Standard Resistance
(4) Reconnect the HO2 sensor connector.
(5) Reconnect the EFI No. 2 fuse.
NG
OK
4
CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - EFI NO. 2 FUSE)
Wire Harness Side:
HO2 Sensor Connector
Bank 1
Bank 2
+B
Front View
EFI No. 2
Engine Room R/B
B36
B34
1
2
A133484E01
Terminal Connections
Specified Conditions
+B (B36-2) - EFI No. 2 fuse (2)
Below 1
Ω
+B (B34-2) - EFI No. 2 fuse (2)
Terminal Connections
Specified Conditions
+B (B36-2) or EFI No. 2 fuse (2) - Body ground
10 k
Ω or higher
+B (B34-2) or EFI No. 2 fuse (2) - Body ground
REPAIR OR REPLACE HARNESS OR
CONNECTOR
ES–94
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Check the harness and connector between the ECM and
HO2 sensor.
(1) Disconnect the B36*1 or B34*2 HO2 sensor
connector.
HINT:
•
*1: Bank 1 Sensor 2
•
*2: Bank 2 Sensor 2
(2) Remove the B1 and B2 ECM connector.
(3) Check the resistance.
Standard Resistance
Standard Resistance
(4) Reconnect the HO2 sensor connector.
(5) Reconnect the ECM connector.
NG
OK
5
CHECK HARNESS AND CONNECTOR (HEATED OXYGEN SENSOR - ECM)
*1
*2
+B
HT1B *1
HT2B *2
*1: Bank 1
*2: Bank 2
Wire Harness Side:
HO2 Sensor Connector
ECM Connector
B1
B2
HT2B
HT1B
B36
B34
Front View
A133482E01
Terminal Connections
Specified Conditions
HT1B (B36-1) - HT1B (B1-1)
Below 1
Ω
HT2B (B34-1) - HT2B (B2-5)
Terminal Connections
Specified Conditions
HT1B (B36-1) or HT1B (B1-1) - Body ground
10 k
Ω or higher
HT2B (B34-1) or HT2B (B2-5) - Body ground
REPAIR OR REPLACE HARNESS OR
CONNECTOR
REPLACE ECM (See page
)
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