Toyota FJ Cruiser (GSJ 10, 15 series). Instruction — part 82
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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DESCRIPTION
This vehicle is equipped with a voltage inverter, which supplies power to various electrical appliances.
When the main switch of the voltage inverter is turned ON, the inverter relay turns ON, and the inverter
then converts the 12 V Direct Current (DC) of the battery into an 115 V Alternating Current (AC). The
voltage inverter can output a maximum of 400 W from an outlet.
When the AC 115 V is output, a load is applied to the engine. The ECM controls the engine idling speed
according to the vehicle speed and engine load. A speed signal is input to the inverter and an idle-up
signal is transmitted to the ECM.
MONITOR DESCRIPTION
While the engine is idling, the ECM performs idle-up according to the power supply of the inverter to
stabilize the engine idling speed.
DTC
P1500
AC Inverter Malfunction
DTC No.
DTC Detection Conditions
Trouble Areas
P1500
While vehicle running, idle-up signal input to ECM for 10
seconds
(2 trip detection logic)
•
Open or short in speed signal circuit
•
Short between idle-up signal and +B circuits
•
Voltage inverter
•
ECM
Battery
AC 115 V
A/C 115 V
Power Outlet
Socket
From:
Park/ Neutral Position Switch
(For Automatic Transmission)
STA Fuse
(For Manual Transmission)
Ignition
Switch
Main Switch
Voltage Inverter
Combination Meter
ECM
SPD
ELS2
Speed
Signal
Idle-up Signal
SPD
EXCD
+B
A133425E01
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1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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When the vehicle is stationary and the inverter input exceeds 8.3 A, the inverter sends an idle-up signal
from the EXCD terminal of the inverter to the ELS2 terminal of the ECM.
If the idle-up signal is input into the ECM for 10 seconds while the vehicle is running, the ECM interprets
this as a malfunction in the inverter circuit and sets the DTC.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
WIRING DIAGRAM
Related DTCs
P1500: Voltage inverter performance
Required Sensors/Components (Main)
Voltage inverter
Required Sensors/Components (Related)
-
Frequency of Operation
Continuous
Duration
10 seconds
MIL Operation
2 driving cycles
Sequence of Operation
None
Monitor runs whenever following DTCs not present
None
Vehicle speed
3.11 mph (5 km/h) or more
Battery voltage
8 V or more
Ignition switch
ON
Starter
OFF
Electric load signal 2
ON
E13
Combination Meter
K6
Voltage Inverter
+S
SPD
ELS2
SPD
ECM
EXCD
14
9
2
12
E46
8
E46
A133426E01
1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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INSPECTION PROCEDURE
(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
HINT:
If any DTCs other than P1500 are output, troubleshoot
those DTCs first.
NG
OK
(a) Shift the transmission gear selector lever to the neutral
position.
(b) Jack up the vehicle.
(c) Turn the ignition switch ON.
(d) Check the voltage between the terminals of the ECM
connectors as the wheel is turned slowly.
Standard Voltage
HINT:
The output voltage should fluctuate up and down
similarly to the diagram on the left when the wheel is
turned slowly.
NG
OK
1
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P1500)
Display (DTC Output)
Proceed To
P1500
A
P1500 and other DTCs
B
GO TO DTC CHART (See page
)
2
INSPECT VOLTAGE INVERTER ASSEMBLY (SPD SIGNAL)
ECM Connector
B3
E46
E1 (-)
SPD (+)
12 V
0 V
Turn Wheel
A116298E02
Tester Connections
Specified Conditions
SPD (E46-8) - E1 (B3-1)
Voltage generated intermittently
REPAIR OR REPLACE HARNESS OR
CONNECTOR
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1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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(a) Disconnect the K6 inverter connector.
(b) Start the engine.
(c) Measure the voltage between the OUT terminal of
inverter and the body ground.
Standard Voltage
(d) Reconnect the inverter connector.
OK
NG
(a) Disconnect the K6 inverter connector.
(b) Disconnect the E46 ECM connector.
(c) Turn the ignition switch ON.
(d) Measure the voltage between the terminals of the wire
harness side connectors and body ground.
Standard Voltage (Check for short in idling up signal
circuit)
(e) Reconnect the inverter connector and the ECM
connector.
NG
OK
3
INSPECT ECM
Voltage Inverter Assembly
EXCD
K6
G035001E04
Tester Connections
Specified Conditions
EXCD (K6-9) - Body ground
1 V or less
REPLACE VOLTAGE INVERTER ASSEMBLY
(See page
4
CHECK HARNESS AND CONNECTOR (ECM - INVERTER, INVERTER - POWER SOURCE)
E46
ECM Connector
K6
ELS2
EXCD
Voltage Inverter Assembly
A116301E03
Tester Connections
Specified Conditions
EXCD (K6-9) - Body ground
1 V or less
ELS2 (E46-12) - Body ground
REPAIR OR REPLACE HARNESS OR
CONNECTOR
REPLACE ECM (See page
)
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