Toyota Tundra (2015 year). Manual — part 1884
OK
(b) Disconnect the D74 ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
D33-1 (HA1A) - D74-22 (HA1A)
Always
Below 1 Ω
D34-1 (HA2A) - D74-20 (HA2A)
Always
Below 1 Ω
D33-1 (HA1A) or D74-22 (HA1A) - Body ground
Always
10 kΩ or higher
D34-1 (HA2A) or D74-20 (HA2A) - Body ground
Always
10 kΩ or higher
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
6.
CHECK WHETHER DTC OUTPUT RECURS
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear DTCs
.
(e) Start the engine.
(f) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving
Pattern.
(g) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
(h) Read the output pending DTCs.
Result
RESULT
PROCEED TO
No DTC is output
A
P0031, P0032, P0051, P0052, P101D or P103D is output
B
B
REPLACE ECM
A
CHECK FOR INTERMITTENT PROBLEMS
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0031,P0032...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000000PFA0X5X
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM:
P0037,P0038,P0057,P0058,P0141,P0161,P102D,P105D; Oxygen Sensor Heater Control Circuit Low (Bank 1
Sensor 2); 2015 MY Tundra [08/2014 - ]
DTC
P0037
Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2)
DTC
P0038
Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2)
DTC
P0057
Oxygen Sensor Heater Control Circuit Low (Bank 2 Sensor 2)
DTC
P0058
Oxygen Sensor Heater Control Circuit High (Bank 2 Sensor 2)
DTC
P0141
Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
DTC
P0161
Oxygen Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
DTC
P102D
O2 Sensor Heater Circuit Performance Bank 1 Sensor 2 Stuck ON
DTC
P105D
O2 Sensor Heater Circuit Performance Bank 2 Sensor 2 Stuck ON
DESCRIPTION
Refer to DTC P0136
.
HINT:
DTC
NO.
DTC DETECTION CONDITION
TROUBLE AREA
P0037
P0057
The heater current is less than the specified value while
the heater is operating.
(1 trip detection logic)
Open in HO2 sensor heater
circuit
HO2 sensor heater (for
Sensor 2)
Integration relay
ECM
P0038
P0058
The heater current is higher than the specified value
while the heater is operating.
(1 trip detection logic)
Short in HO2 sensor heater
circuit
HO2 sensor heater (for
Sensor 2)
Integration relay
ECM
P0141
P0161
The cumulative heater resistance correction value
exceeds the threshold.
(2 trip detection logic)
Open or short in HO2 sensor
heater circuit
HO2 sensor heater (for
Sensor 2)
Integration relay
ECM
P102D
P105D
The heater current is higher than the specified value
while the heater is not operating.
(1 trip detection logic)
ECM
MONITOR DESCRIPTION
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0037,P0038...
Heated oxygen sensor heater range check (P0037, P0038, P0057,
P0058, P102D and P105D):
The ECM monitors the current applied to the O2 sensor heater to check the heater for malfunctions. If the
current is below the threshold value, the ECM determines that there is an open circuit in the heater. If the
current is above the threshold value, the ECM determines that there is a short circuit in the heater.
The ECM constantly monitors the current applied to the heater. If the ECM detects an open or short circuit, the
ECM turns the MIL on and sets a DTC.
If a malfunction is detected, the ECM cuts off the current applied to the heater.
Heated oxygen sensor heater performance (P0141 and P0161):
After the accumulated heater ON time exceeds 100 seconds, the ECM calculates the heater resistance using
the battery voltage and the current applied to the heater.
If the resistance is above the threshold value, the ECM determines that there is a malfunction in the HO2
sensor heater and sets DTC P0141 or P0161.
MONITOR STRATEGY
Related DTCs
P0037: Heated oxygen sensor heater (for Bank 1) range check (Low
electrical current)
P0038: Heated oxygen sensor heater (for Bank 1) range check (High
electrical current)
P0057: Heated oxygen sensor heater (for Bank 2) range check (Low
electrical current)
P0058: Heated oxygen sensor heater (for Bank 2) range check (High
electrical current)
P0141: Heated oxygen sensor heater performance (for Bank 1)
P0161: Heated oxygen sensor heater performance (for Bank 2)
P102D: Heated oxygen sensor heater stuck ON (for Bank 1 Sensor 2)
P105D: Heated oxygen sensor heater stuck ON (for Bank 2 Sensor 2)
Required Sensors/Components
(Main)
Heated oxygen sensor heater
Required Sensors/Components
(Related)
-
Once per driving cycle: P0141 and P0161
Duration
0.5 seconds: P0037, P0057, P102D and P105D
Within 3 seconds: P0038 and P0058
10 seconds: P0141 and P0161
MIL Operation
Immediate: P0037, P0038, P0057, P0058, P102D and P105D
2 driving cycles: P0141 and P0161
TYPICAL ENABLING CONDITIONS
P0037 and P0057 (Case 1)
Monitor runs whenever following DTCs not stored
None
3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0037,P0038...
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