Toyota Tundra 2005 Service - Repair - Maintenance page 421

DI−154
6 Check whether DTC output recurs (DTC P0138, P0158)
CHECK:
(a) On the hand−held tester, select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC
INFO / CURRENT CODES.
(b) Read DTCs.
RESULT:
A
Replace heated oxygen sensor.
7 Check output voltage of heated oxygen sensor.
PREPARATION:
(a) Connect the hand−held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the tester ON.
(c) Start the engine.
(d) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / O2S B1S2.
(e) After warming up the engine, run the engine at an engine speed of 2,500 rpm for 3 minutes.
CHECK:
Read the output voltage of the HO2 sensor when the engine rpm is suddenly increased.
HINT:
Quickly accelerate the engine to 4,000 rpm 3 times using the accelerator pedal.
Standard: Fluctuates between 0.4 V or less and 0.5 V or more.
OK
8 Perform confirmation driving pattern.
NEXT
DIAGNOSTICS
Display (DTC Output)
P0138 or P0158
No output
− ENGINE (1GR−FE)
B Check for intermittent problems
(See page DI−11).
NG Go to step 14.
Proceed To
A
B