Isuzu 1999 RODEO Workshop Manual page 952

DTC P1134 – O2 Sensor Transition Time Ratio (Bank 1 Sensor 1) (Cont'd)
Step
6 1. With Bank 1 HO2S 1 disconnected, jumper the high
and low (PCM side) signal circuits to ground.
2. Ignition ON.
3. Using a Tech 2, monitor the Bank 1 HO2S 1 voltage.
Does the Tech 2 indicate less than 10 mV and
immediately return to about 450 mV when the jumper is
removed?
7 Repair condition as necessary.
Is the action complete?
8 Check for faulty PCM connections or terminal damage.
Is the action complete?
9 Repair open, short or grounded signal circuit.
Is the action complete?
10 Remove the Bank 1 H02S 1 and examine it for signs of:
f
Fuel contamination;
f
Improper RTV sealant (white powdery coating on
sensor);
f
Engine oil/coolant consumption.
Were signs of contamination observed?
11 Replace the PCM.
IMPORTANT: The
programmed. Refer to On–Vehicle Service in
Powertrain Control
procedures.
And also refer to latest Service Bulletin.
Check to see if the Latest software is released or not.
And then Down Load the LATEST PROGRAMMED
SOFTWARE to the replacement PCM.
Is the repair complete?
12 Replace the Bank 1 H02S 1.
Is the action complete?
RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
Action
replacement PCM must
Module and Sensors
Value(s)
Go to Step
—
— Verify repair
— Verify repair
— Verify repair
Go to Step
—
be
for
— Verify repair
— Verify repair
6E1–325
Yes No
Go to Step
10 11
—
Go to Step 9
Go to Step 6
Go to Step
13 12
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