Isuzu 1999 RODEO Workshop Manual page 782

DTC P0134 – O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
Step
8 1. Ignition OFF.
2. With the PCM disconnected, check continuity of the
Bank 1 HO2S 1 low circuit.
3. If the Bank 1 HO2S 1 low circuit measures over 5 W,
repair open or poor connection as necessary.
Was a Bank 1 HO2S 1 low circuit problem found and
corrected?
9 1. Ignition ON, engine OFF.
2. Disconnect Bank 1 HO2S 1 and jumper the HO2S
high and low circuits (PCM side) to ground.
3. Using a Tech 2, monitor Bank 1 HO2S 1 voltage.
Is Bank 1 HO2S 1 voltage approximately equal to the
specified value?
10 Replace Bank 1 HO2S 1.
Is the action complete?
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 action complete?
RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
(Cont'd)
Action
replacement PCM must
Module and Sensors
Value(s)
— Verify repair
Go to Step 10
10 mV
— Verify repair
be
for
— Verify repair
6E1–155
Yes No
Go to Step 9
Go to Step 11
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