Isuzu 1999 RODEO Workshop Manual page 888

DTC P0443 EVAP Control System Purge Control Valve Circuit Malfunction
Step
1 Was the "On–Board Diagnostic (OBD) System Check"
performed?
2 1. Ignition ON, Engine OFF.
2. Review and record Tech 2 Failure Records data,
then clear the DTC's.
3. Operate the vehicle within the Failure Records
conditions as noted.
4. Using the Tech 2, monitor "DTC" info for DTC
P0443.
Does the Tech 2 indicate DTC P0443 "Ran and
Passed?"
3 1. Ignition OFF.
2. Disconnect the EVAP Canister Purge Solenoid from
the wiring harness connector from the EVAP
Canister Purge Solenoid.
3. Ignition ON, Engine OFF.
4. Using a Digital Voltmeter (DVM), check for voltage
on the "Engine IG." Fuse pin of the EVAP Canister
Purge Solenoid wiring harness connector.
Does the DVM read the following value?
4 Check the suspect circuit between the EVAP Canister
Purge Solenoid connector and the "Engine IG." Fuse
for the following conditions:
f
A short to ground
f
An open circuit
f
A short to voltage
Was the problem found?
5 Using a DVM, check the resistance of the EVAP
Canister Purge Solenoid.
Does the DVM read the following value?
6 1. Ignition OFF.
2. Disconnect the Powertrain Control Module (PCM)
connectors from the PCM.
3. Check the EVAP Canister Purge Solenoid control
circuit between the PCM and EVAP Canister Purge
Solenoid for the following conditions:
f
A short to ground
f
An open circuit
f
A short to voltage
Was the problem found?
RODEO X22SE 2.2L ENGINE DRIVEABILITY AND EMISSION
Action Value(s) Yes
— Go to Step 2
Refer to
Diagnostic
— Aids
12 Volts Go to Step 5
— Verify repair
less than 5 W
Go to Step 6
— Verify repair
6E1–261
No
Go to OBD
System
Check
Go to Step 3
Go to Step 4
—
Go to Step 7
Go to Step 8