Isuzu 1999 RODEO Workshop Manual page 1533

6E2–290
RODEO 6VD1 3.2L ENGINE DRIVEABILITY AND EMISSIONS
f DTC P0352 can be cleared by using the Tech 2 "Clear
Info" function or by disconnecting the PCM battery
feed.
Diagnostic Aids
Check for the following conditions:
f Poor connection at PCM – Inspect the harness
connectors for backed-out terminals, improper mating,
broken locks, improperly formed or damaged
terminals, and poor terminal-to-wire connections.
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.
3. Operate the
conditions as noted.
4. Use a Tech 2 to monitor the "DTC" information for
DTC P0352 until the DTC P0352 test runs.
5. Note the test result.
Does the Tech 2 indicate DTC P0352 failed this ignition
cycle?
3 Check for faulty connection at ignition coil.
Was a problem found?
4 Check for faulty connection at PCM connector.
Was a problem found?
5 1. Ignition "ON," engine "OFF."
2. Back probe the ignition control circuit 2 at the PCM
with a DVM .
Is the voltage near the specified value?
6 1. Ignition "ON," engine running.
2. Back probe the ignition control circuit at the PCM for
the cylinder being tested.
Is the voltage in the specified range, rapidly toggling
back and forth to a reading 20-50 mV higher?
7 1. Ignition "OFF."
2. Disconnect the 3-pin connector at the ignition coil.
3. Check ignition control circuit 2 voltage at the ignition
coil connector while cranking the engine connector.
Does the voltage measure between the specified
values?
8 Replace the ignition coil.
Is the action complete?
9 1. Ignition "OFF."
2. Disconnect the PCM and the ignition coil.
3. Check ignition control circuit 2 for short to ground.
Was a problem found?
10 Check ignition control circuit 2 for short to voltage.
Was a problem found?
DTC P0352 – Ignition 2 Control Circuit
Action
vehicle within Failure
f Damaged harness – Inspect the wiring harness for
damage. If the harness appears to be OK, observe the
Tech 2 display related to DTC P0352 while moving the
connector and wiring related to the ignition system. A
change in the display will indicate the location of the
fault.
Reviewing the Failure Records vehicle mileage since the
diagnostic test last failed may help determine how often
the condition that caused the DTC to be set occurs. This
may assist in diagnosing the condition.
Value(s)
—
Record
—
—
—
25-55 mV
100-180 mV
200-1200 mV
—
—
—
Yes No
Go to OBD
System
Go to Step 2 Check
Go to
Diagnostic
Go to Step 3 Aids
Go to Step 4
Verify repair
Verify repair Go to Step 5
Go to Step 6 Go to Step 9
Go to Step 7 Go to Step 13
Go to Step 8 Go to Step 11
Verify repair —
Go to Step 10
Verify repair
Verify repair Go to Step 13