Cylinder 1-Injector Circuit Excessive Current

Test 1:

Test 2 - Test 5:

Test 6 - Test 8:

SYMPTOM
P0201-CYLINDER 1-INJECTOR CIRCUIT EXCESSIVE CURRENT

WHEN MONITORED
With the engine running.

SET CONDITION
The ECM detects excessive current through the Cylinder #1 Injector driver when on.

POSSIBLE CAUSES
- Checking ECM power and grounds
- Checking the engine control relay system
- Engine control module
- Intermittent condition
- Fuel injector control circuit shorted to voltage
- Fuel injector control circuit shorted to ground
- Fuel injector circuits shorted together
- Fuel injector control circuit open
- Fuel injector