DTC 12

Starter Switch Schematic:

A faulty starter switch will set code 12 in the on-board diagnostic system. Refer to the schematic diagram and test the sensor with the diagnostic chart.

Wire color code identification:

L: Blue
B: Black
Y: Yellow
G: Green
R: Red
W: White
Br: Brown
Lg: Light green
Gr: Gray

Starter Switch Diagnostic Chart:

STARTER SWITCH DIAGNOSTIC CHART

ECU Connectors:

CHECK VOLTAGE AND RESISTANCE

1. With ignition "OFF,", disconnect ECU connector.
2. Measure voltage between ECU connector (F120)17 and ground while cranking engine. Voltage should be above 8V.
3. With ignition "OFF," measure resistance between ECU connectors and ground as follows:

Connector & terminal: Resistance:
(F119)1-Ground Below 10 Ohms
(F120)10-Ground Below 10 Ohms