Ignition Key
The PASS-KEY® II
ignition key (1) is a square ignition key blank with an embedded resistor
pellet. The resistor pellet is not serviced separately. The PASS-KEY® II
has 15 different keys. Each key has a different resistance value.
The ignition key has mechanical cuts similar to non-PASS Key® II
ignition keys (1).
Ignition Lock Cylinder
The ignition lock cylinder
contains the resistor sensing contacts. These contacts are used to read the
resistor pellet on the ignition key.
Maintain the proper wire routing (1) when you service the ignition lock
cylinder. A two pin connector at the base of the steering column connects
the ignition lock cylinder pigtail connector to the vehicle wiring harness.
This connector is also used for diagnostic purposes.
Theft Deterrent Module
The theft deterrent module contains the logic of the PASS-Key® II.
The following are some of the theft deterrent module's inputs and outputs:
| | The ignition input turns on the theft deterrent module and reads the
resistor pellet for a valid code. |
| • | The key detection circuit input |
| | The key detection circuit input reads the resistor pellet code. |
| • | The start enable output |
| | The start enable output enables the theft deterrent relay, which enables
or disables the starter circuit. |
| • | The fuel enable signal output |
| | The fuel enable signal output sends a password to the Powertrain Control
Module (PCM) to either enable or disable fuel delivery to the engine. |
| • | The SECURITY indicator control output |
| | The SECURITY indicator control output causes the indicator to turn ON,
turn OFF, or flash. |
Theft Deterrent Relay
The theft deterrent module enables the theft deterrent relay by grounding
the start enable circuit. When the theft deterrent relay is ON, it completes
the circuit between the ignition switch and the starter. This allows the
engine to crank when the ignition switch is in the RUN position. The transaxle
must be in either PARK or NEUTRAL in order for this to happen.
When the theft deterrent relay is disabled, the circuit between the
ignition switch and the starter is opened. This prevents the engine from cranking
when the ignition switch is in the RUN position.
Powertrain Control Module (PCM)
The PCM interfaces with
the theft deterrent module. The PCM enables fuel delivery to the engine upon
when it receives the correct password from the theft deterrent module. The
password is sent through the fuel enable signal circuit.
The PCM contains Diagnostic Trouble Codes (DTCs) related to the fuel
enable signal circuit. Refer to Engine Controls.
