DTC 1003

When the gear position is "P" (A/T models only) or "N", park/ neutral position switch is "ON".
ECM detects the park/neutral position when continuity with ground exists.




CONSULT REFERENCE VALUE IN DATA MONITOR MODE




ECM TERMINALS AND REFERENCE VALUE
Specification data are reference values and are measured between each terminal and (43) (ECCS ground).




ON BOARD DIAGNOSIS LOGIC


OVERALL FUNCTION CHECK
Use this procedure to check the overall function of the park/ neutral position switch circuit. During this check, a DTC might not be confirmed.

With Consult
(1) Turn ignition switch "ON".




(2) Perform "PARK/NEUT POSI SW CKT" in "FUNCTION TEST" mode with CONSULT

OR

With Consult
(2) Select "P/N POSI SW" in "DATA MONITOR" mode with CONSULT.




(3) Check the "P/N POSI SW" signal under the following conditions.

Condition (Gear position) / Signal
"P" (A/T only) and "N" position / ON
Except the above position / OFF

Without Consult
(1) Turn ignition switch "ON".




(2) Check voltage between ECM terminal (22) and body ground under the following conditions.

Condition (Gear position) / Voltage (V)
"P" (A/T only) and "N" position / Approx. 0
Except the above position M/T models: / Approx. 5
A/T models:/ Battery voltage




DIAGNOSTIC PROCEDURE