Accessing Parameter Identification (PID) Information

Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to data link connector. Enter vehicle information on NGS tester. After all vehicle options are selected, press SAVE key. Select DIAGNOSTIC DATA LINK TEST, then select GEM - GENERIC ELECTRONIC MODULE on NGS tester. Enter appropriate vehicle options on NGS tester. Select PID/DATA MONITOR AND RECORD. Move cursor on NGS tester to desired PID and press TRIGGER key. To retrieve that PID information, press START key on NGS tester.

GENERIC ELECTRONIC MODULE (GEM) DTC IDENTIFICATION

DTC ⁽¹⁾

Description

Perform Test

B1322

Left Front Door Ajar Switch Circuit Short To Ground

⁽²⁾⁽³⁾ W

B1323

Door Ajar Light Circuit Failure

B1325

Door Ajar Light Circuit Short To Voltage

B1330

Right Front Door Ajar Circuit Short To Ground

⁽³⁾ W

B1426

Seat Belt Light Circuit Short To Voltage

B1428

Seat Belt Light Circuit Failure

B1462

Seat Belt Switch Circuit Failure

⁽³⁾ X

C1751

Vehicle Speed Sensor Output Short To Voltage

C1752

Vehicle Speed Sensor Output Short To Ground

P0500

Vehicle Speed Signal Circuit Failure

⁽⁴⁾ F

P1804

4WD High Indicator Circuit Failure

P1806

4WD High Indicator Circuit Short To Voltage

P1808

4WD Low Indicator Circuit Failure

P1810

4WD Low Indicator Circuit Short To Voltage

⁽¹⁾	Testing for DTCs not listed, see appropriate MODULE COMMUNICATIONS NETWORK article.

⁽²⁾	Test interior light wiring for opens and/or shorts and repair as necessary. See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS article.

⁽³⁾	Perform wiggle test. See WIGGLE TEST under SELF-DIAGNOSTIC SYSTEM in appropriate MODULE COMMUNICATIONS NETWORK article.

⁽⁴⁾	See appropriate WIPER/WASHER SYSTEMS article for additional testing procedures.

SYMPTOM CHART

Symptom	Go To Test
Fuel Gauge Inaccurate	A
Coolant Temperature Gauge Inaccurate	B
Oil Pressure Gauge Inaccurate	C
Speedometer Inaccurate	D
Speedometer/Odometer Inoperative (With 4-Wheel ABS)	E
Speedometer/Odometer Inoperative (With Rear ABS)	F
Tachometer Inoperative	G
Tachometer Inaccurate	H
Charge Indicator Always/Never On	J
Anti-Lock Brake Warning Light Inoperative	K
Fuel Reset Light Inoperative	L
High Beam Indicator Inoperative	M
Check Engine Light Inoperative	N
Turn Indicator Inoperative	P
Overdrive (O/D) Off Indicator Inoperative	Q
Cruise Control Indicator Never/Always On	R
Brake Warning Light Inoperative	S
Check Gauges Indicator Inoperative	T
No Communication With GEM	U
Air Bag Indicator Inoperative	V
Door Ajar Indicator Inoperative	W
Seat Belt Warning Indicator Inoperative	X
4WD High, 4WD Low Indicator Inoperative	Y