Test CID - Cylinder Identification Sensor

Fig 1: Distributor Connector Terminals ID

NOTE: Enter this test only when Code 03 is displayed during self-test procedures (KOEO or KOER) or when directed here from another circuit test. This test is intended to diagnose CID circuit only.

NOTE: CID is incorporated with Crankshaft Position (CKP) sensor inside distributor.

CIRCUIT PIN IDENTIFICATION

Circuit	Breakout Box Pin No.	PCM Pin	Wire Color
CID	6	3G	Blue/Purple
GND	49	3C	Black/Red
VPWR	37 & 57	1B	Red/Black

1) Check System Integrity Visually check all wiring, connectors and components for evidence of damage, shorting or looseness. If a fault is found, repair as necessary. If no fault is found, go to next step.

2) Check CID Signal Turn ignition off. Install breakout box. Connect PCM to breakout box. Measure voltage at CID test pin at breakout box while bumping starter. If voltage fluctuates between zero and 5 volts, circuit is okay. If no other problem or code is found, replace PCM. If voltage does not fluctuate between zero and 5 volts, go to next step.

3) Check VPWR To Distributor Ensure ignition is off. Disconnect distributor connector. Turn ignition on. Measure voltage at VPWR wire at distributor connector. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, go to TEST VPWR. If VPWR circuit is okay, repair VPWR wire to distributor.

4) Check Distributor Ground Turn ignition off. Ensure distributor is disconnected. Measure resistance of GND wire between distributor connector and ground. If resistance is less than 5 ohms, go to next step. If resistance is more than 5 ohms, repair open GND wire.

5) Check For Open CID Wire Ensure ignition is off. With breakout box installed, disconnect PCM connectors. Measure resistance of CID wire between ground and CID test pin at breakout box. If resistance is more than 10,000 ohms, replace distributor. If resistance is 10,000 ohms or less, repair short to ground in CID wire.

6) Check For Short In CID Wire With breakout box installed and PCM connectors disconnected, measure resistance of CID wire between ground and CID test pin at breakout box. If resistance is more than 10,000 ohms, replace distributor. If resistance is 10,000 ohms or less, repair short to ground in CID wire.