Inspection Procedure

PREPARATION: 

Disconnect the pattern select switch connector.

CHECK: 

Check continuity between terminals 3 and 5 of pattern select switch connector when the select switch is set to PWR and NORM positions.

OK: 

Fig 1: Checking Pattern Select Switch (PWR Mode Switch)

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1. NG : Replace the pattern select switch. 
2. OK : Go to next step 

PREPARATION: 

1. Connect the pattern select switch connector.
2. Turn the ignition switch ON.

CHECK: 

Measure voltage between terminal PWR of ECM and body ground when the pattern select switch is set to the PWR (POWER) position and NORM (NORMAL) position.

OK: 

HINT:

The ECM uses the normal pattern signal if the PWR signal is not input.

Fig 2: Checking Pattern Sel SW Signal

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1. OK : Proceed to next circuit inspection shown on matrix chart (See  PROBLEM SYMPTOMS TABLE  ). 
2. NG : Repair or replace harness or connector (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ).