Diagnostic Aids

WARNING: This page is about a different car, the 2005 Suzuki Reno and 2005 Suzuki Forenza. However, it is still accessible from the selected car via links, so may be relevant.

It is very important to perform a thorough inspection of the wiring and the connectors. Failure to inspect the wiring and the connectors carefully and completely may result in misdiagnosis, causing part replacement with the reappearance of the malfunction.

DIAGNOSTIC INFORMATION AND PROCEDURES

Step	Action	Value(s)	Yes	No
1	Use the scan tool to determine if any other DTCs are set. Are other DTCs set?	-	Go to the tables for the other DTCs	Go to Step 2
2	Clear all DTCs and road test the vehicle. Does DTC C0550 set again?	-	Go to Step 4	Go to Step 3
3	Check all wiring harness connectors and terminals, especially those at the EBCM, for any condition that could cause an intermittent. Repair any problems found. Is the repair complete?	-	System OK	-
4	Turn the ignition switch to OFF. Disconnect EBCM connector J1. Turn the ignition switch to ON. Measure the voltage between ground and terminals 15, 17, and 18 of the EBCM harness connector J1. Is the voltage equal to the specified value?	11-14V	Go to Step 6	Go to Step 5
5	Check the voltage supply and the ground connections to the EBCM. Repair any open or high resistance found. Is the repair complete?	-	System OK	-
6	Check the EBCM connector J1 for any ineffective terminals. Are there any problems?	-	Go to Step 7	Go to Step 8
7	Repair any connector problem found. Is the repair complete?	-	System OK	-
8	Clear all DTCs and road test the vehicle. Does DTC C0550 set again?	-	Go to Step 9	System OK
9	Replace the EBCM unit. Is the repair complete?	-	System OK	-