FixVault

Flash Code Diagnostics

WARNING: This page is about a different car, the 2001 Isuzu Trooper. However, it is still accessible from the selected car via links, so may be relevant.

Flash code diagnostics can be used to read active codes and to determine if history codes are present. Flash code diagnostics cannot be used to clear codes or read history codes. Flash code diagnostics are enabled by grounding terminal No. 4 of Data Link Connector (DLC) connector with ignition on. See Fig 1. SDM displays trouble codes by flashing warning light. Each code displayed consists of a number of flashes which represent tens digit, followed by a 1.2 second pause, followed by a number of flashes which represent ones digit of code. See DIAGNOSTIC TROUBLE CODES (DTCS)  table. After all codes have been displayed, entire code sequence will continually repeat until ground is disconnected from terminal No. 4 of DLC connector.

Flash code 12 will always be first code displayed. It is not an indication of a problem but an indication that flash code mode has been enabled. If there are no active or history codes present, code 12 will be displayed until ground is disconnected from DLC connector terminal No. 4.

Flash code 13 will be displayed if history codes are present. Scan tool is required to read history codes.

DIAGNOSTIC TROUBLE CODES (DTCS)

Trouble Code Possible Cause
15  Passenger deployment loop resistance high
16  Passenger deployment loop resistance low
17  Passenger deployment loop open
18  Passenger deployment loop short to ground
19  Passenger deployment loop short to voltage
21  Driver deployment loop resistance high
22  Driver deployment loop resistance low
24  Driver deployment loop short to ground
25  Driver deployment loop short to voltage
26  Driver deployment loop open
51  Deployment event commanded
53  Deployment commanded with deployment loop fault or energy reserves out of range
61  Warning light circuit failure
71  Internal SDM fault
Fig 1: SRS Connector & Terminal Identification
G98A08100Courtesy of ISUZU MOTOR CO.