How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2006 Scion tC. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Using the procedure to troubleshoot the engine immobilizer system.
*: Use the intelligent tester.

VEHICLE BROUGHT TO WORKSHOP
NEXT
INSPECT BATTERY VOLTAGE
Standard voltage: 11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

NEXT
CRANK ENGINE FOR MORE THAN 10 SECONDS
NEXT

CHECK FOR DTC*

Check for DTCs and note any codes that are output (see DIAGNOSTIC TROUBLE CODE CHART ).
Delete the DTC.

Recheck for DTCs. Based on the DTC output above, try to force output of the same SFI system DTC or engine immobilizer system DTC by simulating the operation indicated by the DTC.

Result:

RESULT

Result	Proceed to
DTC output does not reoccur	A
SFI system DTC output reoccurs	B
Engine immobilizer system DTC output reoccurs	C

B: Go to SFI SYSTEM

C: Go to step 7

PROBLEM SYMPTOMS TABLE

Result:

RESULT

Result	Proceed to
Fault is not listed on problem symptoms table	A
Fault is listed on problem symptoms table	B

B: Go to step 7

OVERALL ANALYSIS AND TROUBLESHOOTING*
NEXT
ADJUST, REPAIR AND REPLACE
NEXT
CONFIRMATION TEST

END