HA11 - Isolate Faulty Injector Circuit

- Key "OFF".

- Breakout box installed, Powertrain Control Module (PCM) disconnected.

- Disconnect all injectors on suspect bank.

- Digital Volt/Ohm Meter (DVOM) on 200 ohm scale.

- Connect one injector and measure resistance between test pin 37 and either test pin 58 or 59, as appropriate.

- Disconnect that injector and repeat process for each of the remaining injectors.

- Refer to Injector Resistance Specification Table 2. Table 2 - Single Injector Resistance

- Is each resistance within specification for the appropriate engine?

Yes -- Go to HA12. HA12 - Check Injector Driver Signal

No -- Replace injector. Remove breakout box. Reconnect PCM and injectors. Drive vehicle 5 miles/55 mph. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)