1. Measure voltage between injector 2P connector terminals No. 1 and body ground (see table).

PROBLEM CYLINDER | DTC | INJECTOR TERMINAL NAME | ECM TERMINAL No. (CONNECTOR) | WIRE COLOR
--- | --- | --- | --- | ---
No. 1 | P1041 P2146 | INJ1− | 74 (No. 1) | BRN
No. 2 | P1042 P2149 | INJ2− | 49 (No. 1) | RED
No. 3 | P1043 P2149 | INJ3− | 73 (No. 1) | BLU
No. 4 | P1044 P2146 | INJ4− | 56 (No. 1) | YEL

Is there battery voltage?

YES | - | Repair short to power in the wire between the injector and the ECM, then go to Step 16 .
NO | - | Go to Step 21 .

1. Replace the problem injector.

1. Reconnect all connectors.

1. Turn the ignition switch ON (II).

1. Reset the ECM with the HDS.

1. Do the INJECTOR TEST in the INSPECTION MENU with the HDS.

1. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES | - | If DTC P1041, P1042, P1043, P1044, P2146 and/or P2149 are indicated, check for poor connections or loose terminals at the injector and the ECM, then go to Step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO | - | Troubleshooting is complete.■

1. Update the ECM if it does not have the latest software, or substitute a known-good ECM.

1. Do the INJECTOR TEST in the INSPECTION MENU with the HDS.

1. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES | - | If DTC P1041, P1042, P1043, P1044, P2146 and/or P2149 are indicated, check for poor connections or loose terminals at the injector and the ECM, then go to Step 1 . If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO | - | If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. ■