DTC Troubleshooting: P0201 (71-5), P0202 (72-5), P0203 (73-5), P0204 (74-5)

DTC P0201:
 No. 1 Cylinder Injector Circuit Open
DTC P0202:
 No. 2 Cylinder Injector Circuit Open
DTC P0203:
 No. 3 Cylinder Injector Circuit Open
DTC P0204:
 No. 4 Cylinder Injector Circuit Open
  1. Turn the ignition switch ON (II).
  1. Clear the DTC 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.
Is DTC P0201, P0202, P0203 and/or P0204 indicated?
YES -
Go to Step 5 .
NO -
Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the injectors and the ECM.■
  1. Turn the ignition switch OFF, and wait 30 seconds.
  1. Disconnect the injector 2P connector from the problem cylinder.
  1. At the injector side, check for continuity between injector 2P connector terminals No. 1 and No. 2.
Is there continuity?
YES -
Go to Step 8 .
NO -
Go to Step 13 .
  1. Disconnect ECM connector No. 1 (96P).

  1. Connect the appropriate injector 2P connector terminal No. 2 to body ground with a jumper wire (see table).
PROBLEM CYLINDER
DTC
WIRE COLOR
No. 1
P0201
BLK
No. 2
P0202
WHT/RED
No. 3
P0203
RED/BLK
No. 4
P0204
GRN


  1. Check for continuity between body ground and the appropriate ECM connector terminal (see table).
PROBLEM CYLINDER
DTC
ECM TERMINAL No. (CONNECTOR)
WIRE COLOR
No. 1
P0201
25 (No. 1)
BLK
No. 2
P0202
2 (No. 1)
WHT/RED
No. 3
P0203
1 (No. 1)
RED/BLK
No. 4
P0204
26 (No. 1)
GRN

Is there continuity?
YES -
Go to Step 11 .
NO -
Repair open in the wire between the injector and the ECM, then go to Step 14 .

  1. Connect appropriate injector 2P connector terminal No. 1 to body ground with a jumper wire (see table).
PROBLEM CYLINDER
DTC
WIRE COLOR
No. 1
P0201
BRN
No. 2
P0202
RED
No. 3
P0203
BLU
No. 4
P0204
YEL


  1. Check for continuity between body ground and the appropriate ECM connector terminal (see table).
PROBLEM CYLINDER
DTC
ECM TERMINAL No. (CONNECTOR)
WIRE COLOR
No. 1
P0201
74 (No. 1)
BRN
No. 2
P0202
49 (No. 1)
RED
No. 3
P0203
73 (No. 1)
BLU
No. 4
P0204
50 (No. 1)
YEL

Is there continuity?
YES -
Go to Step 19 .
NO -
Repair open in the wire between the injector and the ECM, then go to Step 14 .
  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 P0201, P0202, P0203 and/or P0204 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. 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 P0201, P0202, P0203 and/or P0204 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.