DTC Troubleshooting: P15B8 (30)
  1. Check for continuity between ECM connector terminal A41 and TCM connector A (37P) terminal No. 10.
Is there continuity?
YES -
Go to Step 21 .
NO -
Repair open in the wire between the ECM (A41) and the TCM, then go to Step 13 .
  1. Turn the ignition switch OFF.
  1. Reconnect all connectors and the battery.
  1. Turn the ignition switch ON (II).
  1. Reset the ECM with the HDS.
  1. Do the ECM idle learn procedure.
  1. Turn the ignition switch OFF.
  1. Turn the ignition switch ON (II), and wait for 5 seconds.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P15B8 indicated?
YES -
Check for poor connections or loose terminals at the TCM and the ECM, then go to Step 1 .
NO -
Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■
  1. Reconnect all connectors.
  1. Update the ECM if it does not have the latest software, or substitute a known-good ECM.
  1. Turn the ignition switch OFF.
  1. Turn the ignition switch ON (II), and wait for 5 seconds.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P15B8 indicated?
YES -
Check for poor connections or loose terminals at the TCM and the ECM. If the ECM was updated, substitute a known-good ECM, then recheck. If the ECM was substituted, go to Step 1 .
NO -
If the ECM was updated, troubleshooting is complete. If the ECM was substituted, replace the original ECM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.■