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in step 3, go to step 1. NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the DTC P2237: REAR A/F SENSOR (BANK 1, SENSOR 1) IP CIRCUIT HIGH VOLTAGE; DTC 1. Turn the ignition switch ON (II). 2. Clear the DTC with the HDS. 3. Start the engine. Hold the engine speed at 3,000 RPM without load (in Park or neutral) until the radiator fan comes on, then let it idle 2 minutes. 4. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2237 and/or P2240* indicated? YES - Go to step 5. NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals 5. Turn the ignition switch OFF. 6. Jump the SCS line with the HDS. 7. Disconnect the A/F sensor (Sensor 1) 8P connector. 8. Disconnect PCM connector B (24P). 9. Connect A/F sensor (Sensor 1) 8P connector terminal No. 7 to body ground with a jumper wire. Fig. 95: Connecting A/F Sensor (Sensor 1) 8P Connector Terminal No. 7 To Body Ground With NOTE: Before you troubleshoot, record all freeze data and any on-board Information marked with an asterisk (*) applies to the front bank (Bank
2007 Acura RL 2005-08 ENGINE PERFORMANCE PGM-FI System - RL
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