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CHANGED BY EFFECTIVE DATE AFFECTED VIN 56 DIAGNOSIS ECU Limp Home Mode Immedi- ately Engine Stop Delayed Engine Stop Torque Reduction (max.50%) Torque Reduction (max.20%) New DTC P1650 AMF OBD Short to GND - Short to GND P1672 P1673 #4 Glow Plug Fault - Short #5 Glow Plug Fault - Short - The glow plug circuit is short. - Check the communication line between ECU and each glow plug. - Check each glow plug wiring harness. - Check the resistance of each glow plug: below 1 Ω - Check each glow plug relay. - Check the ECU wiring harness. - Replace the ECU if required. - The glow plug circuit is short. - Check the communication line between ECU and each glow plug. - Check each glow plug wiring harness. - Check the resistance of each glow plug: below 1 Ω - Check each glow plug relay. - Check the ECU wiring harness. - Replace the ECU if required. DTC Trouble Help P1636 Immobilizer Fault (refer - Severe trouble is not defined. - Perform the immobilizer coding again. - Check the ECU wiring harness. • Check the ECU pin #34 for open and short. - Check the immobilizer unit for open and short or check the supply voltage. - Check the immobilizer antenna and transponder for damage. - Replace the ECU if required. P1671 #3 Glow Plug Fault - Short - The glow plug circuit is short. - Check the communication line between ECU and each glow plug. - Check each glow plug wiring harness. - Check the resistance of each glow plug: below 1 Ω - Check each glow plug relay. - Check the ECU wiring harness. - Replace the ECU if required. P1657 Engine Mount Control - The wiring for engine mount level control is malfunctioning. - Standard level: - Operating condition: P1658 P1659 Engine Mount Control Engine Mount Control - The wiring for engine mount level control is short to battery. - ECU pin No. 23, relay control - Engine speed : Over 1,200 rpm (30 km/h for vehicle speed) - The wiring for engine mount level control is short to ground. - ECU pin No. 23, relay control - Engine speed : Over 1,200 rpm (30 km/h for vehicle speed) |